Zurn Parts 700XL Cast Bronze Dual Check Backflow Preventer, 1/2", Female Union x Female NPT

Dual check valve is a non testable device
• Horizontal or vertical installation
• Buna-N elastomer
• Nory polymer
• 300 stainless steel springs
  
  

  Zurn Parts 12UFX12F-700

Apollo Valves® has three state-of-the-art manufacturing facilities in the Carolinas, including two world-class foundries, allowing the production of dependable products using high-quality materials such as cast bronze, forged brass, cast steels, stainless steel, alloy 2 and other exotic alloys. Over 90% of the 30,000 Apollo Valves shipped daily are made in the USA, with every valve factory-tested and backed by a 5-year warranty. The extensive distribution center network ensures timely delivery of products, no matter where you are This is the Apollo advantage.
key features

high-quality materials: cast bronze, forged brass, cast steels, stainless steel, alloy 20, and other exotic alloys.

made in America: over 90% of valves are manufactured in the USA, ensuring high quality and reliability.

extensive product testing: every valve produced is 100% factory-tested.

5-year warranty: backing every valve for confidence and reliability.

diverse market applications: suitable for residential, commercial, institutional, and industrial sectors.

extensive distribution network: ensures timely delivery of products.

Apollo Valves 13-511-B15 Relief Valve 3/4" MPT x 3/4" MPT Steam 15 Lbs..

Apollo Valves 13-511-B15

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 cant be trapped and sediment cant 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
  
  

  174A-3/4-40PSI

Watts Water 174A-030-FS-3/4 Water Pressure Relief Valve 3/4" x 3/4" 30 psi

174A-030-FS-3/4

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
• Each hot water space heating boiler shall be equipped with a pressure relief valve set to relieve below the maximum boiler working pressure
• Water seal of high temperature resisting material isolates spring working parts from water during relief
  
  

  174A-1-30

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
  
  

  174A-3/4-125

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
  
  

  174A-3/4-150

Watts Regulators series LF288A lead free hot or cold water anti-siphon Vacuum breakers prevent the reverse flow of polluted water from entering into the potable water supply due to back siphonage. It consists of lead free brass body construction (LF288A) or chrome finish (LF288AC), chemical resistant silicone seat disc and an atmospheric vent to prevent spilling. Series LF288A has a full size orifice to assure pipe size capacity and maximum flow. It is ideal for low flow, non-continuous hot or cold water health hazard installations such as on laboratory equipment.

Full size orifice for maximum flow
• Light weight disc assembly prevents spilling under all rates of flow
  
  

  288A1/2

The integral design of the Taco 3450 combi valve combines a cartridge style backflow preventer with a pressure regulating cartridge style boiler feed valve into a unique one piece body configuration. Taco's 3450 combination dual check backflow with atmospheric vent and boiler feed valve with purge auto-reset, dial in pressure setting and adjustable indicator sets a new standard for performance and serviceability.

Auto reset from fast fill
• Simple pressure adjustment
• Serviceable cartridge for both the backflow and feed valve
• Adjustable 360 view of pressure indicator
• Large adjustment range
• Serviceable without draining the system
• 1-piece body construction
• Stainless steel strainer
• 15 psi minimum delta pressure inlet to outlet
• 12 psi factory setting, 85 - 65 psi adjustment capability
• Brass, EPDM, hi-temp engineered plastics and stainless steel cartridge components
  
  

  Taco 3450-1

Taco 3492-050-BC1 Combination Boiler Feed Valve & Backflow 1/2" Sweat Brass
Taco 3492-050-BC1

Taco 3492-050-BC1

Vent-Rite Corporation 33VT Adjustable Air Vent, 1/4", MNPT, 6 psi, Brass

Every Vent Rite vent is factory assembled, tested & inspected in the USA
• Each valve is individually packaged with external labeling for convenience & maintenance
• All brass internals with nickel plated & hand polished exterior
• Adjustable vents have wide adjustment conveniently located below the steam path
• Vent rite non-vacuum vents are adjustable and all vents are designed for positive action and straight line venting
• They function automatically to vent the air If, through an unusual condition, the vent is filled with water, the vent port automatically closes
• 1/16" vent port
  
  

  Vent-Rite Corporation 33VT