Main Valves
Type E Main Valve
The Type E Main Valve is a pilot-operated normally closed, single seat design featuring packless construction, balanced design, flexible diaphragms and protected main spring. One or more pilot regulators are mounted to Type E Main Valve to fit with the specifications defined by the pressure regulating system.
Type E2 Main Valve
The Type E2 Main Valve is pilot-operated normally closed, single seat design featuring packless construction, and protected main spring. One or more pilot regulators are mounted to Type E2 main valve to fit with the specifications defined by the pressure or temperature regulating system.
Type E5 Main Valve
The Spence Type E5 Main Valve is pilot-operated, single seated, normally closed design. The valve functions quickly and shuts tight on dead end service. The diaphragm is a balanced Nitrile material designed fro high pressure but low differential. An external condensation chamber is highly recommended. There are no springs in the steam flow path and no stuffing box. The Type E5 Main Valve is easy to maintain with all vital parts accessible without removal from the line.
Direct Operated Valves
Series 2000
The 2000 Series is a self-operated temperature regulator available with single or double seat in direct or reverse acting. It is also available with two seat areas for three-way mixing. This regulator provides economical temperature control of a storage heater and open topped tank heater.
Type N6 Differential Pressure Valves
Type N6 Differential Pressure valve is used to maintain pump discharge pressures at a constant differential above a sperate source of pressure. Used for bypass and constant differential on a boiler feed water systems. Valve shall be cast iron and cast steel bodied suitable for pressures to 200 PSI and available in 3/4" through 2" NPT and 2-1/2" Flanged.
Type D34 Water Pressure Reducing Valve
Type D34 water pressure reducing valve is adjustable, direct operated, packless, diaphragm actuated, balanced and single seated. The valve has a tight shutoff for dead end service and maintains a discharge pressure which will not vary more than 1 psig / 0.07 bar for each 10 psig / 0.70 bar inlet pressure variation. Delivery pressure variations from zero flow to rated flow do not exceed 15% of the maximum spring pressure rating. The valve is be suitable for 200°F / 93°C service temperature. Valve body is cast iron, sizes range from NPS 1 to 6 / DN 25 to 150, Size NPS 2-1/2 / DN 65 and larger have flanged ends. Trim is stainless steel to mitigate corrosion. Valve is equipped with reversible composition disc, diaphragms. All working parts are easily accessible without removal of valve from the line for ease of maintenance.
Type D50A Pressure Reducing Valve
Type D50A Valve is self operated, requiring no external energy source. The valve operates quickly and provides dead end shut off. The body materials and rating is cast iron for 200 psig and 400°F. Valve trim material is stainless steel. Valve has a standard aspirator to allow for adjustment of operation.
Type D and D2 Differential Pressure Valve
The D Series Valve is single-seated, normally open, spring loaded and diaphragm-operated. Delivery pressure is transmitted to the diaphragm through an internal control port connecting the outlet side of the valve body with the diaphragm chamber.
Control Valves
K Series Control Valve
The Types K1 and K4 Control Valves are flow to open, globe style, pneumatic diaphragm control valves. The pneumatic actuator can be arranged to operate with either air to close or air to open control. A controller sensing the controlled variable provides a signal to the actuator of the control valve to obtain the desired control.
Type K3 control valve is designed for economical control of steam, water, gas and process applications in typical institutional, commercial and industrial processes. Type K3 is a three-way valve available with either a direct or reverse acting actuator that meets most mixing or diverting application requirements.
Type J Control Valve
Type J is a single-seated, top-guided compact pneumatic globe control valve with a streamlined body. The actuators have all Stainless steel hardware with a maximum deadband of 0.3 psig / 0.02 bar. The valve trim are all 316 Stainless steel with replaceable threaded seats for easy maintenance. Standard packing if spring loaded Teflon V-rings. Optional graphite or high temperature packings available. The valve seat leakage conforms to ANSI/ISA 70-2 Class IV for metal seats and Class VI for Teflon soft seats. The valve conforms to NEMUR 4 for mounting of accessories.
Pilots
M Series Solenoid Pilot
The actuator pilots open or close the controlled system via an external control signal. Actuator pilots are avaialble in both fail open or fail closed upon loss of signal. Actuator pilots mount outside the main valve and provide remote on/off operation for a wide rage of control variables.
N Series Differential Pressure Pilots
The combination of a Spence Type N with a Spence Type E main valve produces a differential pressure regulator in a single pilot-operated valve. Type N is designed to control the pressure of the fluid discharged at a constant, adjustable differential above some separate source of pressure.
A Series Air Adjusted Pressure Reducing Pilot Operated Regulator
The A Series air adjusted pilots, when combined with a Main Valve, will control a steady or varying inlet pressure to a constant delivery pressure. The pilots can control either pressure or temperature.
D Series Pressure Reducing Pilot
Spence Pressure Regulator is a combination of D Series pilot and a Type E main valve. This regulator reduces a steady or varying initial pressure to a constant, adjustable delivery pressure. The D Series Pressure Reducing Pilot is a normally closed design with a packless construction. Can be used in conjuction with other pilots. Spring pressure ranges from 30 inches vacuum to 300 PSI.
Type P125 Trip Stop Pilot
The Type P125 trip stop pilot is used in conjunction with a Spence main valve. This combination is known as a trip stop valve. Type P125 is a manually resettable trip pilot that, once “tripped”, results in the closing of a Spence main valve; therefore preventing further overpressure of the downstream system. The trip pilot is set at a pressure slightly greater than the desired delivery pressure. This setting procedure is completed at the factory before the pilot is shipped.
Q Series Pilots
The Q Series pilot is separated from the main valve and connected to it with a male union. It is normally closed, designed with packless construction and interchangeable on all sizes of main valves. A strainer screen shall be built into the pilot inlet. These regulators are designed to maintain a constant back pressure by discharging excess flow to a lower system pressure or atmosphere. The EQ Series are intended primarily for steam service and provide dead-end shutoff. A SpenceTM back pressure regulator is not a safety valve and should never be used as such.
Type SP/P Pressure Safety Pilot
Type SP/P Pressure Safety Pilot used to prevent a rise in reducing valve pressure. Complete pressure regulator with safety pilot includes Type E Main Valve or Type D Pilot and Type SP/P Safety Pilot. Body is cast steel rated 600 PSIG 750F or bronze rated 300 PSIG 500F.
T124 and T134 Temperature and Pressure Pilot
ET124 and ET134 Series are steam pressure reducing valves and temperature regulators in a single pilot-operated valve. These regulators are combination of Type T124 or T134 pressure and temperature pilot and a Type E or E2 main valve. Steam pressure on the heater is modulated in proportion to temperature and load variations. Pressure control provides fast, accurate adjustment of heat transfer rate to demand requirements.
Type T14 Temperature Pilot
The Spence Type T14 is a temperature pilot regulator. When combined with the Spence Type E Main Valve, it produces a temperature regulator, ET14, or a combined pressure and temperature regulator in a single pilot operated valve, ET14D. Type T14 pilot is recommended for use with storage heaters, jacketed kettles and vats.
T61 Series Pneumatic Temperature Controller
The T61 Series Temperature Controller is ideal for wide ranging, fast changing loads on instantaneous heaters and other difficult process applications. The cascade principle, normally used only on instrument type regulators, is the basis for this design. T61 Series, used with a properly selected A Series Pilot or Control Valve, continuously adjusts a pressure regulator to the required heater pressure. This action, coupled with the fast response of a bimetallic thermostat, gives exceptional results. Added convenience and economy results from the wide (200°F / 93°C) adjustable range and the low air consumption (0.35 cfm / 0.59 m3 /h). These controllers have adjustable proportional band as well as over temperature protection.
Type VH210 Electronic Actuator Pilot
In steam systems, it is essential to turn steam on slowly to prevent shocking the piping system, which could result in damaged or broken piping and equipment. This Electronic Time Controller (ETC), when used with Type VH210 Pilot mounted to a Main Valve, will perform this operation automatically, eliminating the need for a technician to slowly open a supply valve manually. In some applications, slow shut down is also needed.
Nicholson Announcement
Nicholson Steam Trap has now become SpenceTM Steam Traps and Specialty Products. The portfolio includes mechanical, orifice, thermostatic, thermodynamic, variable orifice, and clean steam product designs in addition to condensate pumps, piping specialties, and other accessories.
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