Self-locking One-Way Shutoff Quick Couplings Female Socket
SF-SO
One-Hand Operation Quick Coupling, One-Hand Operation Quick Coupler, A Quick Release Coupling
Our Self-Locking one-way shutoffQuick Coupling – Female Socket is designed with safety as the top priority during connection and disconnection. Commonly used in air compressor systems, this coupling features a Japanese-style design and is fully compatible with all Nitto one-way quick plugs.
The self-locking mechanism effectively prevents accidental disconnection caused by impact or vibration, significantly enhancing operational safety. This secure coupling solution ensures user protection by minimizing the risk of sudden air release or hose detachment.
We strongly recommend the use of this safety female socket in systems utilizing male connectors, especially in environments where reliability and safety are critical.
Crafted from stainless steel, this component boasts a range of material attributes, including rust resistance, corrosion resistance, durability, and impressive toughness, among other qualities.
Features
- Safe and automatic locking mechanism.
- Labor-saving.
- Easy Installation and disassembly.
- Patent protection.
Technical Data
Working Pressure: 30kgf/cm²
Material: SUS304
Dimension

Specification
SF-SO Safety One Touch Quick Couplings Female SocketPart No | Thread Size | Dimensions | ![]() |
||
---|---|---|---|---|---|
P-PT | Ø E | Ø D | L | ||
SF2-SO | 1/4" | 10 | 28 | 60.5 | 22 |
SF3-SO | 3/8" | 10 | 28 | 61.5 | 22 |
SF4-SO | 1/2" | 10 | 28 | 64.5 | 27 |
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Self-locking One-Way Shutoff Quick Couplings Female Socket (SF-SO ) – CHIBIN Machine
Since 1980 in Taiwan, CHIBIN Machine makes Self-locking One-Way Shutoff Quick Couplings Female Socket —compression, push-in pneumatic, hydraulic, quick couplings, and precision nozzle and needle valves for medical and semiconductor use.
Our fittings are ISO-certified and TTQS-awarded, with MIL-STD-105E quality checks. We stock 10,000+ standard parts and offer OEM/ODM custom runs up to 3,000 pcs.
With advanced CNC manufacturing and 40+ years of experience, CHIBIN Machine meets tight specs for surface finish, thread standards, and leak-tight testing. Get a fast quote today.