Two brass quick-connect air hose fittings, a knurled coupler with balls and a matching plug, on a white background.
Nominal Diameter 4.3mm

343 Series | Double Shut Off Quick Release Couplings & Plugs

343 series is a small double shut off coupling conforming to ISO 7241-1 SERIES B, offering above average flow for liquid gaseous media.

Related Series

Single Shut Off CouplingsSingle Shut Off CouplingsVersion not available
Double Shut Off CouplingsDouble Shut Off CouplingsThis Series (343)
Straight Through CouplingsStraight Through CouplingsVersion not available
Safety CouplingsSafety CouplingsVersion not available
Technical drawing of a multi-step connector with a top boss and bottom base; shows overall height 19 and diameters Ø10.9, Ø10.1, and Ø12.1, with the number 343 on the base.

Female Thread BSPP Coupling

Part Number Length Diameter Thread
343CDFP18BNX 49mm 25mm 1/8"

Female Thread BSPP Plug

Part Number Length Thread
343PDFP18BNX 30mm 1/8"

Coupling Cap

Part Number
343CC18

Plug Cap

Part Number
343PC18

Advantages

  • Twin handed operation
  • ISO-B Series

Technical Specifications

Coupling Specifications

Back Body: Brass (MS 58)

Sleeve: Brass (MS 58)

Valve Body: Brass (MS 58) Nickel Plated

Spring: Stainless Steel 301

Locking Balls: Stainless Steel 420

Plug Specifications

Plug: Brass (MS 58)

Valve: Brass (MS 58)

Spring: Brass (MS 58)

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

210 Bar

Maximum static working pressure with safety factor 4:1

Interchangeability

Interchangeable With:
  • Danfoss Hansen HK
  • Parker-Rectus 71 KB
  • Danfoss Hansen HK1 ISO-B
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