Watts Datasheets for Steam Valves

Steam valves are used to control the flow and pressure level of steam and heated water vapor.
Steam Valves: Learn more

Product Name Notes
High Capacity Feed Water Pressure Regulators -- 1156F Series 1156F High Capacity Feed Water Pressure Regulators are for use in commercial and residential hydronic heating systems to fill the boiler and piping system with water, and to maintain...
Bronze Process Steam Pressure Regulators -- 127SS Series 127SS Process Steam Pressure Regulators are used in commercial, industrial, and institutional applications to regulate steam pressure in the main line and large capacity process services. They feature a...
Process Boiler Water Feeders -- 142 Series 142 Process Boiler Water Feeders are used in heating applications on pressing machines when direct feed through the float chamber is permissible. The water pressure must be at least...
Process Boiler Water Feeders -- 144 Series 144 Process Boiler Water Feeders are used in heating applications on pressing machines when feed through the float chamber is permissible. It has external water feed connections: a 1/2...
Dual Controls (Regulator and Relief Valve) -- 1450F 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...
Iron Process Steam Pressure Regulators -- 152A Series 152A Process Steam Pressure Regulators are used in commercial, industrial, and institutional applications to regulate steam pressure in autoclaves, steam tables/irons, vulcanizers and large capacity process services. It is...
Stainless Steel Process Steam Pressure Regulators -- 152SS Series 152SS Stainless Steel Process Steam Pressure Regulators are used in commercial, industrial, and institutional applications to regulate steam pressure in autoclaves, steam tables/irons, vulcanizers and large capacity process services.
Hydronic, Two-Way, Universal Flow Check Valve -- 2000-M5, 2000S-M5 Series 2000-M5, 2000S-M5 Hydronic, Two-Way, Universal Flow Check Valves are for use in commercial and residential hydronic heating systems to provide positive shutoff when circulator is not running, preventing flow...
Bronze Process Steam Pressure Regulators -- 252A Series 252A Process Steam Pressure Regulators are used in commercial, industrial, and institutional applications to regulate steam pressure in autoclaves, steam tables/irons, vulcanizers and large capacity process services. It is...
Steam Safety Relief Valve, ASME Section IV -- 315-M Series 315-M2 Steam Safety Relief Valves are used in commercial and industrial applications for low-pressure, steam heating boilers and process equipment. It consists of a bronze body construction with NPT...
Steam Safety Relief Valve, ASME Section IV -- 415 Series 415 Steam Safety Relief Valves are used in commercial and industrial applications for low-pressure, steam heating boilers and process equipment. It consists of a brass body (size 1/4 in.),...
Steam Check Valve -- 600-Z3 Series 600-Z3 Steam Check Valves are used in high cycle steam applications. They feature a bronze body heavy internal construction for longer life, conical 316 stainless steel disc for full...
Radiator Supply Valve -- 65 Series 65 Radiator Supply Valves are used as positive manual shutoffs in two-pipe steam or forced circulation hot/chilled water systems. They feature a brass body with threaded-male union connection, non-rising...
Combination Fill Valve and Backflow Preventers -- 911, 911S Series 911, 911S Combination Fill Valve and Backflow Preventers are for use in commercial and residential hydronic heating systems to provide make-up water to the boiler, and prevent backflow when...
Bronze High Capacity Feed Water Pressure Regulators -- B1156F Series B1156F Bronze High Capacity Feed Water Pressure Regulators are for use in commercial and residential hydronic heating systems to fill the boiler and piping system with water, and to...
Bronze Combination Fill Valve and Backflow Preventers -- B911, B911S Series B911, B911S Bronze Combination Fill Valve and Backflow Preventers are for use in commercial and residential hydronic heating systems to provide make-up water to the boiler, and prevent backflow...
Brass Boiler Drain Shutoffs -- BD Series BD Brass Boiler Drain Shutoffs are for use in commercial and residential hydronic heating systems. It consists of a brass body construction with 3/4 in. (20mm) hose thread connection...
Brass Quarter-Turn Boiler Drain Shutoffs -- BD-QT Series BD-QT Brass Quarter-Turn Boiler Drain Shutoffs are for use in commercial and residential hydronic heating systems. It consists of a brass body construction with 3/4 in. (20mm) hose thread...
Cast Iron Process Steam Pressure Regulators, Flanged Connections -- F127SS Series F127SS Process Steam Pressure Regulators are used in commercial, industrial, and institutional applications to regulate steam pressure in main line and large capacity process services. They feature a cast...
Steam Safety Relief Valve, ASME Section I -- Figure 31 Series Figure 31 Steam Safety Relief Valves are ASME section I valves used on steam boilers with operating pressures from 5 to 250psi (.34 to 17.2 bar). Series Figure 31...
Steam Safety Relief Valve, ASME Section VIII -- Figure 41 Series Figure 41 Steam Safety Relief Valves are ASME section VIII valves used for over-pressure protection of unfired pressure vessels, steam pressure reducing valve stations, and other steam service equipment...
Automatic Vent Valve -- FV-4 Series FV-4 Automatic Vent Valves are used in commercial and residential hydronic heating applications to provide automatic air venting for hot or cold water distribution systems. It consists of a...
Automatic Vent Valve, Chrome Plated -- HAV Series HAV Automatic Vent Valves are used in commercial, residential, and industrial hydronic heating applications to provide automatic or manual air venting in baseboards, convectors, radiators, and high points in...
Hydronic Balancing Ball Valve -- HBV Series HBV Hydronic Balancing Ball Valves are used in forced hot water systems. They feature a brass body with solder x solder sweat connections. Working Pressure: 600psi (41 bar) (non-shock)...
Hot Water Angle Valve -- HWA Series HWA Hot Water Angle Valves are used in heating applications for gravity hot water heating systems only. They feature a bronze body, rising stem and phenolic handwheel. Maximum Working...
Isolation Pump Flanges for Circular Pumps -- LFIPF-HV Series LFIPF-HV Lead Free* Isolation Pump Flanges are designed to isolate circulator pumps to facilitate circulator pump replacement or repairs. LFIPF-HV feature a Lead Free* brass body and flange with...
Lead Free* Multi-Orifice Flow Control Valve for Tankless Heaters -- LFP3 Series LFP3 Lead Free* Multi-Orifice Flow Control Valves for Tankless Heaters are for use in commercial and residential hydronic heating systems to limit the flow of water to equipment in...
Bronze Feed Water Pressure Regulators -- N256 Series N256 Bronze Feed Water Pressure Regulators are for use in commercial and residential hydronic heating systems to fill the boiler and piping system with water, and to maintain water...
Oil Tank Valve -- OTV Series OTV Oil Tank Valves are used as a shutoff valve for oil tanks. They feature a brass body and iron handwheel. Model OTV-FL with threaded male connection x threaded...
Oil Tank Valve -- OTV-M1 Series OTV-M1 Oil Tank Valves are used as a shutoff valve for oil tanks. They feature a brass body and adjustable packing nut. Model OTV-FL-M1 with threaded male connection x...
Multi-Orifice Flow Control Valve for Tankless Heaters -- P3 Series P3 Multi-Orifice Flow Control Valves for Tankless Heaters are for use in commercial and residential hydronic heating systems to limit the flow of water to equipment in tankless heater...
Bronze Steam Radiator Valve -- RA-1-AP Series RA-1-AP Steam Radiator Valves are used as shutoff valves in steam or hydronic heating systems. They feature a bronze body and angle pattern with FIP x male union connections..
Bronze Steam Radiator Gate Valve -- RA-1-SW Series RA-1-SW Steam Radiator Gate Valves are used as shutoff valves in steam or hydronic heating systems. They feature a bronze body and straight pattern with thread x male union...
Brass Steam Radiator Valve -- RA-2-AP Series RA-2-AP Steam Radiator Valves are used as shutoff valves in steam or hydronic heating systems. They feature a brass body and angle pattern with FIP x male union connections..
Purge, Drain and Balancing Valve -- RPVM1 Series RPVM1 Residential Purge and Balancing Valves are used in heating applications on boiler return piping to facilitate removal of air from heating zones on initial fill and to control...
Bronze Feed Water Pressure Regulators with Separate Strainer -- T156B Series T156B Bronze Feed Water Pressure Regulators with Separate Strainer are for use in commercial and residential hydronic heating systems to fill the boiler and piping system with water, and...
Bronze Union Elbows -- UL Series UL Bronze Union Elbows are used in steam and hot water systems. They feature a bronze body with FIP female threaded x male threaded union or solder x male...
Master Tempering Valve for Hot Water Distribution with Checkstops -- N170 CSUT The N170 CSUT Master Tempering Valve Series is designed for use in commercial and institutional applications, to mix hot and cold water to reduce high service water temperature to the...