This multi function gauge valve combines pressure tap-off, shut-off and optional bleed in a single instrument valve, built to the explosion-proof requirements of GB3836.1 with an Ex d II CT4 flameproof structure. The body is machined from 304/316 stainless steel and passes a flameproof pressure test at 1.5 times the rated working pressure, so it is approved for hazardous areas where standard gauge valves cannot be installed. The pressure range covers 0.6 to 40 MPa, and the compact body keeps the instrument connection within the normal gauge footprint.
When a gauge tap goes into a hazardous area, the buyer is not just buying a valve but a certified component for a classified zone. Our production therefore treats the flameproof structure as part of the body itself: the flameproof joint is machined to the Ex d geometry and pressure-tested on every batch, so the delivered valve matches the zone classification documented in the specification. Where the site requires a different explosion-proof rating, we can adapt the structure and confirm the final pressure range against the project requirements.
Specifications
|
Parameter |
Specification |
|
Material |
304/316 stainless steel |
|
Model |
GJ123 |
|
Function |
Tap-off + shut-off + optional bleed |
|
Explosion-proof |
Ex d II CT4, GB3836.1 |
|
Pressure Test |
1.5 times rated working pressure |
|
Pressure Range |
0.6 - 40 MPa |
|
Body |
Compact instrument design |
|
Custom Options |
Other Ex ratings per project |
Applications
- Hazardous areas: the flameproof structure allows a gauge tap where standard valves are not permitted by zone classification.
- Oil and gas field skids: the multi-function body reduces the number of joints on a classified instrument loop.
- Process plants with Ex requirements: the compact body keeps the certified tap inside the normal gauge footprint.
Customization
Explosion-proof rating, pressure range and port configuration can be confirmed from drawings or project specifications. OEM/ODM production is supported.
Packaging & Transportation
Moisture-proof export cartons with internal cushioning; wooden crates for bulk orders. We support EXW, FOB, CIF, CFR, DAP and DDP.
FAQ
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 and current 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: Do you offer any discounts for large volume orders?
A: For large volume orders, we can offer competitive pricing plans based on purchase quantity, specifications and cooperation models.
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