Two metal compression fittings with blue seals, a larger coupling on the left and a male plug on the right.
Nominal Diameter 5.5mm

057 Series | Single Shut Off Quick Release Couplings & Plugs

UK standard profile, widely used  in the compressed air market, with above average flow for the nominal bore.

Technical drawing of a multi‑section cylindrical part with stepped diameters and a bottom '057' label. Overall height 31.9 units; diameters: top Ø7.8, middle Ø10.2, and lower sections Ø7.8/Ø10.2 with a flange in the middle.

Male Thread BSPT Coupling

Part Number Thread Length Diameter
057CVMT14SNN 1/4" 63mm 23mm
057CVMT38SNN 3/8" 63mm 23mm
057CVMT12SNN 1/2" 63mm 23mm

Female Thread BSPP Coupling

Part Number Thread Length Diameter
057CVFP14SNN 1/4" 63mm 23mm
057CVFP38SNN 3/8" 63mm 23mm
057CVFP12SNN 1/2" 63mm 23mm

Hosetail Coupling

Part Number Hosetail Length Diameter
057CVHT06SNN 6mm 74mm 23mm
057CVHT08SNN 8mm 74mm 23mm
057CVHT09SNN 9mm 74mm 23mm
057CVHT10SNN 10mm 74mm 23mm
057CVHT13SNN 13mm 74mm 23mm

Male Thread BSPT Plug

Part Number Thread Length
057PNMT14SXN 1/4" 49mm
057PNMT38SXN 3/8" 49mm
057PNMT12SXN 1/2" 54mm

Female Thread BSPP Plug

Part Number Thread Length
057PNFP14SXN 1/4" 47mm
057PNFP18SXN 1/8" 45mm
057PNFP38SXN 3/8" 47mm
057PNFP12SXN 1/2" 48mm

Hosetail Plug

Part Number Hosetail Length
057PNHT06SXN 6mm 58mm
057PNHT08SXN 8mm 58mm
057PNHT10SXN 10mm 58mm
057PNHT13SXN 13mm 58mm

Advantages

  • Single handed operation
  • UK Standard Profile
  • Flange in front of coupling - prevents accidental disconnection

Technical Specifications

Coupling Specifications

Back Body: Brass (MS 58) Nickel Plated
Valve Body: Steel Nickel Plated
Sleeve: Steel Nickel Plated
Spring: Stainless Steel 301
Locking Ring: Stainless Steel 301
Locking Balls: Stainless Steel 301

Plug Specifications

Plug Body: Steel Nickel Plated

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:
  • PCL Standard
  • Parker-Rectus 19
  • Maxsafe C19
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