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Tamper-Proof Products

Pisco and All Air offer a solution to the most common cause of problems in pneumatic systems – operator error.

The P-Set Series of Tamper-Proof products is designed and engineered with a tamper-proof design that prevents unauthorized adjustments to pressure settings, thereby ensuring optimal safety and reliability. Their compact construction facilitates installation in confined spaces, making them particularly suitable for challenging environments.

The fixed pressure and constant flow configuration guarantees consistent performance while significantly reducing the risk of user error, ultimately enhancing operational safety and eliminating downtime. Operating at proper pressures ensures optimal functionality and longevity for all of your downstream equipment.

Product Lineup

Pre-Set Pressure Regulator – RVFUP Series

Pisco RVFUP Series Pressure Reducing Valve

The pressure setting on the RVFUP Series Pressure Reducing Valve is factory set and cannot be changed or adjusted, which provides operators with safe and continuous performance. The pre-set tamper-proof regulator provides a stable pressure point, even when the inlet pressure fluctuates. For applications that require tamper-proofing and/or where no pressure adjustment is needed.

No Adjustment Knob = Tamper-Proof!

Pisco RVFUP Series Pressure Reducing Valve Size Comparison

Compact & Light-Weight

RVFUP Series is 67% smaller than a standard regulator (see above).

Length: *2.34 to 3 inches
Weight: 0.85 to 1.2oz (*depending on size of tubing O.D)

Pisco RVFUP Series Pressure Reducing Valve Reverse Flow

Free Reverse Flow Function

RVFUP Series can be used as a check regulator by installing it between a solenoid valve and actuator.
If the pressure of inlet side is lower than the outlet side, air flows to the inlet side.

  • Fluid Medium: Air
  • Preset Pressure:~1.0MPa
  • Operating Temperature Range: 0~60℃ (No freezing)
  • Pressure Tolerance: ±0.025MPa (When preset pressure+0.3MPa is supplied)
  • Port Size/Tube Diameter (inch):  5/32″, 1/4″, 5/16″, 3/8″
  • Port Size/Tube Diameter (mm):  4, 6, 8, 10

Constant Flow Speed Controller – JKC Series & JKL Series

Pisco Constant Flow Speed Controller - JKC Series & JKL Series

Perfect for mass-produced specialty machinery, as it enables speed control without adjustments. Selectable orifice size from 0.1 mm to 2.0 mm.

No Adjustment Knob = Tamper-Proof!

Available in:
Straight – JKC Series
Elbow – JKL Series

  • Fluid Medium: Air
  • Operating Pressure Range: 0.1~0.9MPa
  • Check Valve Opening Pressure: 0.05MPa
  • Operating Temperature Range: 0~60℃ (No freezing)
  • Port Size/Tube Diameter (inch):  5/32″, 1/4″
  • Port Size/Tube Diameter (mm):  4, 6, 8
  • Thread Size (Taper Pipe Male):  R1/8, R1/4
  • Thread Size (NPT): NPT1/8, NPT1/4

Slot-Head Speed Controller – JSDC Series & JSDS Series

Pisco Slot-Head Speed Controller - JSDC Series & JSDS Series

Prevents unintended manual adjustments. For applications that need occasional speed adjustments. Screwdriver required for adjustment.

Compact – Approx. 2/3 height of the conventional Speed Controller.

Available in:
Elbow – JSDC Series
Free Rotating – JSDS Series

  • Fluid Medium: Air
  • Operating Pressure Range: 0.1~0.9MPa
  • Check Valve Opening Pressure: 0.05MPa
  • Operating Temperature Range: 0~60℃ (No freezing)
  • Port Size/Tube Diameter (inch): 1/8″, 5/32″, 3/16″, 1/4″, 5/16″, 3/8″, 1/2″
  • Port Size/Tube Diameter (mm):  4, 6, 8, 10, 12
  • Thread Size (Taper Pipe Male): R1/8, R1/4, R3/8, R1/2
  • Thread Size (NPT): NPT1/8, NPT1/4, NPT3/8, NPT1/2
  • Thread Size (Metric Male ): M3x0.5, M5x0.8
  • Thread Size (UNF): 10-32UNF

Fixed Orifice Joint – PC Series & PL Series

Pisco Fixed Orifice Joint - PC Series & PL Series

Push-in fitting type fixed orifice joint to control air flow.
Selectable orifice size from 0.1 to 2.0 mm.

No Adjustment Knob = Tamper-Proof!

Available in:
Straight – PC Series
Straight Mini – PC Mini Series
Elbow – PL Series
Elbow Mini – PL Mini Series

  • Fluid Medium: Air
  • Max Operating Pressure: 1.0MPa
  • Max Vacuum: -100kPa
  • Operating Temperature Range: 0~60℃ (No freezing)
  • Port Size/Tube Diameter (inch): 5/32″, 1/4″
  • Port Size/Tube Diameter (mm):  4, 6, 8
  • Thread Size (Taper Pipe Male): R1/8
  • Thread Size (NPT): NPT1/8
  • Thread Size (Metric Male ): M5x0.8
  • Thread Size (UNF): 10-32UNF

Lockout for Ball Valve

Pisco Lockout for Ball Valve

Prevents unintentional operation of the handles of the 20 and 60 series Ball Valves. The direction of the handle is visible from the exterior.