AMC 2026 catalogue

Plumbing

Check Valves & Backflow Test Kits

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Backflow Test Kits

WWG5AJ67 WWG1KYB6

Item For Use With Includes Brand

Item

No. Backflow Preventer Test Kit, 3 Valve Backflow Preventers, 3-Valve Kit (3) 3 ft Hoses, (3)Test Valves, (9) Hose Adapters, 16 in

Security Strap, Analog Test Gauge, Carrying Case Watts WWG1KYB6

Backflow Preventer Test Kit, 5 Valve

Backflow Preventers, 5-Valve Kit (12) Hose Adapters, (3) 6 ft Hoses, (3) Test Valves, 16 in

Security Strap, Analog Test Gauge, and Carrying Case Watts WWG5AJ67

Grainger Items 34CU36, 34CU37, 34CU38, 34CU39, 34CU41 (3) 5ft Hoses, Analog test Gauge, Carrying Case, Certificate of Calibration.,

Clear 4 ft Bleed Tube, NPT Adapter Fittings (Set of 12), Pressure Gauge

Midwest Instrument WWG34CU34

Grainger Items 34CU36, 34CU37, 34CU38, 34CU40, 34CU41 (3) 5ft Hoses, Analog test Gauge, Carrying Case, Certificate of Calibration.,

Clear 4 ft Bleed Tube, NPT Adapter Fittings (Set of 12), Pressure Gauge

Midwest Instrument WWG34CU33

Mfr. No. 845-5 (3) 5ft Hoses, Analog test Gauge, Carrying Case, Certificate of Calibration.,

Clear 4 ft Bleed Tube, NPT Adapter Fittings (Set of 12), Pressure Gauge

Midwest Instrument WWG6AJV6

Quick Test Fitting

Mfr. No. 14-975XL, 38-975XL, 12-975XL, 34-975XL, 1-975XL, 114-975XL, 112-975XL, 2-975XL, 34-375, 1-375, 14-975XL2, 12-975XL2, 34-975XL2, 1-975XL2, 1-975XL2, 112-975XL2, 2-975XL2, 12-375XL, 34-375XL, 1-375XL, 114-375XL (3) 1⁄4 in Plastic Quick Test Fittings, O-Rings Zurn Wilkins WWG20RJ62

Test Cock Adapter Kit Mfr. No. 845-5, 110705 Contains Three 1⁄4 in NPT Quick Connect ADPT x 1⁄4 in Flare

90 Degree Swivel Fitting and Three Spare O-Rings Midwest Instrument WWG6AJW1

MIDWEST INSTRUMENT, WATTS, ZURN WILKINS

Heavy-Duty Check Valves

▪Max. pressure: 200 psi

Double Disc—Class 125 valves prevent surge and water hammer due to flow reversal; specially designed springs close discs before flow reversal can occur. With stainless steel springs and Buna N seal. Mount vertically or horizontally. Designed to fit ANSI flanges. Suitable for liquid and gas service applications. Max. temp.: 100°F. Meet ANSI and FM Approved.

WWG1RNP1

Pipe or Tube Size Length Body Material Seal Material

Mechanism and Body Design Spring Material Brand

Item

No. Double Disc Check Valve

2 in 4 1⁄8 in Cast Iron Buna-N Inline Wafer 316 Stainless Steel Mueller Steam Specialty WWG1RNP1 2 in 4 1⁄8 in Cast Iron Buna-N Inline Double Disc Stainless Steel SSI WWG1RXJ7 2 1⁄2 in 4 7⁄8 in Cast Iron Buna-N Inline Double Disc Stainless Steel SSI WWG1RXJ8 2 in 4 1⁄8 in Stainless Steel Metal Inline Double Disc Stainless Steel SSI WWG1RXK6 3 in 5 3⁄8 in Cast Iron Buna-N Inline Wafer 316 Stainless Steel Mueller Steam Specialty WWG1RNP3 3 in 5 3⁄4 in Cast Iron Buna-N Inline Double Disc Stainless Steel SSI WWG1RXJ9 3 in 5 3⁄8 in Stainless Steel Metal Inline Double Disc Stainless Steel SSI WWG1RXK8 4 in 6 7⁄8 in Stainless Steel Metal Inline Double Disc Stainless Steel SSI WWG1RXK9 4 in 6 7⁄8 in Cast Iron Buna-N Inline Wafer 316 Stainless Steel Mueller Steam Specialty WWG1RNP4 4 in 6 7⁄8 in Cast Iron Buna-N Inline Double Disc Stainless Steel SSI WWG1RXK1 6 in 8 3⁄4 in Cast Iron Buna-N Inline Wafer 316 Stainless Steel Mueller Steam Specialty WWG1RNP6 6 in 8 3⁄4 in Cast Iron Buna-N Inline Double Disc Stainless Steel SSI WWG1RXK3 6 in 8 3⁄4 in Stainless Steel Metal Inline Double Disc Stainless Steel SSI WWG1RXL2 8 in 11 in Cast Iron Buna-N Inline Wafer 316 Stainless Steel Mueller Steam Specialty WWG1RNP7 8 in 11 in Cast Iron Buna-N Inline Double Disc Stainless Steel SSI WWG1RXK4 Silent Check Valve

2 in 4 1⁄8 in Cast Iron Metal Inline Silent Stainless Steel SSI WWG1RXF4 2 1⁄2 in 4 7⁄8 in Cast Iron Metal Inline Silent Stainless Steel SSI WWG1RXF5 2 in 4 1⁄8 in Cast Iron Metal Inline Silent Stainless Steel SSI WWG1RXG2 3 in 5 3⁄8 in Cast Iron Metal Inline Silent Stainless Steel SSI WWG1RXF6 3 in 5 3⁄8 in Cast Iron Metal Inline Silent Stainless Steel SSI WWG1RXG4 4 in 6 7⁄8 in Cast Iron Metal Inline Silent Stainless Steel SSI WWG1RXF7 4 in 6 7⁄8 in Cast Iron Metal Inline Silent Stainless Steel SSI WWG1RXG5 4 in 7 1⁄4 in Cast Iron Metal Inline Silent 316 Stainless Steel Val-Matic WWG5LYH8 6 in 8 3⁄4 in Cast Iron Metal Inline Silent Stainless Steel SSI WWG1RXF9 Triple Duty Check Valve

2 in — Cast Iron Buna-N Inline Triple Duty Stainless Steel SSI WWG1RXE3 2 1⁄2 in — Cast Iron Buna-N Inline Triple Duty Stainless Steel SSI WWG1RXE4 3 in — Cast Iron Buna-N Inline Triple Duty Stainless Steel SSI WWG1RXE5

MUELLER STEAM SPECIALTY, SSI, VAL-MATIC

Silent—ASME Class 125 wafer-style valves prevent flow reversal; eliminate water hammer and system surges. EPDM seal and O-ring. Vertical or horizontal mount. For liquid service use in HVAC, power, process, chemical, and waste industries. Max. temp.: 300°F.

Triple Duty—With spring-loaded silent check valve, balancing valve, and shut-off valve. Center-guided Buna N seal disc ensures leak-free performance. For pump protection and HVAC chilled water installations. Max. temp.: 212°F. Meet ASME B16.1.

WWG6AJW1 WWG34CU33

▪Accuracy: ±2 psid (descending), except No.

WWG5AJ67 is accurate ±1% of full scale For testing reduced pressure principle, pressure vacuum breaker and double check valve backflow prevention assemblies. Capable of performing all known test procedures including those recommended by ASSE, AWWA, FCCC, HR-USC, and NEWWA. No. WWG20RJ62 fits 1⁄4" to 2" backflow preventers and includes three 1⁄4" plastic quick test fittings and O-rings.