Shut Off Valves TST For Refrigeration 3/8 Manufacturer,Supplier and Exporter in India
Product Code : EL-RACLE-12836
Jlab Export is a leading Shut Off Valves TST For Refrigeration 3/8 Manufacturer,and suppliers in India
A shut-off valve lets a technician close one section of a refrigeration or AC circuit, so a part can be changed without losing the whole charge. This one has a 3/8 in flare connection. Its design, welding and sealing material are made for high working pressure, such as in a system charged with R410A.
Specifications
| Type | Shut-off valve for refrigeration |
| Connection | 3/8 in flare |
| Built for | High working pressure, for example R410A systems |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 4–6 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Workshop Practice with Flare Valves
A common exercise is making a leak-free flare joint on this valve. Students cut 3/8 in copper tube square with a Copper Pipe Cutter and remove the burr. After slipping on the flare nut, they form the flare with an Eccentric Flaring Tool.
The nut is then tightened onto the valve and the joint is pressure-tested with nitrogen from a Nitrogen Pressure Test Kit. Students close the valve to hold pressure in one section, watch the gauge for any drop and then open it again in steps. The same isolation drill can be repeated on the shut-off valves of a Basic Modular Refrigeration System Trainer.
Frequently Asked Questions
Why can a shut-off valve leak at its stem?
The seal around the stem wears and settles as the valve is turned over the years. A slow leak can then start there while the flare joints stay tight. Check the stem with bubble solution after the valve has been used. Keep any stem cap fitted, since it backs up that seal.
What tube does the 3/8 flare connection take?
Copper tube of 3/8 in outside diameter, given a standard refrigeration flare and joined with a matching flare nut. For bigger lines, choose the 1/2 in or 5/8 in version of this valve.
Is it suitable for R410A systems?
Yes. Its design, welding and sealing material are chosen for high working pressure, and R410A systems run at higher pressures than older refrigerants. Check that the hoses, gauges and fittings on the same line are rated for that pressure too.
How do I stop a flare joint from leaking?
Cut the tube square, remove every burr and make the flare smooth and centred. A drop of refrigeration oil on the flare face helps the nut seat. Tighten firmly but not too hard, as excess force thins or splits the flare.
Other Valves and Flare Fittings
- Shut Off Valves TST For Refrigeration 1/2
- Shut Off Valves TST For Refrigeration 5/8
- Flare Fitting Set (brass)
- Access Valve
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Last updated: 5 November 2026
