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BackStop Hydronic ExpansionTanks absorb the expansion pressure in residential or commercial hydronic (forced hot water) heating and cooling systems. Each tank is pressure rated up to 150 PSI and equipped with a carbon steel connection. High-grade, deep drawn steel is used for improved strength to weight ratio. Larger models feature a rugged, stable, base.
Item#:
12-H60
Manufacturer Item:
12-H60
Manufacturer:
WATTS REGULATOR CO
Watts Regulator GBV34 Gas Shut Off Valve 3/4" FPT
Item#:
GBV34
Manufacturer Item:
GBV34
Manufacturer:
WATTS REGULATOR CO
Item#:
PWMB10M10
Watts Water LF600-1/2 Maxi-Flo Silent Check Valve 1/2" FPT Lead Free
Item#:
LF600-1/2
Manufacturer Item:
0551575
Manufacturer:
WATTS REGULATOR CO
Legend 110-106 Radiator Steam Valve 1-1/4" FPT x MPT Angle


Item#:
110-106
Manufacturer Item:
110-106
Manufacturer:
WATTS REGULATOR CO
Watts Regulator LF70A-T-1/2 Mixing Valve 1.2" FPT 120-160 Degrees Lead Free
Item#:
LF70A-T-1/2
Manufacturer Item:
0559130
Manufacturer:
WATTS REGULATOR CO
Air Gaps for Reduced Pressure Zone Assemblies provide an unobstructed, physical separation between the discharge end of a potable water supply line and an open receiving vessel. The installation of an air gap and drain line are recommended on reduced pressure zone assemblies. Air Gaps can be installed vertically or horizontally.
Item#:
909-AGA
Manufacturer Item:
0881399
Manufacturer:
WATTS REGULATOR CO
Item#:
FV-4M1
Item#:
HP-30PRO-125
Watts Water LF25AUB-Z3 Reducing Valve 1" x 1" FPT x FPT Bronze,
Item#:
LF25AUB-Z3
Manufacturer Item:
0009309
Manufacturer:
WATTS REGULATOR CO
Watts Regulators series 174A boiler pressure relief valves are used in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment. It consists of a bronze body construction with NPT threaded female inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 174A resists corrosive water conditions, sticking and freezing, and prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief and shall not be used as an operating control.
    Safety relief valves for pressure protection only of all types of hot water heating boiler equipment
  • Seat located above drain, water can't be trapped and sediment can't foul seat
  • Non-mechanical seat-to-disc alignment will not stick or freeze
  • Water seal of high temperature resisting material isolates spring working parts from water during relief
Item#:
174A-1-125
Manufacturer Item:
0275404
Manufacturer:
WATTS REGULATOR CO
Watts Regulators series 174A boiler pressure relief valves are used in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment. It consists of a bronze body construction with NPT threaded female inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 174A resists corrosive water conditions, sticking and freezing, and prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief and shall not be used as an operating control.
    Safety relief valves for pressure protection only of all types of hot water heating boiler equipment
  • Seat located above drain, water can't be trapped and sediment can't foul seat
  • Non-mechanical seat-to-disc alignment will not stick or freeze
  • Water seal of high temperature resisting material isolates spring working parts from water during relief
Item#:
174A-3/4-75
Manufacturer Item:
0274598
Manufacturer:
WATTS REGULATOR CO
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