HA4A Pressure Regulator

These valves combine modern design and new age materials with advanced manufacturing techniques and intense quality control to offer a significantly superior and reliable product. Their ductile iron bodies are stronger and more rugged than common cast iron, or so called semi-steel (class B iron), valves. They are more dirt resistant than full skirted-piston-design valves.

All regulators use energized Teflon dirt-wiping piston seals which operate reliably, even under dry, oil-free conditions. The screw-on control modules (pilots) are easy to change and can be used on all valve sizes. All valves incorporate Teflon seating and stainless steel spring closing. Manual-opening stems are located on top of valves, up and away from dirt and rust particles to avoid thread jamming. Nonasbestos gaskets are standard. These standard regulator valves use the same flanges and spacing as R/S model A4A, except 1¼” (32mm). Special Hansen 1¼” 4-bolt regulators are available from stock to exactly replace R/S 1¼” A4A only.