Iron Check Valve DN700 Attractive and Reasonable Price
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 20 set
- Supply Capability:
- 6000 set/month
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Usage/Applications Of Iron Check Valve：
Check valve is to rely on the flow of the media itself and automatically open, close the valve flap, used to prevent the media back valve, also known as the check valve, Dan Xiangfa, counter flow valve, and back pressure valve.
Check valve is an automatic valve, its main role is to prevent the media back, to prevent the pump and drive motor reversal, as well as the release of the container medium.
Technical Date | Material Specification | ||
Nominal Diameter | DN40-DN1000 | Valve Body | Cast Iron or Ductile Iron |
Nominal Pressure | PN10/PN16 |
Valve Disc | Cast Iron or Ductile Iron or Stainless Steel |
Operation Temperature | -40°C~225°C | ||
Flange Driling Standard | EN 1902-2 PN10/16 | Seal Material | EPDM OR NBR |
Suface Treatment | Painting |
Valve Spring |
Stainless Steel |
Application | Portable water, water distribution service & feed lines, sewage disposol, irrigation, fire protection pipe systerm, etc. | ||
Packaging & Delivery
| Packaging Details: | Usually is standard export packing with Plywood Case and also can upon customers' requirement |
| Delivery Detail: | Upon customer's requirement |
Specifications
1.cast iron body and caps
2.blow-out proof stem
3.reduce /full bore
4.Certification:ISO9001:2008
- Q: Which kind of steam check valve is good?
- Steam check valve selection spring pressure check valve is better, can be sealed tight.Check valve, also known as one-way valve or check valve, its role is to prevent the medium back in the pipeline. Pump water off the bottom valve check valve also belongs to class. The opening and closing parts depend on the flow of the medium and the power is turned on or off by itself. The valve that prevents the backflow of the medium is called a check valve. Check valves belong to the automatic valve, mainly used for one-way flow of media channels, allowing only medium to flow in one direction, to prevent accidents.
- Q: Check valve note BC/PISTON: SPR-L what does that mean?
- BC==Bolted Cover/ bolted bonnetPISTON== lifting typeSPR-L==Spring-loaded/ is loaded with springsTogether, it is: a spring-loaded check valve. Bolted bonnet (this is common)
- Q: Why is the check valve necessary? Why should it be checked back?
- In special equipment or systems, ordinary shut-off valves cannot be used in order to prevent backflow or intrusion of liquids or gases. A check valve must be used;For example: in order to prevent the water from the ship (ship due to its own weight, weight and pitching, rolling and flooding) / sinking in danger, Tonghai piping must use check valve to achieve the purpose of safety.
- Q: Which type of check valve should be selected for vertical pipes?
- The check valve on the vertical pipeline shall ensure that the spool goes back to its position when the fluid is stationary and reversed.Optional:Butterfly check valves, pipes of low pressureVertical lift check valve, high pressure resistance, good tightnessSwing check valve: flow must be from the next up, the pipe diameter is unlimited
- Q: Our unit pump outlet check valve installed in the vertical pipe, the use of the valve to stop the valve is more serious impact, is not installed, the valve should be how to install it?
- Installation method of pump outlet check valve:1, swing check valve is generally installed in the horizontal pipe: for caliber DN~80mm check valve, can also be installed in theVertical or upward sloping pipe.2, the straight through lift check valve should be installed on the horizontal pipe;3, vertical lift check valve must be installed on the vertical pipe, the medium for bottom-up flow.As the check valve is easy to damage, therefore, should be installed near the pump outlet valve, in the upper part of the check valve with a cut-off valve (general use of ball valve or gate valve), easy to overhaul. To facilitate the relief of the check valve before disassembly, the relief valve shall be installed between the check valve and the shut-off valve.
- Q: How many kinds of structure are there in the check valve?
- 3 butterfly check valve structure similar to butterfly valve, its structure is simple, flow resistance is small, water hammer pressure is smaller;4, diaphragm type check valve has a variety of forms, are used as the opening and closing the diaphragm, due to its good waterproof performance, simple structure, low cost, rapid development in recent years, but the use of diaphragm valve temperature and pressure by the diaphragm material limited;
- Q: How do I install the pump outlet check valve?
- Installation of pump outlet check valves: swing check valves are generally mounted on horizontal pipes: for DN~80mm check valves, they can also be mounted on vertical or upward sloping pipes. The straight through lift check valve shall be installed on the horizontal pipe; the vertical lift check valve must be installed on the vertical pipe, and the medium shall be from bottom to top.
- Q: Does the check valve of the flue of the range hood work?
- Lampblack machine flue check valve is generally installed in the hood outlet check valve, the valve has two blades, a reset spring, exhaust hood leaf was blown open, lampblack machine stop when the blade is spring pressed into the closed state, now is basically take lampblack machine the check valve check valve, but the general tightness is not very good, open the hood can be seen around the gap. According to everyone's reaction and market similar products sold well, smoke hood comes with soot hood flue check valve basically does not work.The picture of the check valve of the flue of the range hood is as follows:
- Q: Can the slow stop disc check valve close quickly?
- Slow closing disc check valve does not turn off quickly."Slow closing" means slow closing and fast closing.The butterfly valve is mainly composed of a valve body, two semicircular discs, a return spring, an oil storage tank, a slowly closing small cylinder set, and a needle valve (a micro regulating valve). The principle relies mainly on the thrust of the imported medium and pushes the two discs smoothly.
- Q: What's the difference between the H76H model and the H76J check valve?
- PN1.6-25mpa, 150LB-2500LB, 5K-63K class;6 check valve material: Q ductile iron, C steel, P-304, R-316, A, I titanium alloy chromium molybdenum steel;Check valve common model:Clip on lift check valves: H71X, H71H;Butterfly butterfly check valves: H76X, H76H;Pairs of wafer type check valves: H74H, H74I, H74M;Silent check valve: H42H, H42W;Micro resistance slow closing check valve: HH44H, HH46H, HH49H;Rubber disc check valves: HC44X;Muffler check valve: HC41H, HC41X, HC41T;Lift check valves: H41H, H41W;Swing check valves: H44H, H44W;Chute ball check valve: HQ41X;Welded check valves: H61Y, H62Y, H64Y.
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Iron Check Valve DN700 Attractive and Reasonable Price
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 20 set
- Supply Capability:
- 6000 set/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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