How does water pressure reducing valve work?

Spring-Loaded Pressure-Reducing Valves On the bottom of the diaphragm, the outlet pressure of the valve forces the diaphragm upward to shut the valve. When the outlet pressure drops below the set point of the valve, the spring pressure overcomes the outlet pressure and forces the valve stem downward, opening the valve.

How does pilot pressure work?

Pilot operated check valves work by allowing free flow from the inlet port through the outlet port. Supplying a pilot pressure to the pilot port allows flow in the opposite direction. Air pressure on top of the poppet assembly opens the seal allowing air to flow freely.

How does a pilot regulator work?

All pilot-operated regulators follow the same sequence of events: 1) The downstream pressure changes. 2) The pilot senses the pressure change and moves in response. 3) The pilot movement alters the loading pressure. 4) The change in loading pressure forces the main valve to reposition.

Why choose an Spence steam pump?

Spence engineered steam specialty and fluid control products meet the changing needs of today’s HVAC and industrial marketplaces. Our steam traps and condensate pumps are designed for industrial applications such as condensate systems, district heating, main steam systems, process control, and process heating

What are the advantages of a Spence regulator?

Some of the key advantages of a Spence Regulator are: • Virtually Frictionless for Long Service Life • Easy In-Line Maintenance • ANSI/FCI 70-2 Class IV Shutoff • Packless construction • Trim Options Available for Precise Sizing

What is an e main valve?

Spence Valve’s principal valve is the single seat, normally closed, E Main Valve. The E Main meets the requirements of a large majority of regulator installations as it can be controlled by various types of interchangeable pilots.