MWTP-50, MWTP-50C & MWTP-250 Piping Diagrams, Spool Schedules & Plumber Tie-In Details

DWG P-101 SYSTEM: MWTP-50-GN22 ("KITCHENSHIELD-50") • 35 GPM CONT / 50 GPM PEAK

1.5" & 2.0" 316L Stainless Process Piping Schematic, Valve Arrangement & Rear Bulkhead

Sanitary tri-clamp & 150# flanged Sch 10S 316L SS process headers with flexible EPDM pump connectors (FC) and low-point freeze drains (FD).

MAIN PROCESS HEADERS: 2.0" & 1.5" Sch 10S 316L SS (TIG Purged)

WASTE HEADER: 2.0" Schedule 80 PVC (Solvent Weld + Flanged)

HYDROTEST PRESSURE: 150 PSIG for 2.0 Hours (Zero Drop)

MWTP-50-GN22 Master Pipe Line & Spool Schedule (For Pipefitter & Plumber Takeoff)

Line Number	Nom. Size	Material & Schedule	Joint / End Connection	From → To	Design Flow / Press	Inline Valves, Fittings & Instruments
RW-100	1.5"	316L SS Sch 10S + Hose	1.5" Camlock / FNPT	Port B2 (Tap/Hydrant) → `TK-100` Air Gap	40 GPM / 125 PSI	`PT-100`, `PSV-100` (set 20 PSI), `XV-100` (1.5" FC), 3" Air Gap
RW-101	2.0"	NSF-61 Suction Hose + 316L	2" Camlock + 150# Flg	`TK-100` Outlet → Port B1 → `P-101` Suction	40 GPM / Flooded	`HV-100`, Y-Strainer, `HV-101`, Flex Connector `FC-101`, `PSL-101`
PF-102	1.5"	316L SS Sch 10S (TIG)	Sanitary Tri-Clamp / Flg	`P-101` Disch → `STR-101` → `BF-101A/B` → `UF`	40 GPM / 65 PSI	`CV-101`, `AIT-101`, `XV-101` (1" Flush), PACl Quill, `SM-101`, `FIT-200`
UF-201	1.5"	316L SS Sch 10S (TIG)	1.5" Sanitary Tri-Clamp	`UF-201A/B` Permeate → `UV-401A/B` → Port B3A	35 GPM / 45 PSI	`XV-202A/B`, `AIT-201`, `XV-300` (1.5" FO Divert), NaOCl Quill, `XV-401`
CT-401	2.0"	NSF-61 White Potable Hose	2" 316L SS Camlock	Port B3A → `TK-401` (600-Gal) → Port B3B → `P-401`	35 GPM / 35 PSI	`HV-402A/B`, `FC-401`, `P-401`, `CV-401`, `AIT-402/601` → `TK-601`
PW-601	2.0"	316L SS Sch 10S (TIG)	150# Flanged / Tri-Clamp	`TK-601` (150-Gal) → `P-601A/B` → `RPZ-602` → Port B4	50 GPM / 75 PSI	`FC-601A/B`, `CV-601A/B`, `PT-602`, `FIT-602`, `XV-602` (2" FC), `RPZ-602`
BW-501	2.0"	Schedule 80 PVC (Gray)	Solvent Weld + Van Stone	Strainer, UF Reject, Divert & Clearwell Drain → Port B5	60 GPM / 30 PSI	`P-503` NaHSO₃ Dechlor Quill, Static Mixer, `CV-501`, 2" Gray Camlock
IA-801	1/2" & 3/8"	316L SS Tube + PTFE	Swagelok Compression	`CMP-801A/B` Receiver → UF Air Scour, DIT & Valve Manifold	12 SCFM / 80 PSI	0.01 µm Coalescing Filter, Precision DIT Regulator (18.0 PSI), `XV-206/207`

DWG P-102 SYSTEM: MWTP-250 (HOSPITAL / MUNICIPAL) • 250 GPM RATED • 36-FT GOOSENECK

3.0" & 4.0" 316L Stainless Process Piping Schematic, 14-Module UF Headers & 7-Port Bulkhead

Full 3" and 4" Sch 10S 316L SS welded headers with ANSI 150# raised-face flanges, Victaulic sanitary grooved UF branch couplings, and 20 pneumatic valves.

SUCTION / CT HEADERS: 4.0" Sch 10S 316L SS + 4" NSF-61 Camlock

PROCESS / POTABLE HEADERS: 3.0" Sch 10S 316L SS (UF Branches: 2.5")

REAR BULKHEAD: 7 Color-Coded 316L SS Camlock Ports (Heated Bay)

DWG P-103 LICENSED MASTER PLUMBER INSTALLATION DETAILS (PRE-SURVEY & DEPLOYMENT)

Customer Domestic Water Riser Emergency Tee, ASSE 1013 RPZ Relief & Sanitary Sewer Details

Standardized plumbing details for pre-installing emergency hookup ports at retainer restaurants and hospitals.

DWG P-104 PIPEFITTER FABRICATION, PASSIVATION & QA SIGN-OFF

316L SS TIG Welding, Elastomer Compatibility, Winterization Drains & Hydrostatic Test Log

Shop fabrication standards for highway trailer vibration, sanitary crevice elimination, and AWWA C651 disinfection.

1. 316L SS TIG Welding & Passivation (ASME B31.3 / AWS D18.1)

Material Grade: Dual-certified ASTM A312 TP316/316L (≤ 0.03% C) seamless or welded sanitary pipe (Sch 10S for flanged/grooved headers, 16 GA OD tube for sanitary tri-clamp).
100% Argon Back-Purge: All butt welds on potable and UF permeate lines must be GTAW (TIG) welded with ER316L filler and 99.998% argon internal back-purging (< 50 ppm O₂) to prevent internal "sugaring" (granulation that harbors bacteria and shreds UF hollow fibers).
Citric Acid Passivation (ASTM A967): After fabrication, circulate 4%–10% food-grade citric acid at 120–140°F for 2 hours to remove free iron and form a passive chromium-oxide layer, then rinse to neutral pH.

2. Gasket & Seal Material Compatibility Matrix

Main Process & Potable Water (< 5 mg/L Free Cl₂): Use **NSF/ANSI 61 certified peroxide-cured EPDM** gaskets for all tri-clamps, butterfly valve seats, and ANSI 150# flanges. Never use standard plumbing red rubber or non-NSF neoprene!
Concentrated 12.5% Sodium Hypochlorite (P-502A/B Dosing): Concentrated bleach attacks EPDM over time. Use **Viton (FKM) O-rings and PTFE seats/diaphragms** with Sched 80 CPVC or PVDF injection quills.
Thread Sealant on NPT Instrumentation Ports: Use **NSF-61 Virgin PTFE tape** + potable-grade anaerobic stainless anti-galling paste (Loctite 567 / Nickel-PTFE) to prevent 316SS thread galling.

3. Highway Vibration Isolation & Freeze-Drain Slope

Pump Vibration Isolators (FC): Every pump suction and discharge connection (P-101, P-401, P-601, P-202) must include a double-sphere NSF-61 EPDM/PTFE expansion joint or braided 316L SS flex hose so road shocks on the trailer frame cannot crack pump volutes.
Cushioned Unistrut Pipe Clamps: Support all headers every 4.0 ft max using 316SS Unistrut channels with EPDM-cushioned Hydra-Zorb/ZSI clamps (prevents galvanic corrosion and road rattle).
1/8" per Foot Pitch to Low-Point Drains (FD): Pitch all horizontal headers toward manual 1/2" 316SS quarter-turn drain valves so the entire plant drains in < 15 minutes for winter transport.

Pipefitter & Master Plumber Pre-Commissioning Hydrotest & Disinfection Log

Test ID	System / Header Under Test	Test Specification & Criterion	Recorded Result	Pipefitter / Plumber Sign-Off
P-FAT-01	316L SS Pressure Piping Hydrostatic Test (Isolate UF Membranes & Low-Press Tanks First!)	150 PSIG test pressure held for 120 minutes; zero visible weep or gauge drop	_______ PSIG / 2 hr	_______
P-FAT-02	UF Skid & Membrane Housing Low-Pressure Hydrotest + Pressure-Decay Integrity Test (`DIT-201`)	Hydro @ 55 PSIG; Air DIT @ 18.0 PSIG: decay ≤ 0.15 PSI/min (≥ 4.0-log credit)	_______ PSI/min	_______
P-FAT-03	Schedule 80 PVC Waste Header (`BW-501`) & Clearwell Gravity Overflow Leak Test	50 PSIG hydrotest on valved PVC section for 60 minutes; zero joint weep	PASS / FAIL	_______
P-FAT-04	ASSE 1013 Reduced Pressure Zone (`RPZ-602`) Differential Relief & Check Valve Certification	Check #1 ΔP ≥ 5.0 PSI; Check #2tight; Relief opens ≥ 2.0 PSI differential	Cert #: _________	_______
P-FAT-05	AWWA C651 High-Chlorine Shock Disinfection, Dechlorination Flush & Zero-Coliform Lab Release	50 mg/L Cl₂ contact × 3 hr (≥ 25 mg/L residual), flush to 1.8 mg/L, Bac-T Absent	PASS / ABSENT	_______

DWG P-105 SYSTEM: MWTP-50C ("KITCHENSHIELD-50C") • 20-FT SPLIT-POWER WATER TRAILER (REV C)

MWTP-50C 1.5"–2.0" 316L SS Process Piping: Direct RPZ Intake (Port A), Dual 186 mJ/cm² UV & 4-Port Bulkhead

Eliminates both ground bladders (TK-100 and TK-401) and transfer pump P-401 on Boil Water Advisory jobs by combining a pressurized ASSE 1013 RPZ intake train with EPA LT2 4-log virus-validated UV reactors (UV-401A/B) flowing directly into the 150-gal onboard clearwell (TK-601).

PORT A (BWA JOBS): 1.5" Pressurized Feed → PSV-100 (≥20 PSI) → RPZ-100

PORT B (OUTAGE JOBS): 2.0" Suction from Tanker or PWR-25 550-Gal Tank

VIRUS CREDIT: UV-401A/B ≥ 186 mJ/cm² @ 40 GPM, 85% UVT (No CT Bladder)

MWTP-50C (Rev C) Pipe Spool & Valve Schedule — Key Differences vs. MWTP-50 (Rev B)

Line / Valve Tag	Size & Material	Service / Function on MWTP-50C (Rev C)	Actuation / Fail State	Change vs. MWTP-50 (Rev B)
RW-100A / RPZ-100	1.5" 316L SS + Bronze RPZ	Direct Pressurized Raw Intake (`Port A` → `PT-100` → `PSV-100` → `RPZ-100` → `XV-100`)	Spring-Return FC + `FS-100` Switch	NEW: Eliminates 550-gal break tank on BWA jobs
RW-100B / XV-103	2.0" Sch 10S 316L SS	Unpressurized Tanker / Break-Tank Suction Intake (`Port B` → `XV-103` → `P-101` Suction)	Pneumatic / Electric Ball (FC)	Used only when city main is depressurized (<20 PSI)
UV-401A / UV-401B	1.5" 316L SS Sanitary	1 Duty + 1 Standby Amalgam UV Reactors Validated at ≥186 mJ/cm² (@ 40 GPM, 85% UVT) + `FO-401`	Auto Standby Warmup >35 GPM	NEW: Replaces 600-gal CT bladder `TK-401` & `P-401`
XV-300	1.5" 316L SS Sanitary	Post-UV Off-Spec Divert-to-Waste Valve (Trips on Turbidity >0.15 NTU or UV Dose <186 mJ/cm²)	Pneumatic Fail-Open (FO to Waste)	Relocated downstream of `UV-401A/B` to guard clearwell
PW-600 / XV-601	2.0" Sch 10S 316L SS	Potable Discharge Header (`TK-601` → `P-601A/B` → `FIT-602` → `XV-601` → `RPZ-602` → `Port C`)	Pneumatic Fail-Closed (`K-SAFE`)	Bulkhead simplified from 5 ports to 4 ports (no CT loop ports)