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Help CenterSwing Type Check Flow Control Valve for Water, Oil & Fluid Pipelines
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01.Description
The slow closing check valve is composed of the main valve and the control pipeline of the hydraulic control valve, and the closing time of the main valve can be adjusted.It is installed at the outlet of the water pump of the building water supply system. It is mainly used to prevent the backflow of the medium and can effectively reduce the impact and noise of the water hammer.
02.Main parts&material
| No. | Part | Material | China stardard |
| 1 | BODY | DUCTILE IRON | EN GJS-500-7 |
| 2 | SEAT | STAINLESS STEEL | AISI 304 |
| 3 | O-RING | RUBBER | NBR |
| 4 | ORING | RUBBER | NBR |
| 5 | BOLTS | STAINLESS STEEL | A1 |
| 6 | WASHER | STAINLESS STEEL | A2 |
| 7 | COVER | DUCTILE IRON | EN GJS-500-7 |
| 8 | BUSH | BRASS | CuZn40Pb4 |
| 9 | SPRING | STAINLESS STEEL | AISI 304 |
| 10 | NUT | STAINLESS STEEL | A2 |
| 11 | DIAPHRAGM | RUBBER | EPDM>NYLON |
| 12 | SUPPORT RING | DUCTILE IRON | EN GJS-500-7 |
| 13 | OBTURATOR | DUCTILE IRON | EN GJS-500-7 |
| 14 | MAIN GASKET | RUBBER | EPDM |
| 15 | SEAL RING | STAINLESS STEEL | AISI304 |
| 16 | STEM | STAINLESS STEEL | AISI304 |
| 17 | PLUG | STAINLESS STEEL | AISI304 |
| 18 | PLUG | STAINLESS STEEL | AISI304 |
| 19 | V-PORT | STAINLESS STEEL | AISI304 |
03.Features
001.Hydraulic control, no external driving force.
002.The main valve has only one moving part and the failure rate is low.
003.Diaphragm structure, no friction, high control sensitivity.
004.The pressure behind the valve does not change with the change of the pressure in front of the valve.
005.The pressure behind the valve does not change with the change of system flow;
006.Good static pressure reduction effect;
007.Wide range of pressure regulation after valve;
04.Dimensions
| DN | L | ØD | ØK | H | N-Ød | ØB | ||||||||
| PN10 | PN16 | PN25 | PN10 | PN16 | PN25 | PN10 | PN16 | PN25 | PN10 | PN16 | PN25 | |||
| 50 | 230 | 165 | 165 | 165 | 125 | 125 | 125 | 177 | 4-Ø19 | 4-019 | 4-019 | Ø99 | Ø99 | Ø99 |
| 65 | 290 | 185 | 185 | 185 | 145 | 145 | 145 | 202 | 4-Ø19 | 4-019 | 8-019 | Ø118 | Ø118 | Ø118 |
| 80 | 310 | 200 | 200 | 200 | 160 | 160 | 160 | 219 | 8-Ø19 | 8-Ø19 | 8-019 | Ø132 | Ø132 | Ø132 |
| 100 | 350 | 220 | 220 | 235 | 180 | 180 | 190 | 243 | 8-Ø19 | 8-Ø19 | 8-Ø23 | Ø156 | Ø156 | Ø156 |
| 125 | 400 | 250 | 250 | 270 | 210 | 210 | 220 | 243 | 8-Ø19 | 8-Ø19 | 8-Ø28 | Ø156 | Ø156 | Ø156 |
| 150 | 480 | 285 | 285 | 300 | 240 | 240 | 250 | 333 | 8-Ø23 | 8-Ø23 | 8-Ø28 | Ø211 | Ø211 | Ø211 |
| 200 | 600 | 340 | 340 | 360 | 295 | 295 | 310 | 428 | 8-Ø23 | 12-Ø23 | 12-Ø28 | Ø266 | Ø266 | Ø274 |
| 250 | 730 | 405 | 405 | 425 | 350 | 355 | 370 | 478 | 12-Ø23 | 12-Ø28 | 12-Ø31 | Ø319 | Ø319 | Ø330 |
| 300 | 850 | 460 | 460 | 485 | 400 | 410 | 430 | 538 | 12-Ø23 | 12-Ø28 | 16-Ø31 | Ø370 | Ø370 | Ø389 |
| *350 | 980 | 520 | 520 | 555 | 460 | 470 | 490 | 550 | 16-Ø23 | 16-Ø28 | 16-Ø34 | Ø429 | Ø429 | Ø448 |
| NOTE: 1. *DN 125/350 use same internal as DN100/300 2. AISI 304 factory standard material, consult factory for AISI 316 material |
||||||||||||||
05.Execution standard
| Design standard | CJ/T219, JB/T10674 |
| Connection standard | GB/T17241.6 |
| Face spacing standard | GB/T12221 |
| Inspection testing standard | GB/T13927 |
06.Technical parameters
| Nominal diameter | DN50~DN400(2"~16") PN16 DN50~DN300(2"~12") PN25 |
| Nominal pressure | 0.8MPa-1.3MPa |
| Operating temperature | 0°C~85°C |
| Seal test | 1.1PN |
| Shell test | 1.5PN |
| Suitable medium | Water |
07.Operating principle
The slow closing check valve is composed of the main valve and control pipeline of the hydraulic control valve and is installed at the outlet of the water pump of the building water supply system.When the pump is open, the water flow gives upward thrust to the disc of the main valve, and the upper chamber of the main valve drains out to open the main valve. The opening time of the main valve can be controlled by adjusting the opening size of the ball valve on the control pipe.When the pump is closed, the upward thrust at the disc disappears, and the water flows back to fill the cavity of the main valve, so that the main valve is closed. By adjusting the opening of the ball valve on the control pipe, the closing time of the main valve can be controlled.
2.Factory tour
3.FAQ
Q1.How about your delivery time?
A. Commonly, it is 5-10 days if in enough stock. It will takes about 20-30 days after receiving the deposit, the delivery time depends on the items and the order quantity.
Q2: Are you trading company or manufacturer ?
A: We are a manufacturer of hydraulic control valve,gate valve,butterfly valve,check valve,pressure reducing valve and other valve parts for Water plant, secondary water supply, municipal pipe network, reservoir, garbage treatment plant, subway and other industries in municipal engineering;Petrochemical, steel plant, power plant, shipbuilding and paper-making, bio-pharmaceutical, etc
Q3: Can you produce according to our own drawings?
A: Yes, please send your own drawing draft to us.OEM items are welcome.
Q4: Do you provide samples ? is it free or extra ?
A: Yes, we'd like to offer the sample for free charge but the freight will be on your charge.
Q5: Do you have agent or representative abroad?
A: We don't have any agents abroad up to now. If you have interests to join us as agent and enjoy more discounts.Just feel free to contact us then we can discuss more details.
Q6: Can we print the LOGO on products?
A: Yes, the OEM is available with the permission of our customers.
Q7. what is your payment term?
A: T/T or L/C,if you want any other way,please contact us.
Q8: what is your main market?
A:Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe, North America, South America, and so on.
Q9: If products have some quality problem, how will you deal with?
A: We will be responsible for all the quality problems.
Q10: What can I get from cooperating with SUOTE VALVE?
A: 1. Special valves, with customized service.
2. Timely production and delivery, time is money.
3. Market protection service, long term business strategy.
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