This socket welding needle valve connects to instrument nozzles and small-diameter lines through a socket weld end with a built-in positioning groove, holding pipe coaxiality deviation to within 0.02 mm. The socket is precision-turned with insertion depth tolerance of plus or minus 0.1 mm, so the tube seats consistently before welding. Sealing performance meets the API 598 industrial-grade standard, and each body passes magnetic particle inspection to rule out surface defects. Sized from DN3 to DN20, the valve suits narrow cabinets and instrument bays where precise docking matters more than pipe size.
A socket weld joint only seals well if the tube sits at the right depth and square to the socket, and that is decided before welding, not after. Our manufacturing value is the socket itself: the positioning groove and the plus-or-minus 0.1 mm depth tolerance are machined into the body, so the welder has a physical reference instead of guessing the insertion. For small-diameter and non-standard instrument connections, we adjust the socket bore against the customer's tube specification and magnetic-particle check the finished body, which keeps field weld defects low.
Specifications
|
Parameter |
Specification |
|
Material |
304/316 stainless steel |
|
Model |
J61W |
|
Connection |
Socket weld |
|
Size Range |
DN3 - DN20 |
|
Coaxiality |
Deviation ≤ 0.02 mm |
|
Socket Depth |
Tolerance ± 0.1 mm |
|
Sealing Standard |
API 598 |
|
Inspection |
Magnetic particle tested |
|
Custom Options |
Small-diameter non-standard sockets |
Applications
- Instrument nozzles: the positioning groove keeps the valve square to the nozzle so the weld bead is uniform around the joint.
- Narrow control cabinets: socket weld assembly needs less clearance than threaded wrenches, and small sizes fit tight bays.
- Sampling lines: the consistent socket depth produces repeatable joints across many identical sampling points.
Customization
Socket bore, insertion depth and small-diameter non-standard sizes can be produced from drawings or samples. OEM/ODM production is supported.
Packaging & Transportation
Moisture-proof export cartons with shock-absorbing cushioning; wooden crates for bulk orders. We support EXW, FOB, CIF, CFR, DAP and DDP.
FAQ
Q: What is the delivery time for standard products?
A: The production cycle for standard products is usually 15-30 working days, depending on models, specifications and current production schedules.
Q: Can you provide a prototype or sample before mass production?
A: Yes, we can provide samples before mass production. Samples are not free; they are charged.
Q: What is your monthly production capacity?
A: Our monthly capacity is approximately 100,000 units, adjusted dynamically based on product type, specifications and degree of customization.
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