Model POSR-2

Description

The Model POSR-2 is a pilot operated regulator primarily for use with steam. The external pilot valve is supplied from a main valve body tapped connection. Sizes are 1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 3" and 4" (DN15, 20, 25, 32, 40, 50, 80 and 100). Handles pressure drops up to 200 psi (13.8 Bar) with adjustable outlet pressures between 5 and 150 psig (.34 and 10.3 Barg).

Inlet Design Pressure

• Up to 300 psig (20.7 Barg)

Outlet Pressure

• 5-15O psig (0.34-10.3 Barg)

Line Sizes

• 1/2" (DN15)
• 3/4" (DN20)
• 1" (DN25)
• 1-1/4" (DN32)
• 1-1/2" (DN40)
• 2" (DN50)
• 3" (DN80)
• 4" (DN100)

End Connections

• NPT – Body sizes 1/2", 3/4", 1", 1-1/4", 1-1/2" and 2" F- to F- dim. per ISA S75.08.03
• Flanged
  • DI Body: 125# FF/250# RF Integral – 1-1/2", 2", 3" and 4"
  • CS Body: 150# RF/300# RF Separable – 1", 1-1/2", 2", 3" Integral – 4"
• Ductile Iron material with NPT conn. meets dimensional requirements for ASME B16.4 for 250# pressure class. With 125# or 250# flange conn. meets dimensional requirements for ASME B16.1.
• Carbon Steel material meets ASME B16.34 for 150# or 300# pressure classes, and meets 300# pressure class for NPT conn.

Material Combinations: Body / Spring Chamber

• DI = Ductile Iron /
• CS = Carbon Steel
• CI = Cast Iron
• SST = Stainless Steel

Features

• Hardened Trim: Hardened pilot and main valve trim for long life.
• Bellows Seal: The pilot uses a bellows as a frictionless seal for the pilot valve plug. It was in corporated to ensure that the pilot maintains its sensitivity and smooth operation in older steam systems that are chemically treated and systems that are used intermittently. Prevents common “sticking” of pilot valve.
• High Sensitivity: Four pilot range springs provide high sensitivity and contribute to the valve’s excellent stability.
• Two Body Materials: Ductile iron or cast steel.
• Easy to Install: A 1/4" (DN8) NPT sensing line and the valve body are the only connections required.