This external thread needle valve is built for high-pressure shut-off and stable adjustment up to 32 MPa, with an anti-misoperation locking structure that stops unauthorized personnel from changing the setting. The body is integrally forged from 304/316 stainless steel, and the stem is surface-hardened by nitriding to above HV700 with a multi-turn V-shaped sealing structure, giving it strong anti-vibration and pressure resistance. Each body passes ultrasonic non-destructive testing, which rules out forging defects such as sand holes and cracks before the valve ships. Thread sizes cover M14x1.5 to M27x2 on ISO/DIN standards, and the design supports service temperatures from -20 to 200 degrees Celsius.
Buyers of this external thread needle valve usually face one of two concerns: keeping the setting locked in a vibrating machine environment, or matching a non-standard port. The locking mechanism and the nitrided stem are the parts that answer the first concern, and we test the assembly under vibration before shipment. For the second, drawing-based production lets us supply ISO/DIN threads as standard and modify the thread position or body length for European and American engineering equipment, so the valve does not need an adapter on site.
Specifications
|
Parameter |
Specification |
|
Material |
304/316 stainless steel, integrally forged |
|
Model |
J23W |
|
Connection |
External thread, M14x1.5 - M27x2 |
|
Thread Standard |
ISO/DIN |
|
Pressure Rating |
Up to 32 MPa |
|
Valve Stem |
Nitrided, hardness > HV700, V-shaped seal |
|
Locking |
Anti-misoperation structure |
|
NDT |
Ultrasonic tested |
|
Service Temperature |
-20 to 200 °C |
Applications
- High-pressure hydraulic pump stations: the locking structure keeps the flow setting unchanged while pumps cycle and lines pulse.
- Heavy machinery hydraulic systems: the vibration-resistant stem and forged body survive the high-frequency shock of excavators and cranes.
- Engineering equipment piping: ISO/DIN threads match imported European and American machines without thread adapters.
Customization
Thread size within M14x1.5 to M27x2, stem seal configuration and low- or high-temperature service versions can be confirmed from drawings or samples. Body marking and OEM/ODM production are supported.
Packaging & Transportation
Moisture-proof export cartons with shock-absorbing cushioning protect each valve; wooden crates are available for bulk orders. We support EXW, FOB, CIF, CFR, DAP and DDP.
FAQ
Q: Can you manufacture based on our technical drawings or prototypes?
A: Certainly, we can manufacture based on your technical drawings or prototypes.
Q: What is the delivery time for custom-made products?
A: The production cycle for custom-made products is usually 30-60 working days, depending on technical complexity, craftsmanship requirements 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: How do you control product quality?
A: We implement full-process closed-loop quality control with 100% testing from source to factory exit, supported by system certifications and traceable data.
Q: Do you provide a warranty? If so, for how long?
A: All our products come with a one-year warranty.
Q: Do you accept third-party inspections?
A: We support and welcome third-party inspections to ensure the products fully meet your quality requirements.
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