Repair Coupling
A robust stainless steel coupling for the rapid connection and repair of pipelines without welding. Interchangeable EPDM, NBR, Viton or Silicone gaskets suit water, air, fuel, gas and chemicals; the coupling accommodates deflection, movement, diameter variation and misalignment at pressures up to 24 bar.
Construction & Materials
| No | Part | Material |
|---|---|---|
| 1 | Gasket | EPDM, NBR, Viton or Silicone |
| 2 | Body | Stainless steel AISI 304 or AISI 316 |
| 3 | Bolt | Stainless steel AISI 304, AISI 316 or 12.9 steel |
| 4 | Washer | Brass |
| 5 | Armour Sheet | Stainless steel AISI 304 or AISI 316 |
| 6 | Milbar | Stainless steel AISI 304, AISI 316 or AISI 1040 |
Repair & Connection Capabilities
Sealing Gasket Options
Water, air and some chemicals.
-20 °C to +100 °CFuel, gas and some hydrocarbons.
-20 °C to +80 °CWide chemical resistance.
-40 °C to +220 °CDrinking and domestic water.
-55 °C to +200 °CDimensions
Selected ranges shown — the coupling covers pipe outside diameters 148–1300 mm in 12 mm windows, all 200 mm wide.
| Range (mm) | Width (mm) | Pressure (bar) | Pressure (psi) | Milbar Ø (mm) | Bolts | Torque (N·m) | Torque (lbf·ft) |
|---|---|---|---|---|---|---|---|
| 148–160 | 200 | 24 | 348 | 22 | M12×6 | 40 | 30 |
| 178–190 | 200 | 24 | 348 | 22 | M12×6 | 45 | 33 |
| 228–240 | 200 | 16 | 232 | 22 | M12×6 | 50 | 37 |
| 288–300 | 200 | 16 | 232 | 22 | M12×6 | 50 | 37 |
| 358–370 | 200 | 16 | 232 | 24 | M16×6 | 60 | 44 |
| 428–440 | 200 | 12 | 174 | 24 | M16×6 | 65 | 48 |
| 508–520 | 200 | 12 | 174 | 24 | M16×6 | 70 | 52 |
| 598–610 | 200 | 12 | 174 | 24 | M16×6 | 75 | 55 |
| 678–690 | 200 | 10 | 145 | 24 | M16×6 | 80 | 59 |
| 708–720 | 200 | 10 | 145 | 30 | M20×6 | 85 | 63 |
| 858–870 | 200 | 10 | 145 | 30 | M20×6 | 120 | 89 |
| 998–1010 | 200 | 10 | 145 | 30 | M20×6 | 135 | 100 |
| 1148–1160 | 200 | 10 | 145 | 30 | M20×6 | 150 | 111 |
| 1288–1300 | 200 | 10 | 145 | 30 | M20×6 | 165 | 122 |
Full chart with every range is in the datasheet download. Custom and oversized diameters on request.
Datasheet & Drawings
The complete specification with the full 148–1300 mm dimension chart, torque values and gasket guide. A certified drawing for your exact configuration follows with the quotation.
EN 10204 3.1 material certificates are supplied with your shipment.
How to Order
Example order line
REPAIR COUPLING · OD 208–220 mm
W 200 · 24 bar · EPDM
BODY AISI 304 · MTC EN 10204 3.1Also in This Range
Frequently Asked Questions
What is a pipe repair coupling?
A repair coupling - also called a repair clamp - is a stainless steel band wrapped around a damaged or plain-ended pipe and bolted closed over an elastomer gasket. It seals leaks and joins pipe without welding, threading or cutting out the damaged section, and suits water, air, fuel, gas and chemical lines.
How do I select the right repair coupling size?
Measure the pipe outside diameter and pick the range that contains it - each coupling covers a 12 mm window, e.g. OD 219 mm falls in the 208-220 range. Sizes run from 148 mm to 1300 mm, and custom or oversized diameters are available on request.
What pressure can the coupling hold?
Up to 24 bar (348 psi) for the smallest ranges, stepping to 16, 12 and 10 bar as diameter grows - the dimension chart lists the rating for every range.
Which gasket should I choose for my medium?
EPDM for water, air and some chemicals (-20 to +100 C); NBR for fuel, gas and hydrocarbons (-20 to +80 C); Viton for wide chemical resistance (-40 to +220 C); Silicone for drinking and domestic water (-55 to +200 C).
Does installation require welding or special tools?
No welding at all. The coupling wraps around the pipe and tightens with standard bolts to the torque in the chart (40-165 N.m depending on size), which is what makes it fast for both new connections and live repairs.
Can it join pipes that are misaligned or of different diameters?
Yes - it accommodates misalignment, gaps between pipe ends, angular deflection, axial movement, small diameter differences and crack repair on a continuous pipe.
What materials and certificates are supplied?
Body and armour sheet in stainless AISI 304 or 316, bolts in AISI 304/316 or 12.9 steel, brass washers. EN 10204 3.1 material certificates are supplied, and YTM Pipe operates an ISO 9001:2015 quality system.
Designed for demanding pipe repairs.
Send your pipe outside diameter, medium and quantity — and our team returns the right coupling size, gasket selection, pricing and lead time.
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