1. Embed the seat with PTFE ring, blow-weld the gate with hard alloy so as to reinforce the sealing surface. Double-sealing that can be protected by injecting grease.
2. Flexible to open and shut with small torque that is only 1/3~1/2 times as much as that of general valves.
3. The unique three-layer adjustable packing structure insures seal and reliability of bonnet and stem.
4. Easy to operate and maintain.
5. Slab gate valve with a guiding hole is used on pipeline needs cleaning with the tube cleaner, while slab gate valve without a guiding hole is used on pipeline needs not cleaning.
6. Adjustable slab gate valve can be installed on exit of pump, station, and pipeline of which the medium needs to be adjusted and stop.
7. Slab gate valve of WB type can be installed on any angle (horizontal, vertical, acclivitous), and is more convenient to drain.
8. Speediness-interrupted slab gate valve with buffer can be open and shut rapidly, without striking when closing, and the novel pneumatic, manual switching structure, makes it flexible to operate, and more convenient and reliable.
9. AT type with low pollution to medium can be widely installed on transportation pipelines in airport and storage equipment of oil and gas, or pipelines with natural gas, petroleum and petrolic products, or for chemical industry, entironment protection.
10. VT type with non-rising stem and accurate intuitionistic indicator, of which the height has been shortened effectively, is more convenient to operate and maintain. The gate with a guiding hole can protect the sealing face effectively, and can be cleaned with tube cleaner.
11. Slab gate valve of VS type can be buried underground with pipelines for a long time, is the best choice for pipelines of city gas, natural gas and petroleum. Besides the advantages of the VT type, the inside surface of the VS type is treated with epoxy coating while the outside surface is painted with corrosion-protection layer.
12. Slab gate valve of WP type lightens the burden of pipelines effectively. Its special structure and light body makes it especially appropriate for storage equipment of oil and gas.
13. Electric slab gate valve involves integral explosion-proof type, explosion-proof type and general type. Limitorque, the USA Rotork, England Auma, Germany will be chosen according to user's requirement, or chosen internally.
1) The seat ring uses the floating seat ring structure with O-Seal Ring sealed and pre-tightening force applied to have inlet and outlet dual-way sealed, and the open-close moment with this structure is 1/2 that of the common valves only, able to lightly open and close valve.
2) When fully opened, the valve's channel is smooth and linear,with an extremely small flow resisting coefficient and no pressure loss ,and the pipeline can be cleaned with hair-ball through it .
3) Automatic removal of the high pressure in the internal cavity when the valve is about to close so as to ensure safety.
4) Fully sealed structure leaves a good protective property, suitable for the requirement of 24-hour duty.
Standard for gate valves:
Design manufacture standard: API 6D
Length of structure: API 6D
Flange connecting end: ASME B16.5/ASME B16.47
Butt welding connecting end: ASME B16.25
Wall thickness: ASME B16.34
Inspection and test: API 6D
Pressure and temperature rating: ASME B16.34
|Main material||WCB, WCC, LCB, CF8, CF8M, CF3, CF3M, CN7M, CF8C, 4A, A105, LF2, F304, F316, F304L, F316L, F321, F51, ect.|
|Pressure rating||Class 150 to Class 2500 (PN2.5 to PN 420)|
|Standards applied||API. ASME, ANSI, NACE, CE/ EN, DIN, JIS, BS, ISO, TS, GB, etc.|
|Operative temperature||-196 °C to 980 °C ( -320.8 °F to 1796 °F)|
|Optional operation||Manual, Gear, Electric, Pneumatic, Hydraulic.|
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