PP-R and PP-RCT fusion inspection: Aquatherm and PPI field guide

What is the inspection basis for PP-R and PP-RCT fusion?

Identify the product, service, approved procedure revision and release requirements before accepting a joint. PPI MS-8, revised April 2025, connects qualified operators, maintained equipment, ASTM F3722 procedures, manufacturer instructions, accessible inspection, testing and owner release. It is a model specification; its requirements become contractual when the project incorporates them. PPI MS-8

Keep product compliance, joining practice and operator qualification separate. MS-8 addresses ASTM F2389 or CSA B137.11 product compliance and applicable potable listings; F3722 governs PP fusion practice; F3190 addresses operator qualification. Record the editions adopted by the project before substituting a newer publication. PPI MS-8 ASTM F3722-24 public scope ASTM F3190-26 public scope

The adopted code, contract specification and manufacturer's installation instructions each have a defined role. Resolve conflicts in the approved procedure before production rather than selecting the greatest pressure or longest heating time from different documents. Aquatherm's June 2025 guide directs installation to its installer manual and bulletins and gives current online pressure-test instructions precedence. The permit and inspection guide covers jurisdictional coordination. Aquatherm Design & Planning Guide, June 2025 Aquatherm live catalog Aquatherm installer-manual landing page

Which applications and product restrictions must be cleared first?

Log product markings, polymer, metric OD, SDR, reinforcement, fluid, design temperature and operating pressure. Confirm approval of the actual pipe/fitting combination.

Aquatherm's June 2025 Design & Planning Guide states that its products installed in domestic hot-water recirculation systems after January 1, 2025 carry no manufacturer warranty. Clear that application restriction during selection, using the PPR, GI and copper comparison for the broader material decision. Aquatherm's December 9, 2024 compressed-gas bulletin also discontinues new North American compressed-gas applications; a general polypropylene application list does not authorize that service. Aquatherm Design & Planning Guide, June 2025 Aquatherm compressed-gas bulletin, December 2024

Which material and fusion method are you inspecting?

Match the process to the actual pipe and fitting, then select the corresponding record. PPI's polypropylene FAQ says PP-R and PP-RCT can be fused together; ASTM F3722-24 requires related chemistry and manufacturer approval of the procedure for the components being joined. PPI polypropylene FAQs ASTM F3722-24 public scope

Aquatherm's October 2024 manual prohibits fusion to PE, PVDF or CPVC and warns against mixing its engineered PP-R/PP-RCT with other polypropylene types. The pipe joining methods guide covers the wider joining decision, including PE fusion under F2620. PPI identifies different temperatures, pressures, forces and times for PP and PE; F2620 is not a replacement PP recipe. Aquatherm manual PPI polypropylene FAQs

Which records change for butt fusion and electrofusion?

Aquatherm's October 2024 Installer Manual specifies 410°F ±18°F for butt fusion; use the butt procedure rather than the socket settings below. Record OD, wall/SDR, machine model, facing, alignment, heater surface temperature, drag, gauge pressure and each heating, transfer, pressure-rise and cooling stage. Aquatherm manual

Aquatherm bulletin 202008A, issued August 2020, adopts evaluated DVS 2207-11:2017 changes for its MF pipe, including a 210°C ±10°C butt heater and maximum misalignment of 10% of wall thickness. Interfacial pressure acts at the pipe ends; machine gauge pressure depends on the machine and drag. Aquatherm butt-fusion bulletin 202008A, August 2020

For electrofusion, retain fitting part and lot, label/barcode, controller identity, preparation and peeling evidence, cycle output, alignment and cooling. Aquatherm's October 2024 manual lists its 32 mm coupling 1040032986 with 50 seconds heating and 10 minutes secured cooling and specifies 40.0 V for these fittings. Match the actual fitting label and controller; these are fitting-specific settings. Aquatherm manual

Manufacturer fusion-variable matrix

Aquatherm and Wavin use nominal 260°C socket heat, but their insertion depths, restraint and cooling instructions remain separate procedures. The selected rows below summarize Aquatherm's October 2024 manual and Wavin Ekoplastik's English January 2019 manual; the Wavin comparison is a dated regional procedure, not a North American product approval. Aquatherm manual Wavin manual

Anvilfield estimates the support durations from Aquatherm's 25% cooling rule. McElroy tooling retains the full cooling hold. Use the printed metric depth and the correct marking guide: nominal inch size identifies the product, not the insertion distance.

Aquatherm's 500°F ±18°F is equivalent to 260°C ±10°C. Wavin's EVO sheet separately recommends 260°C and the selected heating times; its 2024 catalog directs size-specific timing to the technical manual. Aquatherm manual Wavin manual Wavin EVO PP-RCT technical sheet Wavin Ekoplastik Catalogue, 2024

What changes in cold weather, extreme heat and larger sizes?

Aquatherm's October 2024 explanatory text assigns 40°F and colder to the cold column. Its ordinary warm range extends to 100°F; in extreme heat at 100°F and above, it permits slightly shorter heating while retaining at least 80% of the listed time. Its separate exception for 20/25 mm SDR 11 non-faser pipe reduces heat by one second to avoid wall collapse. Apply each exception only to its stated product and conditions. Aquatherm manual

Wavin's January 2019 procedure sets a +5°C minimum welding ambient. Do not extend its weather range using Aquatherm's cold column. Protect the work so rain, condensation and debris cannot reach the prepared fusion surfaces. Wavin manual Aquatherm manual

Aquatherm's June 2025 guide describes 2-inch and larger socket connections as difficult for one installer; Wavin's January 2019 manual recommends machine or jig welding from 50 mm. Arrange tooling, assistance and supports before heating to meet the transfer window. Aquatherm Design & Planning Guide, June 2025 Wavin manual

Tool calibration and temperature verification record

Verify the pipe-contact faces, not just the thermostat display. McElroy's January 2025 SW20902 Rev. B manual specifies a pyrometer at the socket faces and treats the heater-body thermometer as a reference. Instrument calibration establishes the measuring instrument's performance; the field check establishes the working surface temperature at that setup. McElroy manual

Aquatherm's October 2024 manual specifies checking inside the heads at 500°F ±18°F, corresponding to its 482 to 518°F troubleshooting range. It permits close-range infrared checking but directs use of a contact thermometer when uncertain; Wavin lists a contact thermometer. Aquatherm manual Wavin manual

Gauge resolution describes the display increment; accuracy describes closeness to the true pressure. Aquatherm's September 2024 procedure requires gauge accuracy within 0.5 psi, so a display advancing in 0.5 psi increments does not by itself establish compliance. Aquatherm test procedure

When do you check the tool again?

Use the event checks in the tool record and identify joints made since the last reliable check when a problem appears. Set calibration intervals from the equipment and project program; a field temperature check does not renew an instrument certificate.

McElroy's January 2025 manual requires 5 to 10 minutes stabilization after adjustment; Aquatherm's October 2024 manual gives 5 to 10 minutes initial warmup and warns about inadequate power supply. Verify after stabilization. Use sound nonstick faces and the correct metric PP heads. McElroy installs adapters with the heater cool, while Aquatherm describes tightening its heads after warming; follow the selected tool's approved assembly instructions. McElroy manual Aquatherm manual

How do you witness a socket fusion from cut to cool?

Observe preparation, full-depth heating, transfer, insertion and cooling as separate events. Square-cut and deburr the pipe, verify product and depth marking, clean and dry the fusion zones, and arrange support in the final alignment before heating. PPI MS-8, April 2025, calls for inspection of all components and joints while accessible. Anvilfield recommends the per-joint record below to connect that inspection to execution evidence. Aquatherm manual PPI MS-8

Aquatherm's October 2024 manual specifies an isopropyl alcohol-based cleaner of at least 91% by volume for dirt and oil. Inspect both cut surfaces for cracks and stress marks; where cutting has damaged the pipe, its removal instruction extends at least 6 inches beyond the damage. Finish with clean, dry fusion surfaces. Aquatherm manual

Wavin's January 2019 manual recommends checking ovality and scraping about 0.1 mm of oxidized surface over the insertion length for diameters 40 mm and larger. Its Stabi preparation removes the outer PP and middle aluminum layers over that length. Identify the precise construction first; Aquatherm socket preparation and electrofusion peeling are separate procedures, and reinforcement alone does not establish a universal scraping rule. Wavin manual Aquatherm manual

Start heating at full prescribed engagement, remove without twisting and complete insertion within the size-specific transition window. Aquatherm's general handling description does not extend the 32 mm row's 6-second maximum transfer. Aquatherm manual

How long must the joint stay supported and unloaded?

Aquatherm's October 2024 manual requires full support for at least 25% of the listed cooling time and full cooling before pressure testing or operation. For its 32 mm socket, Anvilfield converts that rule to at least 1 minute fully supported and 4 minutes total cooling. McElroy's January 2025 tooling instructions require holding firmly, or keeping jaws engaged, throughout specified cooling; schedule that full hold when using those tools. Aquatherm manual McElroy manual

Aquatherm prohibits twisting. Its separate maximum 3° intentional installed angle and warning against turning more than 2° during minor early correction address different checks; neither replaces the no-twist joining instruction. Record final alignment separately from observed movement. Permanent pipe supports then carry the assembly without forcing a cooling joint into position. Aquatherm manual

Inspect every accessible joint before concealment. Set process-witness hold points and any trial or destructive sample frequency in the approved inspection plan; MS-8 does not prescribe continuous third-party witnessing or this specific log.

Joint defect atlas: accept, hold or cut out

Accept appearance only alongside conforming execution and the required test. Aquatherm's October 2024 visual criteria are two continuous rings, a visible depth-mark edge and square alignment, with its stated 3° maximum intentional angle. Aquatherm manual Wavin manual McElroy manual

Does a gap always mean rejection?

Aquatherm's October 2024 manual permits consistent external ring separation on some assisted joints when prescribed insertion depth is achieved. External ring separation does not authorize interface voids. The same manual separately describes a slight internal gap from a slightly angled cut marked on its long side, without providing a universal dimensional allowance. Distinguish both from short insertion that reduces fusion length. Aquatherm manual

Wavin's January 2019 instructions preserve about 1 mm at the internal socket stop for material accumulation; its depth marks belong to its own procedure. McElroy requires no gaps or voids between fitting and pipe and removal of unacceptable joints. Wavin manual McElroy manual

McElroy's January 2025 manual directs cutting off an incompletely melted pipe end and using a new fitting; an unacceptable completed joint is cut out. Aquatherm's October 2024 manual prohibits solvent cement. Remake with sound pipe and a new fitting, preserve the rejected ID and link the replacement; reheating, glue and an added external bead are not the specified repair. McElroy manual Aquatherm manual

What can visual inspection, pressure tests and NDT establish?

Combine appearance, process evidence, qualification and testing. PPI TN-60, revised October 10, 2024, treats those checks as complementary: a visible bead does not reconstruct heating history. A pressure test documents behavior under its test conditions; it does not clear a restricted bore, an unauthorized application or a joint already known to violate the fusion procedure. PPI TN-60

For a trial or disputed joint, retain a labeled cut section when the approved investigation calls for one. Anvilfield recommends paired exterior and section photographs with the same joint ID, a scale, OD/SDR, operator and cut-plane label. Show the insertion end and bore restriction in the section view; keep the approved assessment method and disposition beside the photographs.

The sewer CCTV guide covers locating visible drain defects; a PP fusion record adds the material, procedure and test evidence needed to decide a pressure-pipe joint.

When is instrumented NDT appropriate?

Specify instrumented examination when its demonstrated capability answers the actual defect question. PPI TN-60's October 2024 discussion requires attention to detection capability, geometry, procedure and inspector competence and reports that standardized instrumented-NDT acceptance criteria were unavailable at that revision. Establish coverage and agreed acceptance criteria before ordering a scan. PPI TN-60

Require demonstration on the actual PP material and joint geometry. PE butt-joint research does not automatically validate PP socket examination, and a metal-pipe credential alone does not establish that competence. Keep a scan indication, a verified flaw and a rejectable defect as separate findings, with the procedure and decision authority recorded.

Operator qualification register

Verify scope before assigning a production joint. PPI MS-8, April 2025, requires trained, qualified operators; Aquatherm's October 2024 manual requires its installer course with an authorized trainer before installation. Keep manufacturer product training and procedure/equipment qualification as separate evidence in the register. PPI MS-8 Aquatherm manual Aquatherm FAQ

ASTM F3190-26 covers PP fusion operator qualification tied to the specified procedure and equipment scope, but its public scope expressly excludes electrofusion training. Butt fusion is the base qualification, with additional socket, saddle or sidewall training requested for those methods. ASTM F3190-26 public scope

PPI's current PP FAQ recommends F3190 training; MS-8 itself requires qualified operators without explicitly naming that standard. Apply the qualification program specified for the project and retain the actual assessment evidence. PPI polypropylene FAQs PPI MS-8

What triggers a training or qualification hold?

Hold an assignment outside the recorded polymer, method, procedure, equipment family or size range. Verify issuer status and actual issue, renewal or expiry dates; enter the program's dates rather than assuming an annual or two-year cycle. Obtain the required training and assessment before releasing that operator to the affected work.

Link each joint to the operator's issued ID. Aquatherm's September 2024 pressure procedure requires the numbers of all installers who fused the tested system, so the section test record must reconcile with the joint register, including replacement work. Aquatherm test procedure

What test pressure and medium apply to Aquatherm?

Select pressure from SDR and operating pressure, then verify every component and closure within the boundary. Aquatherm's September 2024 procedure applies the higher SDR, thinner-wall requirements to a section containing mixed SDRs. A universal instruction to test at 1.5 times operating pressure omits its fixed-pressure cases and ceilings. Aquatherm test procedure

Aquatherm's September 2024 procedure sets the fixed-pressure cases and multipliers above; its high-pressure ceilings specifically list RCT products. Obtain the applicable manufacturer ceiling for SDR 7.4 or older PP-R, and respect included valves, equipment and closures. Aquatherm test procedure

Can any part of the test use compressed air?

Aquatherm's September 2024 pressure procedure permits air only for its preliminary leak check at no more than 15 psi; its cyclic, 30-minute and 120-minute acceptance tests use water. Keep the preliminary check separate in the test record and remove fusion equipment before testing. Control air pressure throughout that check: Aquatherm warns that temperature changes can raise it above the permitted ceiling. Aquatherm test procedure

Define isolation points, purge trapped air and use rated closures. Locate the gauge near the lowest point, where water pressure is highest; hydrostatic head explains the elevation relationship. The plumbing hydrotest guide covers filling, isolation and witness fundamentals; use the selected PP procedure for the actual sequence and acceptance values. Aquatherm test procedure

Resolve any adopted-code or contract pressure that exceeds an included component's allowed test condition by revising the approved boundary or design before testing.

How long does the pressure test take, and what fails it?

Anvilfield estimates 172 minutes of programmed dwell in Aquatherm's September 2024 pressure procedure: 22 minutes of cyclic holds, 30 minutes of principal testing and 120 minutes of final testing, before filling, stabilization and pressure changes. Follow the written cycle sequence, including pressure release between cycles and at their end. Aquatherm test procedure

Aquatherm's September 2024 final-test wording both flags loss greater than 3 psi and requires stabilization below 3 psi loss. Anvilfield therefore holds an exact 3 psi result for resolution against the explicit release criterion. Visible leakage or continued decline requires action even below the numerical trigger. Aquatherm test procedure

Record intermediate observations, temperatures and every intervention, not just endpoints. Anvilfield's record control separates pre-hold stabilization and prescribed between-stage top-ups from the uninterrupted timed hold. Adding water during that hold invalidates its pressure-loss record: log the intervention, stabilize and restart the affected hold.

Use water and ambient temperatures to diagnose behavior, not to subtract a guessed thermal correction. Check visible joints, trapped air, isolation boundaries, valves, gauge and pump when pressure fails to stabilize. Correct the cause and repeat the required procedure; a temperature trend does not waive the manufacturer's criteria.

How does the Wavin procedure differ?

Anvilfield estimates at least 14 hours from the last weld through acceptance for Wavin Ekoplastik's January 2019 water-distribution sequence: a one-hour wait before filling, at least 12 hours at operating pressure, and a 60-minute test. The minimum adds those three waits; filling and pressure changes add time. Wavin specifies at least 1.5 MPa, or 15 bar, test pressure and no more than 0.02 MPa, or 0.2 bar, loss; its heating-system procedures differ. Wavin manual

Keep four clocks separate: joint cooling, permission to fill, system stabilization and acceptance testing. A socket's cooling time does not automatically authorize filling under another system's instructions. The hydrostatic test record should identify the selected system and service beside its timing.

Worked example: a 24-joint Aquatherm cold-water release

Use a 32 mm Aquatherm SDR 11 cold-water section at 60°F ambient and 80 psi operating pressure, with 24 original sockets and components rated for the selected test condition. The October 2024 socket row supplies the recipe, and the September 2024 pressure procedure selects the test pressure. Selected McElroy tooling retains the full cooling hold. Aquatherm manual Aquatherm test procedure McElroy manual

Divide rejected original joints by the original population for first-pass rejection. Add active time for each worker to estimate labor; keep that sum separate from elapsed test time.

Reject original J-017 for over-insertion restricting the bore. It is an accessible terminal fitting with trim allowance before final pipe length is set: cut back to sound pipe and replace the fitting as J-017-R1. This layout needs one replacement fusion and no added coupling. A fixed-run cut-out needs its own repair geometry and joint count.

Both worked pressure losses meet their stage criteria. Close J-017's rejection through its replacement record before section release.

Anvilfield estimates the elapsed times in the worksheet from the stated activity allowances. A complete retest adds its full dwell plus draining, filling and pressure operations; carry those tasks in the recovery schedule.

How much labor should inspection and rework include?

Anvilfield estimates 5.5 active person-hours for this section: two people each spend two hours on QA/testing and 45 minutes on the terminal-fitting repair. Multiply those person-hours by the crew's own loaded rate when preparing the bid.

Method: the November 5, 2026 estimate adds Aquatherm's specified holds to the worksheet's filling, pressure-operation and closeout allowances. Labor counts only the stated active attendance and repair time. Production installation, replacement materials, equipment and witness fees remain separate bid items.

The test clock and labor clock differ. Plan other work during stable holds where staffing and witness requirements allow it, and price required attendance explicitly. Carry supplier-quoted replacement materials, tooling rental, calibration service, sectioning, witness fees and repeated holds as identifiable allowances.

Which bid items prevent unpaid closeout work?

Define joint count and size mix, accessible versus concealed work, shop versus overhead joining, weather protection, trial joints and qualification scope. Include joint logs, witness visits, isolation and reinstatement, retesting, flushing and owner turnover. The plumbing estimating guide provides the wider quantity and labor framework.

Public bid scope should identify who supplies qualification evidence, who witnesses tests and what records complete payment and turnover. School and municipal repipe packages need a line for fusion records and witnessed testing; PorchRocket Bid Control finds public plumbing bids and the capital plans that precede them.

Pressure-test and owner-release checklist

Release a section only after every held joint or section has a closed corrective action. This Anvilfield checklist combines Aquatherm's instructions with PPI MS-8. Aquatherm manual PPI MS-8 Aquatherm test procedure

Before production

• Record fluid/service, pipe and fitting manufacturer, product markings, OD, SDR, reinforcement, lots and approved combination.
• Identify adopted code, approved contract procedure, manufacturer/manual revisions and application/warranty restrictions.
• Match each operator's qualification to PP, method, procedure, machine family and size range; verify issuer status.
• Verify tool/head compatibility, nonstick surfaces, power supply, depth guide and timing device.
• Retain actual instrument certificates/due dates and verify working-face temperature after stabilization.
• Establish weather protection, a clean/dry preparation area, supports and access for the final joint.

For each joint

• Assign a location-based joint ID and link operator, material lots, tool/head ID and procedure revision.
• Verify cut/preparation and record the prescribed depth before heating.
• Confirm both surfaces receive heat; record actual heating and transfer times against the target recipe, starting heating at full engagement.
• Complete transfer/insertion within the size-specific window without twisting.
• Observe the required hold and full cooling before loading, filling or testing, as the selected system requires.
• Inspect the circumference, depth-mark edge, alignment and accessible bore; label the inspection photo or drawing.
• Log every hold/reject, corrective action and replacement ID; close the original entry without erasing it.

Before pressure-test and owner release

• Confirm no unresolved fusion defect remains and all joints/components are accessible for the required inspection.
• Mark test limits, all included SDRs, lowest gauge point and target pressure; verify component/closure limits.
• Complete required cooling/fill wait; use the prescribed test medium and purge air.
• Identify the gauge and verify accuracy within the Aquatherm procedure's 0.5 psi requirement.
• Log the full cyclic sequence, stabilization, 30-minute and 120-minute holds, start/intermediate/end readings, every water addition or pressure adjustment, water/ambient temperature, visible observations and witness; distinguish preparation from the uninterrupted timed holds.
• Investigate leakage or nonstabilizing pressure; depressurize for repair and retest under the approved procedure.
• Complete specified flushing and potable disinfection; restore isolated equipment and final supports/movement provisions.
• Give the building owner consolidated section test records and all Aquatherm installer numbers; current policy does not accept submission to Aquatherm.
• Obtain contract/AHJ concealment permission where required and the owner's release; retain the complete record set under the contract's record schedule.

What happens after a failed joint or failed test?

Depressurize before repair, remove and replace the defective portion, and preserve the failed entry alongside the replacement ID. PPI MS-8, April 2025, requires retesting with the same pressure procedure after repair. Anvilfield recommends extending the process review to joints made under the same suspect tool, preparation or execution conditions. PPI MS-8

After a successful test, complete flushing and potable disinfection, restore isolated equipment and verify supports and thermal movement provisions. PPI MS-8, April 2025, places release with the owner or authorized representative. PPI MS-8

Aquatherm's live policy no longer requires or accepts pressure-test submissions; send the consolidated section records and every installer number to the building owner promptly. Retain the approved procedure, qualifications, tool checks, joint map, defect/remake history and witnessed test observations with the release record under the contract's retention schedule. Aquatherm pressure-test policy Aquatherm September 2024 procedure

Anvilfield. Sources checked and reviewed November 5, 2026. Update log, 2026-11-05: Clarified temperature boundaries, pressure-ceiling scope and defect disposition; added cleaning, cutback and Wavin schedule guidance; revised the labor worksheet.

How to cite this page: Anvilfield, PP-R and PP-RCT fusion inspection: Aquatherm and PPI field guide, 2026, https://anvilfield.com/field-guides/plumbing/ppr-pipe-fusion-inspection/

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Sources checked

• Aquatherm Installer Manual, October 2024 Checked November 5, 2026. pp. 1.1 training; 2.11 to 2.23 socket setup, heating/depth/time/cooling and visual defects; 2.30 to 2.33 EF; 2.34 onward butt fusion; 3.38 to 3.51 pressure procedure.
• Aquatherm Design & Planning Guide, June 2025 Checked November 5, 2026. p. 3.04 DHWR warranty restriction; 4.01 to 4.03 methods/training/assistance; 4.16 accessible testing, current online precedence and signed record.
• PPI MS-8, April 2025 Checked November 5, 2026. Qualified operators, F3722 and manufacturer procedure; §§4.1 to 4.5 accessible inspection/testing, repair/retest, flushing, disinfection and owner's release. Model specification, not automatically adopted law.
• ASTM F3722-24 public scope Checked November 5, 2026. PP pressure-pipe joining scope, related chemistry, solid/multilayer PP, manufacturer approval and consistency with DVS 2207-11. No paid clause/table reproduced.
• ASTM F3190-26 public scope Checked November 5, 2026. PP included; machine/procedure/size-specific operator qualification; additional socket/saddle scope; EF excluded. No unverifiable renewal interval.
• Aquatherm pressure procedure, September 2024 Checked November 5, 2026. September 1, 2024 revision. SDR pressure selection and ceilings, air-check limit, water-only acceptance stages, gauge accuracy, holds, loss criteria and owner records.
• Aquatherm pressure-test policy Checked November 5, 2026. No test submissions required or accepted; points to S6. Policy is distinct from the physical test procedure.
• PPI TN-60, October 2024 Checked November 5, 2026. TN-60 title and foreword identify the October 10, 2024 revision. Covers inspection evidence, instrumented NDT limitations, personnel competence and agreed acceptance criteria.
• PPI polypropylene FAQs Checked November 5, 2026. PP-R/PP-RCT compatibility; different PP versus PE parameters; current links to F3722 and F3190. No approval of every cross-brand combination inferred.
• Wavin Ekoplastik Installation Manual, January 2019 Checked November 5, 2026. pp. 34 to 36 product-specific shaving/surface preparation, depth and heating/adjustment/fixation/cooling; +5°C minimum; p. 31 one-hour fill wait and water-distribution test comparison. Precisely dated regional comparison.
• Wavin EVO PP-RCT technical sheet Checked November 5, 2026. 260°C recommendation and selected size-dependent heating times; PP-R/PP-RCT welding relationship.
• McElroy SW20902 Rev. B, January 2025 Checked November 5, 2026. Surface pyrometer (p. 3-3), incomplete-melt removal/new fitting (p. 3-4), full cooling hold/jaws, no twisting, cut out unacceptable joints, cool adapter installation and 5 to 10 minute post-adjustment stabilization.
• Aquatherm butt-fusion bulletin 202008A, August 2020 Checked November 5, 2026. Evaluated adoption of DVS 2017 for MF; 210°C ±10°C heater, 10% wall alignment limit and pressure/time distinctions. Summarize selected facts, no standard table copying.
• Aquatherm compressed-gas bulletin, December 2024 Checked November 5, 2026. New North American compressed-gas application restriction. It is not the source for the acceptance-test air ceiling; S6 supplies that.
• Wavin Ekoplastik Catalogue, 2024 Checked November 5, 2026. Identifies PP-RCT EVO and other product families; recommends 260°C and directs size-dependent heat time to technical manual.
• Aquatherm live catalog Checked November 5, 2026. Manufacturer catalog linking the June 2025 Design & Planning Guide.
• Aquatherm installer-manual landing page Checked November 5, 2026. Manufacturer landing page linking the October 2024 Installer Manual.
• Aquatherm FAQ Checked November 5, 2026. Product-trained installers and separate fusion courses; background corroboration only where current manual/guide is more specific.