“TC63” Pneumatic Throttle Control Valve

The “TC63” pneumatic throttle control valve is used with gas engine-driven compressors to reduce engine speed to idle when the continuous run control (such as Models “LGM20”, “LGM30” & “LGM40” vent unloaders or Model “P25” pilot valve) has reached its “cut-out” setting. This saves fuel and reduces engine and compressor wear.

The “TC63” is connected to the throttle control port of the vent unloader via an air line. The air line can also be connected to a “tee” of the head unloader line for pilot valve installation. The linkage is attached to the throttle lever on the engine.

During operation, the vent unloader pilot valve sends a pressure signal to the pneumatic throttle control piston to extend, pushing the throttle lever on the engine to its idle position. At the cut-in setting, the pressure signal that is applied to the pneumatic throttle control is vented by the vent unloader or pilot valve, allowing the spring to return to the piston and engine throttle lever to the original, full speed, position.

The “TC63” pneumatic throttle control valve is available in 5/8” and the operational 5/16”.
Construction: Brass body, washer, piston, jam nuts, steel bracket and music wire linkage and zinc plated screw
Max. Temperature: 250ºF
Special Ordering Instructions: Specify stoke length when ordering. If stroke length is not specified, a 5/8” valve will be shipped.

“TC12” Throttle Control – Large

This larger version of the “TC12” throttle control above for use with engines above 8 HP.

“TC12” Throttle Control

“TC12” throttle controls are used with gas engine-driven compressors to reduce the engine speed to idle when the continuous run control (such as Model “LGM20”, “LGM30” and “LGM40” vent unloaders or “P25” pilot valve) has reached its “cut-out” setting. This saves fuel, reduces noise, as well as reduces engine and compressor wear.

The 1/8” NPT inlet of the “TC12” is connected to the throttle control port of the vent un-loader or connected into a “tee” of the head unloader line of pilot valve installations. The cable end is attached to the appropriate throttle linkage on the engine and the cable housing is appropriately anchored using the supplied cable clamps.

During operation, the vent unloader or pilot valve sends a pressure signal to the “TC12” at the cut-out setting, causing the “TC12” piston to extend the control cable which pushes the throttle lever, forcing the engine to idle down. At the cut-in setting, the pressure signal going to the “TC12” is vented, allowing the spring to return the piston, cable and throttle lever to the original, full speed position.

Construction:  Brass body and piston, Nitrile O-ring, zinc-plated steel spring and retaining ring, vinyl covered, steel armored housing with stainless steel cable
Min./Max. Pressure: 60 psi/250 psi
Max. Temperature: 250ºF
Special Ordering Instructions: Specify desired length (6” increments)