Air Valves

Features Solenoid-operated diaphragm valves provide slow opening and fast closing suitable for controlling natural, LP or manufactured gases. They are normally used on atmospheric boilers, commercial water heaters, and rooftop heaters V48 for line voltage service; V88 for 24Vac service Close firmly with diaphragm that is both weight and spring loaded Two second maximum closing time Valve closes on power failure; recommended for final shutoff service Set opening time with various sized bleed orifices or adjustable bleed valve Use with LP, natural or manufactured gases Made with cast ...

Watts 1/2" Relief Valve 0388798 This 1/2" dual control regulator and relief valve is 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. It has high capacity ...

Honeywell SuperVent® Air Eliminator PV125S, 1-1/4" Sweat Features Conventional automatic air vents installed in Hydronic heating systems can leak and cause inefficient system operation. To effectively eliminate air from the system without bleeding, air bubbles need to be vented. The NEW Honeywell SuperVent purges air through a no clog vent assembly that controls dirt and debris to minimize air vent fouling No clog vent Dirt and Debris resistant 360° adjustable collar ring for installation flexibility Stainless steel concentrator which eliminates gurgling noise Bronze body for rigid ...

For reliability, performance, flexibility and ease of installation and service in one compact control, Robertshaw's 24 volt combination gas valves are the answer. These valves feature a manual valve (gas cock), an automatic pilot safety valve, inlet/outlet screens, pilot outlet, pilot gas filter and pilot adjustment key. Regulated and nonregulated models are available. The automatic pilot safety valve is separate from the gas cock and provides gas shutoff in case of pilot outage. Valves can be mounted in any position except upside down. The 700 Series 24 Volt Uni-Kits® have a pressure ...

Watts 1-1/4" Steam Trap 0037106 This float and thermostatic steam trap, 1 1/4" with .312 orifice, is used in steam main drips and process applications to provide continuous air venting and condensate removal. It features an iron body H-pattern design, stainless steel valve head, seat, float and thermostatic air vent. It is water hammer resistant and can be serviced without disturbing system piping and it is ideal for use in unit heaters, heat exchangers/reboilers, air heating coils, steam main drips, and process equipment. Operating pressure is 15 PSI.