Two metal compression fittings with hexagonal nuts and knurled collar on a white background.
Nominal Diameter 7.4mm

373 Series | Safety Lock Double Shut Off Quick Release Couplings & Plugs

The 373 Kee series coupling is a safety lock system for use with breathing air hose line applications. To disconnect, the plug must first be pushed further into the coupling before it can be unlocked. This prevents unintentional disconnection.

Technical drawing of a stepped cylindrical part with overall height 20 units; diameters 10, 11.95, 9.75, and 10.5 units; base shows '373'.

Male Thread BSPT Coupling

Part Number Length Diameter Thread
373CZMT12BNN 66mm 23mm 1/2"
373CZMT14BNN 65mm 23mm 1/4"
373CZMT38BNN 64mm 23mm 3/8"

Female Thread BSPP Coupling

Part Number Length Diameter Thread
373CZFP14BNN 60mm 23mm 1/4"
373CZFP38BNN 59mm 23mm 3/8"

Hosetail Coupling

Part Number Length Diameter Hosetail
373CZHT10BNN 78mm 23mm 10mm
373CZHT13BNN 78mm 23mm 13mm
373CZHT06BNN 78mm 23mm 6mm
373CZHT09BNN 78mm 23mm 9mm

Male Thread BSPT Plug

Part Number Length Thread
373PZMT14BNN 46mm 1/4"
373PZMT38BNN 46mm 3/8"

Female Thread BSPP Plug

Part Number Thread
373PZFP14BNN 4" 46
373PZFP38BNN 8" 46

Hosetail Plug

Part Number Length Hosetail
373PZHT13BNN 68mm 13mm
373PZHT06BNN 68mm 6mm
373PZHT09BNN 68mm 9mm

Advantages

  • Push to connect
  • Safety lock to release

Technical Specifications

Coupling Specifications

Back Body: Brass (MS 58) Nickel Plated

Valve Body: Brass (MS 58) Nickel Plated

Sleeve: Brass (MS 58) Nickel Plated

Spring: Stainless Steel 301

Locking Balls: Stainless Steel 301

Plug Specifications

Plug Body: Brass (MS 58) Nickel Plated

Valve: Brass (MS 58) Nickel Plated

Spring: Stainless Steel 301

Seal: NBR

Working Limits

Working Temperature

-20°C to +100°C (NBR)

-40°C to +130°C (EPDM)

-15°C to +200°C (Viton)

Depending on Medium

Working Pressure

35 Bar

Maximum static working pressure with safety factor 4:1

Interchangeability

Interchangeable With:
  • CEJN 348
  • Parker-Rectus 25 KD
Download Product Information