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PRO & PRC Pressure Release Valves

Product Features and Specifications

  • General Product Information
    • schydraulic-prcpressurereleasevalve
      PRESSURES UP TO 30,000-PSI
      COMPATIBLE WITH MOST FLUIDS
      AIR ACTUATED - NO ELECTRICITY REQUIRED
      NORMALLY OPENED OR NORMALLY CLOSED POSITIONS AVAILABLE

      SC Pressure Release Valves are available in normally open and normally closed configurations. All of the valves are air actuated and are compatible with most fluids including water and synthetic compounds. Seals are Buna-N as standard (-N). Substitute "–V" for Viton® seals or "–E" for EPR.

      Typically, pressure release valves are used to release pressure on single acting cylinders, hydrostatic test applications, or for providing a safety relief in a circuit.

  • Applications
    • Release pressure on valve actuators
      Safety relief valve for air pressure regulators
      Release pressure or control motion of hydraulic cylinders
  • Dimensions
    • schydraulic-propressurereleasevalvedims schydraulic-prcpressurereleasevalvedims
      PILOT OPERATED PRESSURE RELEASE VALVE
      Model No. Normal
      Condition
      Pilot Ratio
      for
      Actuation
      Max Op
      Pressure
      (psi)
      Connection Ports Cracking Press.
      Reverse Flow
      (psi)
      Pilot
      Press.at
      Max. (psi)
      "L" Dim.
      Inch
      "A" Dim.
      Inch
      "D" Dim.
      Inch
      Pressure Return Pilot 
      PRC-060-N-100 Closed 120:01:00 6,000 1" NPT 1" NPT 1/4" NPT 20 50 7.9 4.56 2.75
      PRC-100-N-050 Closed 285:01:00 10,000 1/2" NPT 1/2" NPT 1/4" NPT 5 35 6.73 3.5 3
      PRC-200-N-050 Closed 500:01:00 20,000 1/2" NPT 1/2" NPT 1/4" NPT 10 40 6.73 3.5 3
      PRC-300-N-HF9 Closed 850:01:00 30,000 1-1/8-12
      HF9*
      3/8" NPT 1/4" NPT 5 35 6.54 3.94 3
      PRO-050-N-025 Open 55:01:00 5,000 1/4" NPT 1/4" NPT 1/4" NPT N/A 90 3.75 1.5 1.75
      PRO-011-N-025 Open 120:01:00 11,000 1/4" NPT 1/4" NPT 1/4" NPT N/A 90 3.75 1.5 1.75
  • Ordering
    • schydraulic-valveordering
      TABLE 1 Valve Series
      PRO Pressure Release Normally Open
      PRC Pressure Release Normally Closed
      TABLE 2 Max Operating Pressure Examples
      000 Less than 100 PSI
      001 100 PSI
      010 1,000 PSI
      011 1,100 PSI
      100 10,000 PSI
      110 11,000 PSI
      TABLE 3 Seal Compound (1)
      N Buna-N
      V Viton ™
      E EPR
      T PTFE
      TABLE 4 Pressure Port Size (1)
      025 1/4" NPT
      037 3/8" NPT
      050 1/2" NPT
      100 1" NPT
      HF4 High Pressure for 60 KSI
      HF9 High Pressure for 40 KSI
      Notes: (1) Not all options are available on all valves