The Fastwarm M Profile Press Male Swivel Coupling (Straight Union MI) combines versatility and reliability in one compact fitting. Featuring a press-fit connection on one side and a male union thread on the other, it’s perfect for connecting valves, manifolds, pumps, or other components where easy disassembly may be required in the future.
Designed for professional plumbing and heating systems, this straight union allows secure, serviceable connections without compromising performance. The flame-free press-fit improves safety and reduces installation time, while the male union ensures flexibility for maintenance and system adjustments.
Key Benefits & Features
- Press-to-male-union connection — ideal for valves, manifolds, pumps, and other components
- Compact and serviceable design allows easy disassembly when required
- Solid copper and brass construction for long-lasting durability
- EPDM sealed to ensure a reliable, leak-proof joint
- Available in 15–54mm sizes to suit a wide range of applications
- Maintains full electrical continuity across the joint
- Flame-free press fitting — no soldering or hot works required
- WRAS & DVGW approved for full compliance and peace of mind
- Pressure rated to 16 bar and suitable for temperatures from -24°C to 110°C
- Perfect for flexible, serviceable joints where maintenance or system adjustments may be needed
Choose the Fastwarm Straight Union MI for a professional-grade solution that delivers secure, flexible, and easily maintainable connections in modern plumbing and heating systems.
| CODE | SIZE | D1 | L | L1 | L2 | M |
|---|---|---|---|---|---|---|
| FW-KM120-S1512M | 15X1/2 | 15 | 62 | 22 | 14 | R1/2 |
| FW-KM120-S2234M | 22X3/4 | 22 | 65.5 | 24 | 15.5 | R3/4 |
| FW-KM120-S2811M | 28X1 | 28 | 70.5 | 25.5 | 18 | R1 |
Delivery Options
2-3 working day delivery
Next working day
Next working day AM delivery
Saturday Delivery
Delivery cut off times
Our daily cut-off time for dispatch is 4:30pm Monday–Thursday and 4:00pm on Fridays. Orders placed before the cut-off time will be dispatched for next working day delivery (if this option is selected). Orders placed after 4:00pm on Friday will be dispatched on Monday for Tuesday delivery.
Bank holidays may affect these delivery times, so please contact our team if unsure on 01268 744 479
Other Delivery Options
Next working day AM delivery and Saturday Delivery services are available, but orders must be placed before the relevant cut-off times.
NOTE: All orders placed on a Friday will be delivered on the following Monday (unless its a bank holiday), unless a Saturday Delivery service is selected and paid for before the 4:00pm Friday cut-off.
Delivery outside the UK
Delivery outside mainland UK may be arranged by prior agreement. You will be advised of the delivery charge before dispatch, at which point you can decide whether you wish to proceed with your order.
Important: Our deliveries rely on third party couriers, so, whilst we make every effort to deliver your order on the specified date and time, unfortunately there may be occasions when this will not be possible due to external influences. Due to this we strongly recommend you ensure you have received your order before any tradespeople/builders are scheduled to commence work.
Still Unsure? Talk to an expert
If you need any guidance or further information our highly experienced team are on hand to help.
Get in touch using our contact form or give us a call on 01268 744 479.
