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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
  

Watts AS-MB-100 Microbubble Air Separator, 1", IPS, 150 psig, 240 deg F, 15 gpm, Forged Brass, 3-12/16" L x 6-15/16" H

Features a durable brass body construction, corrosion-resistant polyphenylsulfone cOverall Lengthescing media that withstands petroleum based cleaners, glycol anti-freeze
• Requires no minimum inlet/outlet piping length for proper operation
• DuoVent air vent assembly has a high-capacity and high-temperature rating
• Fully serviceable - can be disassembled for inspection and cleaning
• Bottom tapping for use with series RBFF residential boiler fill fitting
  

Watts Water ASM1-1-1/4 Are Scoop 1-1/4"

Watts Water ASM1-1 Air Scoop 1" FPT
Watts Water ASM1-1

Watts Water BD911S Bronze Combination Fill Valve Feeder and Backflow Preventer, 1/2" NPT

Pre-assembled for ease of installation
• Push butTon fast fill with auto-stop to prevent system over-pressurization
• Dial indicator eliminates need for pressure gauge
• High capacity fill valve for quick system filling and purging
• All bronze body construction union solder x NPT connections
• Dial indicator plus or minus 2 psi
• Series BD911 combination fill valve and backflow preventer consists of a model 9D backflow preventer and model BD1156F feed water pressure regulator in one pre-assembled unit
• Combination bronze dial set fill valve
  

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 Regulators series 1450F dual controls regulator and relief Valve are for use in commercial and residential hydronic heating systems to fill the boiler and piping system with water, and to maintain water pressure in the system at all times. It also provides make-up water to the system in the event of system leaks. It consists of an iron and bronze body construction with NPT threaded inlet and outlet connections, an attached iron body, diaphragm relief valve, a tight seating check valve, purge lever for manual purging, and a stainless steel strainer. Series 1450F has high capacity performance and simplified servicing design. It is suitable for use in the boiler feed lines of hydronic heating systems.

Combination fill valve and safety pressure relief valve
• Tight seating check valve
• Purge lever for manual purging
• High capacity
• Stainless steel strainer to protect the valve disc from fouling
• 15 psi set and 30 psi relief valve setting
  

Watts Regulator series 3L pressure relief valves are used in residential applications to protect against excessive pressure on domestic storage tanks, tankless water heaters, and solar heating applications. It consists of a bronze body construction with NPT threaded male inlet and NPT threaded female (drain) outlet connections, stainless steel spring, and test lever.

Used for protection against excessive pressure on domestic storage tanks or tankless water heaters
• Popularly used in conjunction with the model 210 gas shutoff valve on gas water heaters to shut off gas to heater if water heater temperature exceeds 210 deg F
• Furnished with test levers
• Relieves excessive pressure on storage tanks and tankless water heaters
• Compatible with model 210 gas shutoff valves
• Stainless steel spring
  

Watts Regulator series 53L pressure relief valves are used in residential applications to protect against excessive pressure on domestic storage tanks and tankless water heaters.

Used for protection against excessive pressure on domestic storage tanks or tankless water heaters
• Furnished with test levers
• Relieves excessive pressure on storage tanks and tankless water heaters
• Compatible with model 210 gas shutoff valves
• Stainless steel spring
  

Watts Regulators series 530C calibrated pressure relief valves are used in commercial, residential and industrial applications to protect against excessive pressure in systems containing water, oil or air. It consists of a bronze body construction with NPT threaded male inlet and NPT threaded female drain outlet connections, stainless steel spring, brass bonnet, Buna-N disc, and Buna-N o-ring. Series 530C has a calibrated adjustment feature for setting the valve to the required relief pressure, and is ideal for by-pass thermal expansion pressure relief not ASME approved. Model 530FP is for use in fire protection systems.

Calibrated adjustment feature for setting valve to relief pressure required
• Stainless steel spring
• Brass bonnet, disc holder and spring washer
  

Watts Regulators series 530C calibrated pressure relief valves are used in commercial, residential and industrial applications to protect against excessive pressure in systems containing water, oil, or air. It consists of a bronze body construction with NPT threaded male inlet and NPT threaded female (drain) outlet connections, stainless steel spring, brass bonnet, buna-N disc and buna-N o-ring. Series 530C has a calibrated adjustment feature for setting the valve to the required relief pressure, and is ideal for by-pass thermal expansion pressure relief.

Valves are spring operated brass valves designed for use only as protection from the build up of excessive pressure in systems containing water, oil or air
• Incorporate a calibrated adjustment feature for setting the valve to the relief pressure required
• Adjustable stainless steel spring
• Buna-N disc on machined body seat
• Should not be used in system application
• Brass bonnet, spring washer and disc holder
  

Watts Regulator series 100xL temperature and pressure relief valves are used in water heater and hot water storage tank applications to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters up to 105000 BTU. They feature a bronze body with MNPT inlet and FNPT outlet connections, unique thermostat with special thermo-bonded coating, and a test lever.

Features a unique thermostat with special thermo-bonded coating
• Stainless steel spring
• Thermostat is accurate and proven and exclusively designed and manufactured by Watts