Frequently Asked Questions
Conex Compression Fittings
How do you connect different sized copper tubes?
| Tube Dimensions | Answer | |
|---|---|---|
| MM | Inches | |
| 12 | 3/8 | These are directly compatible |
| 22 | 3/4 | Use a 22mm coupler (301) with a 3/4" capnut compression ring |
| 28 | 1 | Use a 28mm capnut with a 1" compression ring |
| 35 | 1 1/4 | Use a 35mm capnut with a 1 1/4" compression ring |
| 42 | 1 1/2 | Use a S68S compression ring |
| 54 | 2 | These are directly compatible |
| 67 | 2 1/2 | These are directly compatible |
| 76 | 3 | Use a Conex Compression 301 IM Coupler |
| 108 | 4 | Use an S68 108 x 4" compression ring |
What size are the studs on the 76mm Conex compression?
They are 3/8" BSW
What is the maximum pressure for compressed air that can be used with Conex Compression fittings?
Maximum pressure is 7 bar between 8mm and 28mm
What is the maximum working pressure for Conex Compression fittings?
Maximum pressure is 16 bar at 30°C
Which PTFE tape can be used for gas services?
Use high-density tape manufactured to EN715-3
What is the maximum working temperature for Conex steel braided and nylon flexible hoses?
Maximum temperature is 70°C
Conex Valves
What is the maximum temperature and pressure Conex Gate Valves will operate at?
Maximum of 16 bar at 30°C
What is the maximum rating of Conex Lever Ball Valves?
Maximum of 16 bar at 30°C
Which Conex Lever Ball Valve can be used for Gas Services?
Only use Conex 1204G with a yellow handle
What is the maximum pressure for Conex Stop Valves?
Maximum pressure is 10 bar at 65°C
What is the maximum working temperature for Conex Brass Float Valves?
Maximum temperature is 65°C
Conex End Feed Fittings
Which solder should be used for End feed fittings?
Use lead free solder, either 97% tin, 3% copper or 99% tin, 1% copper
Press fittings
Which press jaw/press collar profiles can be used with Conex >B<Press Fittings?
12mm to 54mm can only be pressed using jaws with a 'V' profile.
64mm to 108mm can only be pressed using collars with an 'M' profile
Miscellaneous
Which Conex fittings provide electrical continuity?
Conex Compression, Conex Triflow Solder Ring, Conex Delcop End Feed, Conex Cuprofit (S Codes) & Conex >B< Press
To which standard are Conex BSP threads manufactured to?
Conex Parallel threads are to ISO 228
Conex Taper threads are manufactured to ISO 7
Which sealant do you recommend for potable water and gas fittings?
Use sealant Loctite 577
Which Conex products are covered by the ROHS Regulations?
A statement regarding the ROHS (2002/95/EEC) regulations can be obtained upon request from IBP
IBP Conex Limited Registered office: Whitehall Road, Tipton, West Midlands, DY4 7JU, UK