Pneumatic coupler QWS

male-femalemodular

Product summary
Single operation can (un)couple two circuits.

Key features

• The plug can be uncoupled simply by pressing a lock plate.
• Shut-off valve: the socket shuts off air flow upon plug removal.
• Plug available in three outlet directions (choose right or left outlet; standard orientation is the socket's lock plate facing upwards).
• Designed to prevent incorrect circuit connections: connections require matching release-ring colors; connection cannot be made unless release-rings are properly oriented.

Materials

• Resin: PBT — used for the main resin parts; a standard resin material ideal for general environments.
• Metal: Brass with electroless nickel plating — used for main metal parts.
• Metal: Aluminum — used for main metal parts.
• Seal rubber: NBR — used for seal rubber; generally used as sealing material but inferior in ozone resistance.

Specifications (table)
Fluid medium: Air
Operating pressure range: 0.1 to 1.0 MPa
Operating temperature range: 0 to 60°C (No freezing)

Port size
Tube dia.: φ4, φ6, φ8

Construction
Modular plug-and-socket coupling with integrated shut-off valve in the socket and release-ring orientation mechanism to prevent misconnection. Main structural parts use PBT resin and metal parts in brass (electroless nickel plated) or aluminum.

Safety / Handling

• Do not use machinery to (un)couple the plug and socket — risk of damaging components.
• Exercise caution when uncoupling while pressurized; internal pressure may cause the plug to eject.
• Push the plug fully into the socket until it seats and lock engages; after coupling, pull moderately to verify secure connection.
• Use both hands when (un)coupling to maintain control and avoid accidental plug ejection.
• Fluid leakage may occur under specific conditions (e.g., low temperature environments, ultra-low pressures).
• Avoid applying stress (pulling, twisting, bending) to the coupling; excessive force may cause leakage.
• When uncoupling, a popping sound may occur due to internal pressure.

Additional technical notes

• Durability: standard PISCO push-in fittings — fixed durability test: 30 million cycles; sliding movement (dynamic) test: 5 million cycles (test conditions specified by PISCO: applying and releasing 0.7 MPa at 2 cycles/sec).
• Maximum working pressure for standard PISCO push-in fittings: 1.0 MPa (check model specifications as operating pressure may change with temperature).
• Use with water: Some models allow water (tap water, pure water, extra-pure water) under conditions — control surge pressure under maximum operating pressure and consider Insert-ring for long-term water use to prevent tube shrinkage.

Technical specifications

• Commercial name: Twin Coupling
• Brand: PISCO
• Fluid medium: Air
• Operating pressure range: 0.1 to 1.0 MPa
• Operating temperature range: 0 to 60°C (No freezing)
• Tube diameters available: φ4, φ6, φ8
• Main resin material: PBT
• Main metal materials: Brass (electroless nickel plating), Aluminum
• Seal material: NBR