Product details
Introduction
Manual through conduit gate valves are widely used for the pipeline or station or device which don't need actuators and have no operation time limitation. All the valves should be operated by hand only.
Technical Specifications
Suitable Medium: |
Purified natural gas, natural gas with sulphur（H2S+CO2≤8%）, coal gas, crude oil, finished oil, refinery oil, clean oil and water, etc. |
Suitable Temperature: |
-101℃~121℃（For super low temperature valve） |
Pressure rating: |
PN1.6~42.0MPa (class150 ~ 2500) |
Size: |
DN25~250 (NPS1 ~10) |
Codes and Standards
Design and manufacture |
API 6D |
End to end/Face to face dimension |
API 6D/ASME B16.10 |
Flange Dimension |
ASME B16.5 / ASME B16.47 |
Welded ends dimension |
ASME B16.25 |
Fire safe design |
API 6FA |
Wall thickness |
ASME B16.34 |
Testing |
API 6D |
Features of Manual Through Conduit Gate Valves
1. Designed to API 6D specification. Valves are applicable for oil and gas transportation pipeline, oil field, airport, refinery and chemical industry.
2. Full thru-conduit port is suitable for pigging and wiping. Seats and gate surface can be self cleaned.
3.The seats adopt the piston type floating seats, and the seats and gate adopt a plane sealing structure. The thickness of the Stellite 6# hard alloy surfacing on the sealing surface of the seats and the gate should be to 3mm, and the seats are inserted with a PTFE/RPTFE soft sealing ring (the full-metal seat valve shall cancel the soft sealing ring). The seats and the body are sealed by piston radial sealing ring. At the end of the seats, we fitted with pre-tightening springs, an isolation ring for preventing the precipitation of medium impurities and a fireproof gasket. The seats are also provided with a sealing grease injection channel near the side of the valve cavity.
4. Lock of valve position: In order to ensure that the valve will not be accidentally closed or opened, our company's valve handwheel and bearing box are equipped with all-position orifice plates and locks. Standard padlocks can be used to lock the valve in fully closed, fully open and any position.
5. Material selection for seats sealing pairs
SN |
Name |
Material |
Remark |
1 |
O Ring |
NBR/VITON |
|
2 |
Fireproof Sealing Gasket |
Stainless Steel Toothed Plate（SS304 for non-sour service /SS 316L for sour service）+ Graphite |
|
3 |
Pre-tightening spring |
Inconel X-750 |
|
4 |
Seat Insert |
PTFE/RPTFE |
|
5 |
Fireproof Packing |
Graphite |
|
6 |
Hard Alloy Layer |
Stellite 6# |
Thickness:3mm or above based on the technical requirement |
Product Supply Range
We can make manual through conduit gate valves as below:
Class150: 1"~12"
Class300: 1"~12"
Class400: 1"~10"
Class600: 1"~10"
Class900: 1"~8"
Class1500: 1"~20"
Class2500: 1"~10"
Quality Control Activities
In addition to the characteristics of the above structure and materials, our company also has complete factory inspection methods, and each valve must be inspected in accordance with strict pressure test specifications. In addition to the implementation of API 6D and relevant domestic standards, we also increase the high-pressure gas seal test to the shell to avoid the leakage of the shell after the valve leaves the factory.
FAQ
Q: Could you please design the new and unique valve(s) for clients?
A: Absolutely! We are able to provide the clients with not only standard products, but also unique design based on the special requirements from the site or project! One-stop service is our outstanding superiority with no doubt.
Q: What materials do I need to provide when purchasing valves from your company?
A: It's too easy! Specifications and models are a better reference for us. However, if you don't have one, it doesn't matter. Just tell us your requirements, such as the purpose of the valve, pressure, size, suitable medium and so on. Soon, you will have an amazing solution.
Q: Does this kind of valve only be used in the petroleum industry?
A: Absolutely not. It can be used in various oil & gas long-distance pipelines, oil fields, Christmas trees, airports, natural gas, chemicals, water treatment, slurries, etc.
http://www.api6d-valve.com/
