Watts Water 740-030-FS-3/4 Pressure Relief Valve 3/4" FPT x 1" FPT 30 psi

740-030-FS-3/4

VentRite 75VT Brass Non-Adjustable Air Valve, 3/4 x 1/2", Male x Female

All vents are factory assembled, tested and inspected in the USA
• Each vent is individually packed with external labeling for convenience and maintenance
• Our vents have all brass internals with nickel plated and hand polished exterior
• Every Vent-Rite vent is factory assembled, tested and inspected in the USA
  
  

  Vent-Rite Corporation 75VT

Webstone Valve 75003 Air Separator 3/4" Sweat

75003

VentRite 77VT Brass Non-Adjustable Air Valve, 3/4 x 1/2", Male x Female

All vents are factory assembled, tested and inspected in the USA
• Each vent is individually packed with external labeling for convenience and maintenance
• Our vents have all brass internals with nickel plated and hand polished exterior
• Every Vent-Rite vent is factory assembled, tested and inspected in the USA
  
  

  Vent-Rite Corporation 77VT

Watts 9DM3-S Forged Brass Dual Check Backflow Preventer with Intermediate Atmospheric Vent, 1/2", Female Union

It prevent the reverse flow of hot or cold polluted water from entering into the potable water supply
• It consists of a brass body with stainless steel internal parts, integral strainer, and two durable, tight-sealing, rubber check valves
• For continuous pressure, non-health hazard applications in smaller supply lines
• It features a primary check valve utilizing a rubber disc seating against a mating rubber part to ensure tight closing
• A secondary check valve utilizes a rubber disc-to-metal seating
• In the event of fouling of the downstream check valve, leakage would be vented to atmosphere through the vent port thereby safeguarding the potable water system
• True line-sized construction allows the check modules to open further allowing dirt and debris to pass more freely reducing check fouling
• Maximum flow at low pressure drop
• Furnished with union connections to facilitate removal and replacement for maintenance
• Compact for economy combined with performance
• Design simplicity for easy maintenance
• Can be installed vertically or horizontally
  
  

  9DM3SW1/2

Heat-Timer Corporation 925006-00 Straight Variable Adjustable Radiator Air Vent Valve 1/8" MPT

Heat-Timer Corporation 925006-00

Heat-Timer Corporation Varivalve 925005-00 Chrome-Plated Brass Angle Radiator Quick Vent Valve, 1/8", Male

Exclusive fingertip adjustment
• Large variable orifice
• Phosphor bronze bellows
• High temperature's" ring seal
• Seat and poppet at inlet to valve
  
  

  Heat-Timer Corporation 925005-00

Cash Acme VR-801 Vacuum relief valve is designed to protect hot water supply systems and pressure vessels against negative pressure. It is especially well suited for many domestic and commercial systems. It works by preventing internal Vacuum conditions that could result in burned out heaters and/or collapsed storage tanks. Installed on the cold water supply line, the Cash Acme VR-801 closes tightly under pressure and opens at a 1" mercury Vacuum. Atmosphere admitted to the system breaks the Vacuum, preventing collapse of the storage tank.,

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.

Watts Water B145

Watts Regulator series 374A boiler pressure relief valves are used in hot water boiler applications to protect against excessive pressure on all types of hot water heating boiler equipment. It consists of an iron body construction with forged bronze inlet connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 374A 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.

Iron body with forged brass inlet
• Seat located above drain, water cant be trapped and sediment cant foul seat
• Non-mechanical seat-to-disc alignment will not stick or freeze
• Each hot water space heating boiler shall be equipped with a pressure relief valve set to relieve below the maximum boiler working pressure
• Non-metallic disc-to-metal seating
• Bronze inlet wetted parts
  
  

  Watts Water B145-9A

Watts Regulators series 740 boiler pressure relief valves are used in hot water space heating boiler applications to protect against excessive pressure on all types of hot water space heating boiler equipment. It consists of a iron body construction with expanded outlet drain connections for hot water space heating boilers, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 740 offers large discharge capacity, resists corrosive water conditions, resists 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.

Iron body with expanded outlets for hot water space heating boilers
• 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
  
  

  Watts Water B145-5