Basic Info.
Seal Surface
Wedge Gate Valve
Thread Position of Valve Rod
Outside Gate Valve
Usage
Regulation, Safety, Emptying, Drain, Temperature Control, Flow Control
Application
Industrial Usage, Water Industrial Usage, Household Usage
Transport Package
Plywood Case
Specification
DN50 - 1000
Product Description
Product Usage
The flat gate valve produced by Lianggong Valve Group Co., Ltd. is a sliding valve whose closing part is a parallel gate. The closing member can be a single gate or a double gate with a distraction mechanism in between. The pressing force of the gate to the valve seat is controlled by the medium pressure acting on the floating gate or the floating valve seat. If it is a double gate plate gate valve, the expansion mechanism between the two gates can supplement this pressing force.
Product Categories
The flat gate valve can be divided into manual flat gate valve, pneumatic flat gate valve and electric flat gate valve according to the driving mode. According to the use and occasion, it can be divided into diversion hold flat gate valve, non-diversion hole flat gate valve, oil field flat gate valve, pipeline flat gate valve, gas flat gate valve, etc.
Structural Features
This series of products adopt the new floating seal structure, which is suitable for the opening, closing and adjusting devices of control media such as oil and natural gas with pressure less than 15.0MPa and temperature from -29 ºC to 121 ºC. The product has a novel structural design and material selection. Appropriate, rigorous test, light operation, strong anti-corrosion, abrasion resistance and erosion resistance. It is an ideal new equipment in the petroleum industry.
1. Adopting floating valve seat, two-way opening and closing, reliable sealing and flexible opening and closing.
2. The gate is provided with guide strips for precise guidance, and the sealing surface is spray welded with carbide, which is resistant to erosion.
3. The valve body has a high load-bearing capacity and the channel is straight-through. When fully opened, it is similar to the gate diversion hole and the straight pipe, and the flow resistance is very small. The valve stem adopts composite filler, multiple seals, making the seal reliable and low friction.
4. When closing the valve, turn the handwheel clockwise to move the shutter down to the bottom. Due to the pressure of the medium, the inlet seal seat is pushed towards the direction of the shutter to form a larger seal specific pressure, thus forming the first seal. At the same time, the shutter is pressed against the sealing seat at the outlest end to become a double seal.
5. Due to the double seal, the consumable parts can be replaced without affecting the work of the pipeline. This is an important feature that our products take priority over similar products at home and abroad.
6. When the gate is open, turn the hand wheel counterclockwise, the gate moved up, and the diversion hole and channel hole intersect. With the rise of the gate, the through hole gradually increases, and when the limit position is reached, the diversion hole and the passage hole coincide, and they are fully opened at this time.
Design Standards
Design and manufacture of standards: JB / T 5298
Structure length standard: JB / T 5298
Connection flange standard: GB / T 9113
Pressure temperature grade: GB / T 12224-2005
Test test standards: GB / T 13927-2008, JB / T 5298
Performance parameters
Part Name | Parts and materials |
JB/T77298 | API 6D |
Valve / bonnet | WCB | WCB | A352-LCB | A351-CF8N |
gate | 2Cr13+ENP | 20CrMoV+STL | ANSI 410+ENP | ANSI 316+ENP |
Valve stem | 2Cr13 | 2Cr13 | A182-F6a | A182-F316S |
Seat | 25+PTFE | 20CrMoV+STL | A105+PTFE | A182-F316+PTFE |
filler | NBR/FPM | Flexible graphite | Teflon |
Gasket | 18-8 / Flexible Graphite |
bolt | 35 | 35CrMo | A193-B7M | A193-B8 |
proper temperature | -29~250ºC | -29~550ºC | -46~250ºC | -40~200ºC |
Suitable media | Water, oil | Steam, oil | Propane, ethylene | Nitric acids |
The main shape and connection dimensions
Nominal diameter | The main dimensions and connection dimensions |
L | D | D1 | D2 | Z-Φd | H | D0 |
Z43PF-16C |
100 | 150 | 215 | 180 | 155 | 8-Φ18 | 700 | 300 |
125 | 150 | 245 | 210 | 185 | 8-Φ18 | 798 | 350 |
150 | 150 | 280 | 240 | 210 | 8-Φ23 | 895 | 350 |
200 | 180 | 335 | 295 | 265 | 12-Φ23 | 1130 | 350 |
250 | 180 | 405 | 355 | 320 | 12-Φ25 | 1290 | 400 |
300 | 200 | 460 | 410 | 375 | 12-Φ25 | 1480 | 450 |
350 | 200 | 520 | 470 | 435 | 16-Φ25 | 1660 | 450 |
400 | 218 | 580 | 525 | 485 | 16-Φ30 | 1850 | 500 |
450 | 218 | 640 | 585 | 545 | 20-30 | 2080 | 500 |
500 | 229 | 705 | 650 | 608 | 20-34 | 2300 | 600 |
600 | 248 | 840 | 770 | 718 | 20-41 | 2680 | 800 |
700 | 286 | 910 | 840 | 788 | 24-41 | 3080 | 800 |
800 | 286 | 1020 | 950 | 898 | 24-41 | 3491 | 1000 |
Z43PF-25 |
100 | 150 | 230 | 190 | 160 | 8-Φ23 | 700 | 300 |
125 | 150 | 270 | 220 | 188 | 8-Φ25 | 798 | 350 |
150 | 150 | 300 | 250 | 218 | 8-Φ25 | 895 | 350 |
200 | 180 | 360 | 310 | 278 | 12-Φ25 | 1130 | 350 |
250 | 180 | 425 | 370 | 332 | 12-Φ30 | 1290 | 400 |
300 | 200 | 485 | 430 | 390 | 16-Φ30 | 1480 | 450 |
350 | 200 | 550 | 490 | 448 | 16-Φ34 | 1660 | 450 |
400 | 218 | 610 | 550 | 505 | 16-Φ34 | 1850 | 500 |
450 | 218 | 660 | 600 | 555 | 20-Φ34 | 2080 | 500 |
500 | 229 | 730 | 660 | 610 | 20-Φ41 | 2300 | 600 |
600 | 248 | 840 | 770 | 718 | 20-Φ41 | 2680 | 800 |
700 | 286 | 955 | 875 | 815 | 24-Φ48 | 3080 | 800 |
800 | 286 | 1070 | 990 | 930 | 24-Φ48 | 3491 | 1000 |
FAQ:
Q: Are you a trader or manufacturer?
A: We are a manufacturer. We design, develop, manufacture, test and sell industry valves, including ball valves, gate valves, globe valves, check valves, butterfly valves, safety valves, plug valves, bellows valve, needle valves, knife gate valves, flanges and valve fittings.
Q: What kind of certification do you have?
A: We have API 6D, API600, API602, API609, API 607&API 6FA, ISO9001, ISO14001, OHSAS18001, CE&PED and EAC certification.
Q: How long is your delivery time?
A: Generally it is 2-7 days if the goods are in stock. For large quantity, as usual, it can be sent out within 10-40 days.
Small parcel will be dispatched by DHL, FedEx, UPS or TNT Courier.
Big cargo will be delivered by Air freight or By Sea.
Q: Do you provide samples?
A: We can provide samples production and service. We will choose the shipping way as you required: By sea, by air or by express. Any questions about samples, please contact us.
Q: What about OEM products?
A: We will finish the production within 30-40 days after payment has been confirmed.
We will choose the delivery way as you required: by sea, by air or by express.
Q: Can you produce the products according to my own drawings?
A: Yes, we can produce the products according to your drawings that will be most satisfy you.
Welcome to inquiry for other related products. Any question or problem will respond within 12 hours.
Address:
No. 32, Gangqiang Road, Yongxing Street, Longwan District, Wenzhou, Zhejiang, China
Business Type:
Manufacturer/Factory
Business Range:
Industrial Equipment & Components, Manufacturing & Processing Machinery
Management System Certification:
ISO 9001, ISO 14001, OHSAS/ OHSMS 18001, HSE
Company Introduction:
Our company China Lianggong Valve Group Co., Ltd was founded in 1989. We design, develop, manufacture, test and sell industry valves, including cast and forged steel/stainless ball valves, gate valves, globe valves, check valves, butterfly valves, elbows, fittings.
Lianggong′s registration capital is 258 million CNY, with 9 sub-companies that are fully controlled. Valve′s sizes can be DN10-5000 and 1/2" ~ 80", pressure from 0.6 to 42.0 MPa and 150 lb to 2500 lb, temperature ranges from -196º C to 1350º C. It is widely used in power station, nuclear power, petroleum, chemical industry, natural gas, military industry, municipal administration, metallurgy, construction, pharmacy, paper making, coal mine, cement, pollution discharge, environmental protection, energy saving and other industries. Its products are reliable in quality and stable in performance and are highly praised by users.
Production Plants & Equipment
- Area 199800
- 400+ CNC/NC lathes
- The annual total value of out-put 358 million USD(1.5 Billion CNY)
Employee Info
- Over 1200 employees overall
- 15 senior engineers
- 55 engineers
- 10 QC engineers
- 8 after-service engineers
Major Approvals
- API 6D, API 607, API 609, API 600,
- ISO 9001, ISO14001
- OHSAS18001
- CE
Tests & Inspections
- RT, UT, MT, PT
- Valve cryogenic test & high-temperature test
- O-ring AED Test
- Ball valve bending test in simulated pipeline
- Fugitive Emission Test
R & D
- AutoCAD, Solid works, FEA (Finite Element Analysis)
- 37 patents (5 for innovation, 32 for utility models)