Temperature and Pressure Control Valves | Boiler Supplies Steam Pressure Reducing & Regulating Valves Watson McDaniel HD Main Pressure Pilots
The Pressure Pilot controls the operation of the HD Regulator. The sensing line connects the pressure pilot to the downstream side of the regulator. Pressure in the sensing line applies an upward force to the pilot diaphragm to compress the adjustment spring. When system pressure equals set point, the diaphragm moves upwards against the force of the adjusting spring, closing pilot valve. When the pilot valve is shut, steam cannot pass thru to the underside of the regulator diaphragm, closing the regulator. When the steam pressure falls below its set point, the pilot valve opens allowing steam to lift the main valve diaphragm which opens up the regulating valve.
| Part # | Pressure | Description | Price | Qty | |
|---|---|---|---|---|---|
| PP-Y | 3-25 PSI | 3-25 PSI Pressure Pilot Yellow Spring | $663.16 | Add to Cart | |
| PP-B | 20-100 PSI | 20-100 PSI Pressure Pilot Blue Spring | $663.16 | Add to Cart | |
| PP-R | 80-200 PSI | 80-200 PSI Pressure Pilot Red Spring | $663.16 | Add to Cart |
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