REF #1085
Bayonet Range
Bayonet instant air couplings for compressed air systems, compatible with Schrader Standard, Cejn 399, Rectus 17 and Broomwide. The bayonet coupling uses a quarter-turn locking mechanism to make and break the air connection quickly, without tools. This range is interchangeable with those standards, so these adaptors and couplings will connect with any Schrader, Cejn, Rectus or Broomwide bayonet equipment already installed. No need to replace existing fittings throughout the system.
Both swivel and fixed adaptors are available. Swivel versions allow the hose to rotate at the coupling point, reducing torsional stress. The range covers male and female BSP thread sizes for connection to air lines, hose tails, and tool inlets. Confirm the existing coupling standard before ordering to ensure full compatibility.
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REF #1086
Instant Air Swivel Adaptors - Steel
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£20.30 INC VAT
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REF #1084
Instant Air Couplings - Steel
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£17.56 INC VAT
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REF #1083
Instant Air Swivel Adaptors - Brass
£37.70 INC VAT
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REF #1081
Instant Air Couplings - Brass
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£39.06 INC VAT
£32.55 EXC VAT
Understanding bayonet air couplings
Bayonet couplings connect and disconnect with a quarter-turn twist rather than the push-and-release mechanism used in standard quick-release air couplings. This makes them fast to operate under working pressure and positive to lock, with less ambiguity about whether the coupling is fully engaged than with a straight push-in type.
The key advantage of this range is cross-brand compatibility. Bayonet-style couplings are shared across several major coupling manufacturers: Schrader Standard, Cejn 399, Rectus 17 and Broomwide all use the same bayonet geometry. This means you can mix and match within those standards without replacing every coupling in a system when one brand is discontinued or unavailable.
Swivel adaptors are worth specifying wherever the hose needs to rotate during use. On a long compressed air run, torque builds in the hose under pressure; a swivel adaptor at the hose end releases that torque and prevents the hose from twisting back and fatiguing at the fitting. Fixed adaptors are the right choice for static connection points.
Frequently Asked Questions
What is a bayonet air coupling?
A bayonet air coupling uses a quarter-turn twist mechanism to connect and lock the male plug into the female socket, unlike the straight push-in action of standard quick-release couplings. The bayonet style is faster to engage positively and is less likely to be partially connected under pressure.
Is the bayonet range compatible with Schrader couplings?
Yes. This range is designed to be interchangeable with Schrader Standard, Cejn 399, Rectus 17 and Broomwide bayonet couplings. If your existing system uses any of these standards, you can replace worn or damaged couplings from this range without changing the rest of the system.
What is the difference between a bayonet coupling and a quick-release coupling?
Standard quick-release couplings connect by pushing the male plug straight into the female socket. Bayonet couplings connect by insertion followed by a quarter-turn twist to lock. The bayonet mechanism gives a more positive lock and is less prone to accidental disconnection than a straight push-in design.
Are swivel and fixed adaptors interchangeable in the bayonet range?
Swivel and fixed adaptors both use the same coupling connection at the air line end, so they can be mixed within the same system. They are not interchangeable in function: swivel adaptors allow hose rotation, fixed adaptors do not. Use swivel versions where the hose needs to rotate during work.
What BSP thread sizes are available in the bayonet range?
The bayonet range is available with male and female BSP threads. Common sizes for compressed air systems are 1/4 BSP and 3/8 BSP. Check the thread size of the port on your valve, regulator or tool before ordering.