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Features
Reliability - Automatically sustains pressure directed by the pilot line on a 1 to 1 ratio (optional ratios shown below). The balanced internal valve functions to relieve excess pressure, or to maintain pressure against demand. Rubber seated valves provide zero leakage.

Installation Versatility - Operates in any position. May be supported by piping alone or by a mounting bracket. The IN and OUT ports are plainly marked on the body.

Ease of Maintenance - The valve may be serviced without
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Unit of Measure

Specifications

Old Part #

P -027257-00000 P027257 P-027257 P27257 P-27257

Pipe Size

1/2"-18 Adjustable

Model Designation

2-S

Type

3 way pilot operated pressure control

Maximum Supply Pressure

250 psi

Maximum Pilot Pressure

250 psi

Ratio-Pilot To Delivery

1:1 standard; others noted below.

Temperature Range

-20 to 160 ºF

Media

Air or inert gas

Pilot Port Size

1/4" NPT

Body Port Size

1/4" and 1" as noted below

Hysteresis

Less than 5 psi.

Materials

Body Material

3/4" and 1" die cast aluminum 3/8" & 1/2" die cast zinc

Diaphragm Material

Nylon reinforced HYCAR

Other Material

Anodized aluminum or plated