Cixi Poolke Hydraulic Pneumatic Co., Ltd. is one of the leading manufacturers and suppliers of qc pneumatic quick couplings in China. We are committed to providing high quality customized service to global clients. Please feel free to wholesale the newest qc pneumatic quick couplings from our factory.
Instrument Quick Connect Couplings – QC Series
The QC Pneumatic quick couplings from the POOLKE QC Series are designed for instrumentation, laboratory and process systems that require compact dimensions, reliable sealing and flexible shut-off configurations. The series supports one-hand push-to-connect operation for convenient handling and is available in double-end shut-off, single-end shut-off and full-flow versions to meet different fluid and gas control requirements.
The QC Series uses a leak-tight O-ring sealing design suitable for both vacuum and pressure systems. Standard catalog configurations include SUS316 stainless steel, with additional material codes available for SUS304, brass and carbon steel. Body sizes include QC4, QC6 and QC8, covering nominal sizes from 1/4" to 1/2". With pressure ratings reaching up to 20 MPa depending on body size, the QC Pneumatic quick couplings provide a versatile solution for analytical equipment, instrumentation panels and industrial process lines requiring dependable connection and easy maintenance.
Key Features
Multiple Shut-Off Configurations
Available in double-end shut-off, single-end shut-off and full-flow versions for different flow-control requirements.
One-Hand Push-to-Connect Operation
The coupling design allows convenient one-hand connection, helping simplify equipment setup and servicing.
Reliable Leak-Tight O-Ring Seal
The O-ring sealing structure is designed for dependable use in both vacuum and pressure systems.
Multiple Material Options
Available material codes include SUS316, SUS304, brass and carbon steel to support different corrosion-resistance and application requirements.
Compact Instrumentation Sizes
QC4, QC6 and QC8 body sizes cover 1/4", 3/8" and 1/2" connections for compact instrument and process installations.
Flexible End Connections
Available with NPT and R threads, hose connections, tube connections and bulkhead tube configurations for versatile system integration.
Applications
The QC Pneumatic quick couplings are suitable for:
- Instrumentation systems
- Laboratory equipment
- Analytical devices
- Process control panels
- Vacuum systems
- Industrial gas and fluid lines
Technical Overview
| Series | QC | Shut-Off Options | Double-End / Single-End / Full-Flow |
| Type | Instrument Quick Connect Couplings | Body Sizes | QC4 / QC6 / QC8 |
| Standard Material | SUS316 Stainless Steel | Rated Pressure | QC4 20 MPa / QC6 10 MPa / QC8 5 MPa |
| Available Materials | SUS316 / SUS304 / Brass / Carbon Steel | Max. Rated Flow | QC4 15 L/min / QC6 20 L/min / QC8 35 L/min |
| Seal Material | FKM | Temperature Range | -20°C to +180°C |
| Operation | One-Hand Push-to-Connect |
Interchangeability
Cross-reference examples include:
Swagelok QC Series Type
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