Watts Datasheets for Control Valves

Control valves or proportional valves are power-operated devices used to modify fluid flow or pressure rate in a process system.
Control Valves: Learn more

Product Name Notes
Ductile Iron Rate-of-Flow Control Valve with Hydraulic Check Feature -- LF950GD-01
Stainless Steel Rate-of-Flow Control Valve with Hydraulic Check Feature -- 950GS-01
Designed to automatically limit flow rate to a constant, adjustable, maximum by sensing differential pressure across a remote mounted orifice plate (field installed), and close drip-tight when downstream pressure becomes...
Ductile Iron Rate-of-Flow Control Valve with Pressure Reducing Feature -- LF951GD
Stainless Steel Rate-of-Flow Control Valve with Pressure Reducing Feature -- 951GS
Designed to automatically limit flow rate to a constant, adjustable, maximum by sensing differential pressure across a remote mounted orifice plate (field installed), and reduce a fluctuating higher upstream pressure...
Ductile Iron Rate-of-Flow Control Valve with Pressure Sustaining Feature -- LF952GD
Stainless Steel Rate-of-Flow Control Valve with Pressure Sustaining Feature -- 952GS
Designed to automatically limit flow rate to a constant, adjustable, maximum by sensing differential pressure across a remote mounted orifice plate (field installed), and sustain a minimum upstream pressure. The...
Ductile Iron Rate-of-Flow Control Valve -- LF950GD
Stainless Steel Rate-of-Flow Control Valve -- 950GS
Designed to automatically limit flow rate to a constant, adjustable, maximum by sensing differential pressure across a remote mounted orifice plate (field installed). The Orifice Plate is factory calibrated based...
Ductile Iron Rate-of-Flow Control Valve with Solenoid (On-Off) Feature -- LF950GD-15
Stainless Steel Rate-of-Flow Control Valve with Solenoid (On-Off) Feature -- 950GS-15
Designed to automatically limit flow rate to a constant, adjustable, maximum by sensing differential pressure across a remote mounted orifice plate (field installed). The valve also acts as a Solenoid...
Ductile Iron Pressure Reducing Control Valve with Downstream Surge Control Feature -- LF910GD-11
Stainless Steel Pressure Reducing Control Valve with Downstream Surge Control Feature -- 910GS-11
Designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure regardless of varying flow rate, and quickly modulate toward closed when sudden high pressure downstream...
Ductile Iron Pressure Reducing Control Valve with Hydraulic Check Feature -- LF910GD-01
Stainless Steel Pressure Reducing Control Valve with Hydraulic Check Feature -- 910GS-01
Designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure regardless of varying flow rates, and close drip-tight when downstream pressure becomes greater than upstream...
Ductile Iron Pressure Reducing Control Valve with Return Flow Feature -- LF910GD-17
Stainless Steel Pressure Reducing Control Valve with Return Flow Feature -- 910GS-17
Designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure regardless of varying flow rates, and open for return flow when downstream pressure exceeds inlet...
Ductile Iron Pressure Reducing and Sustaining Control Valve -- LF912GD
Stainless Steel Pressure Reducing and Sustaining Control Valve -- 912GS
Designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure regardless of varying flow rates, and throttle to sustain a minimum upstream pressure.
Ductile Iron Pressure Reducing and Sustaining Control Valve with Hydraulic Check Feature -- 912GD-01
Stainless Steel Pressure Reducing and Sustaining Control Valve with Hydraulic Check Feature -- 912GS-01
Designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure regardless of varying flow rates, throttle to sustain a minimum upstream pressure, and close drip-tight...
Ductile Iron Pressure Reducing and Sustaining Control Valve with Downstream Surge Control Feature -- LF912GD-11
Stainless Steel Pressure Reducing and Sustaining Control Valve with Downstream Surge Control Feature -- 912GS-11
Designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure regardless of varying flow rates, throttle to sustain a minimum upstream pressure, and quickly modulate...
Ductile Iron Pressure Reducing Control Valve with Low Flow By-Pass Feature -- LF910GD-48
Stainless Steel Pressure Reducing Control Valve with Low Flow By-Pass Feature -- 910GS-48
Designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure regardless of varying flow rates. Flow requirements below the range of the main line Pressure...
Ductile Iron Pressure Reducing Control Valve with Solenoid (On-Off) Feature -- LF910GD-15
Stainless Steel Pressure Reducing Control Valve with Solenoid (On-Off) Feature -- 910GS-15
Designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure regardless of varying flow rates. The valve also acts as a Solenoid (On-Off) Control Valve.
Ductile Iron Pressure Reducing Control Valve -- LF910GD
Stainless Steel Pressure Reducing Control Valve -- 910GS
Designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure regardless of varying flow rates.
Ductile Iron Electronic Control Valve (for Electric Valve Positioning) -- LF933GD
Stainless Steel Electronic Control Valve (for Electric Valve Positioning) -- 933GS
Designed to be electrically positioned to control flow, pressure, level or temperature for water applications. By alternately energizing the (2) solenoids, the valve can be positioned to maintain a desired...
Ductile Iron Dual Chamber Pump Control Valve with Mechanical Check Feature -- 980GD-16
Ductile Iron Dual Chamber Pump Control Valve with Mechanical Check Feature -- 980GD-16-19
Stainless Steel Dual Chamber Pump Control Valve with Mechanical Check Feature -- 980GS-16
Stainless Steel Dual Chamber Pump Control Valve with Mechanical Check Feature -- 980GS-16-19
Designed to minimize pressure surges associated with the starting and stopping of pumps. The valve opens at an adjustable rate upon pump start-up, and closes at an adjustable rate upon...
Ductile Iron Pressure Relief and Surge Anticipator Control Valve -- LF925GD
Stainless Steel Pressure Relief and Surge Anticipator Control Valve -- 925GS
Designed to minimize the effects of water hammer and pressure surges resulting from: 1) Normal pump starting and stopping operations or 2) Mechanical or electrical power failure situations. The valve...
Ductile Iron Dual Chamber Deep Well Pump Control Valve -- 985GD
Stainless Steel Dual Chamber Deep Well Pump Control Valve -- 985GS
Designed to minimize the surges associated with the starting and stopping of deep well pumps. The valve closes at an adjustable rate upon pump start-up, and opens at an adjustable...
Ductile Iron Single Chamber Pump Control Valve with Rate-of-Flow Feature -- 984GD
Stainless Steel Single Chamber Pump Control Valve with Rate-of-Flow Feature -- 984GS
Designed to minimize the surges associated with the starting and stopping of pumps, and automatically limit flow rate to a constant, adjustable, maximum. The valve opens at an adjustable rate...
Ductile Iron Single Chamber Pump Control Valve with Pressure Reducing Feature -- 981GD
Stainless Steel Single Chamber Pump Control Valve with Pressure Reducing Feature -- 981GS
Designed to minimize the surges associated with the starting and stopping of pumps, and automatically reduce pump outlet pressure to a constant lower downstream pressure regardless of varying flow rates.
Ductile Iron Single Chamber Pump Control Valve with Backpressure Feature -- 982GD
Stainless Steel Single Chamber Pump Control Valve with Backpressure Feature -- 982GS
Designed to minimize the surges associated with the starting and stopping of pumps, and automatically throttle when pump discharge pressure falls below an adjustable minimum, increasing backpressure against the pump.
Ductile Iron Single Chamber Pump Control Valve -- 986GD
Stainless Steel Single Chamber Pump Control Valve -- 986GS
Designed to minimize the surges associated with the starting and stopping of pumps. The valve opens at an adjustable rate upon pump start-up, and closes at an adjustable rate upon...
Ductile Iron Dual Chamber Deep Well Pump Control Valve with Pressure Relief Feature -- 985GD-20
Stainless Steel Dual Chamber Deep Well Pump Control Valve with Pressure Relief Feature -- 985GS-20
Designed to minimize the surges associated with the starting and stopping of well pumps, and open to relieve excessive pressure during the pumping cycle. The valve closes at an adjustable...
Ductile Iron Solenoid (On-Off) Control Valve with Hydraulic Check Feature (4" and Smaller) -- LF930GD-01
Ductile Iron Solenoid (On-Off) Control Valve with Hydraulic Check Feature (6" and Larger) -- LF930GD-01-19
Stainless Steel Solenoid (On-Off) Control Valve with Hydraulic Check Feature (4" and Smaller) -- 930GS-01
Stainless Steel Solenoid (On-Off) Control Valve with Hydraulic Check Feature (6" and Larger) -- 930GS-01-19
Designed to open fully or close drip-tight as commanded by the 3-Way Solenoid Pilot, and close drip-tight when downstream pressure becomes greater than upstream pressure. The solenoid may be activated...
Ductile Iron Solenoid (On-Off) Control Valve (4" and Smaller) -- LF930GD
Ductile Iron Solenoid (On-Off) Control Valve (6" and Larger) -- LF930GD-19
Stainless Steel Solenoid (On-Off) Control Valve (4" and Smaller) -- 930GS
Stainless Steel Solenoid (On-Off) Control Valve (6" and Larger) -- 930GS-19
Designed to open fully or close drip-tight as commanded by the 3-Way Solenoid Pilot. The solenoid may be activated by a pressure switch, level probe, or any other electrical on-off...
Ductile Iron Pressure Sustaining Control Valve with Solenoid (On-Off) and Hydraulic Check Feature -- LF920GD-01-15
Ductile Iron Pressure Sustaining Control Valve with Solenoid (On-Off) Feature -- LF920GD-15
Stainless Steel Pressure Sustaining Control Valve with Solenoid (On-Off) and Hydraulic Check Feature -- 920GS-01-15
Stainless Steel Pressure Sustaining Control Valve with Solenoid (On-Off) Feature -- 920GS-15
Designed to permit flow when upstream pressure is above the adjustable setpoint of the control pilot, and throttle when upstream pressure falls below the adjustable setpoint. The valve also acts...
Ductile Iron Pressure Sustaining or Backpressure Control Valve with Hydraulic Check Feature -- LF920GD-01
Stainless Steel Pressure Sustaining or Backpressure Control Valve with Hydraulic Check Feature -- 920GS-01
Designed to permit flow when upstream pressure is above the adjustable setpoint of the control pilot, and throttle when upstream pressure falls below the adjustable setpoint. The valve closes drip-tight...
Ductile Iron Pressure Relief, Sustaining or Backpressure Control Valve -- LF920GD
Stainless Steel Pressure Relief, Sustaining or Backpressure Control Valve -- 920GS
Designed to permit flow when upstream pressure is above the adjustable setpoint of the control pilot, and throttle when upstream pressure falls below the adjustable setpoint. When installed "off the...
Pressure Reducing Control Valve with Low-Flow By-Pass -- LF6115-74JM Model 6115-74JM Pressure Reducing Control Valve with Low-Flow By-Pass is constructed the same as 6115-JM with addition of a full 3/4 in. Low-Flow By-Pass, expanding the flow range.
Pressure Reducing and Downstream Surge Control Valve -- LF6115-7JM Model 6115-7JM Pressure Reducing and Downstream Surge Control Valve is constructed same as the 6115-JM with additional downstream surge control pilot. The added surge control pilot ensures positive pressure control...
Pressure Reducing Control Valve -- LF6115-JM Model 6115-JM Pressure Reducing Control Valve is designed to reduce a higher, fluctuating inlet pressure to a constant, lower, outlet pressure.
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...
By-Pass Control Relief Valve -- 5300A Series 5300A By-Pass Control Relief Valves are used in commercial, residential and industrial applications to regulate liquid pressure as supplied by a positive pressure pump. It is a poppet-type compact...
By-Pass Control Relief Valve -- BP30 Series BP30 By-Pass Control Relief Valves are used in commercial, residential and industrial applications to regulate liquid pressure as supplied by a positive pressure pump. It is a diaphragm-operated type...
Lead Free* Hot Water Temperature Control Valve -- LF1170, LFL1170 Series LF1170, LFL1170 Lead Free* Hot Water Temperature Control Valves are specifically designed for mixing hot and cold water on hot water supply systems. They can be used for a...
Lead Free* Diaphragm Operated Bypass Control Relief Valve -- LFBP30 Series LFBP30 Lead Free* Diaphragm Operated Bypass Relief Valves regulate liquid pressure as supplied by a positive pressure pump. These relief valves protect equipment by opening at desired setting and...
Flood Protection Shutdown Control Valve -- LFF113RFP Series LFF113RFP Flood Protection Shutdown Control Valves prevent catastrophic property damage due to relief valve discharge and/or a blocked or overwhelmed floor drain during normal relief valve operation. The Series...
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...
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...
Watts® Residential 1 in. Time Clock Filter Control Valve -- W100F Solid state microprocessor with easy access front panel settings; double backwash feature offers efficiency and optimum regeneration and cleaning ability; days between regeneration feature: 1-99 days standard; 7-day optional; down...
Watts® Residential 1 in. Metered Softener Control Valve -- W100SM Solid state microprocessor with easy access front panel settings; three modes of operation meter; immediate, meter delayed, or time clock delayer; Double backwash feature, offers optimum regeneration, cleaning ability and...
Pressure Reducing with Downstream Surge Control - Reduced Port -- LFM6115-7, LFM61115-7 The Watts ACV Combination Pressure Reducing and Surge Control Valve is designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure, and will quickly modulate...
Pressure Relief and Surge Anticipator Control Valve -- LFF116-52, LFF1116-52 The WATTS ACV Combination Surge Anticipator and Pressure Relief Control Valve is designed to minimize the effects of water hammer and pressure surges resulting from: 1) Normal pump starting and...
Pressure Reducing with Downstream Surge Control - Full Port -- LFM115-7, LFM1115-7
Pressure Reducing with Downstream Surge Control -- LFF115-7, LFF1115-7
Pressure Reducing with Downstream Surge Control -- S115-7, S1115-7
The WATTS ACV Pressure Reducing and Downstream Surge Control Valve is designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure regardless of varying flow...
Pressure Reducing and Sustaining Control Valve - Full Port -- LFM115-2, LFM1115-2 The WATTS ACV Pressure Reducing and Sustaining Control Valve is designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure regardless of varying flow rates,...
Pressure Reducing and Sustaining with Downstream Surge Control - Full Port -- LFM115-43, LFM1115-43
Pressure Reducing and Sustaining with Downstream Surge Control -- LFF115-43, LFF1115-43
Pressure Reducing and Sustaining with Downstream Surge Control -- S115-43,S1115-43
The WATTS ACV Pressure Reducing and Sustaining Control Valve with Downstream Surge Control Feature is designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure...
Pressure Reducing Control Valve - Full Port -- LFM115, LFM1115
Pressure Reducing Control Valve - Reduced Port -- LFM6115, LFM61115
Pressure Reducing Control Valve -- LFF115, LFF1115
Pressure Reducing Control Valve -- S115, S1115
The WATTS ACV Pressure Reducing Control Valve is designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure regardless of varying flow rates.
Pressure Relief, Sustaining or Backpressure Control Valve -- LFF116, LFF1116 The WATTS ACV Pressure Relief, Sustaining or Backpressure Control Valve is designed to permit flow when upstream pressure is above the adjustable setpoint of the control pilot, and throttle toward...
Rate-of-Flow Control Valve -- LFF114, LFF1114
Rate-of-Flow Control Valve -- LFM114, LFM1114
Rate-of-Flow Control Valve -- S114, S1114
The WATTS ACV Rate of Flow Control Valve is designed to automatically limit flow rate to a constant, adjustable, maximum. The throttling action of the valve is controlled by an...
Rate-of-Flow Control Valve with Hydraulic Check -- LFF114-3, LFF1114-3
Rate-of-Flow Control Valve with Hydraulic Check -- LFM114-3, LFM1114-3
Rate-of-Flow Control Valve with Hydraulic Check -- S114-3, S1114-3
The WATTS ACV Rate of Flow Control Valve with Hydraulic Check Feature is designed to automatically limit flow rate to a constant, adjustable, maximum, and close drip-tight when downstream pressure...
Rate-of-Flow Control Valve with Pressure Reducing -- LFF114-2, LFF1114-2
Rate-of-Flow Control Valve with Pressure Reducing -- LFM114-2, LFM1114-2
Rate-of-Flow Control Valve with Pressure Reducing -- S114-2, S1114-2
The WATTS ACV Rate of Flow Control Valve with Pressure Reducing Feature is designed to automatically limit flow rate to a constant, adjustable, maximum, and reduce a fluctuating higher upstream...
Rate-of-Flow Control Valve with Pressure Sustaining -- LFF114-8, LFF1114-8
Rate-of-Flow Control Valve with Pressure Sustaining -- LFM114-8, LFM1114-8
Rate-of-Flow Control Valve with Pressure Sustaining -- S114-8, S1114-8
The WATTS ACV Rate of Flow Control Valve with Pressure Sustaining Feature is designed to automatically limit flow rate to a constant, adjustable, maximum, and sustain a minimum upstream pressure.
Rate-of-Flow Control Valve with Solenoid (On-Off) -- LFF114-1, LFF1114-1
Rate-of-Flow Control Valve with Solenoid (On-Off) -- LFM114-1, LFM1114-1
Rate-of-Flow Control Valve with Solenoid (On-Off) -- S114-1, S1114-1
The WATTS ACV Rate of Flow Control Valve with Solenoid (On-Off) Feature is designed to automatically limit flow rate to a constant, adjustable, maximum. The throttling action of the valve...