CHECK VALVE WAFER TYPE DUCTILC IRON DN40-DN2000

CHECK VALVE WAFER TYPE DUCTILC IRON DN40-DN2000 System 1

CHECK VALVE WAFER TYPE DUCTILC IRON DN40-DN2000

Ref Price:: $10.00 - 200.00 / pc

Loading Port:: Tianjin

Payment Terms:: TT or LC

Min Order Qty:: 1 pc

Supply Capability:: 9999 pc/month

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Quick Details

Standard or Nonstandard:	Standard	Structure:	Gate	Pressure:	Medium Pressure
Power:	Manual	Material:	Casting	Temperature of Media:	Normal Temperature
Media:	Water	Port Size:	DN50	Place of Origin:	Tianjin China (Mainland)
Brand Name:	CMAX	Nominal diameter::	DN40-DN2000	Working pressure::	PN6/PN10/PN16/CL125/CL150
Valve Design::	MSS-SP81	Face-to-face::	MSS-SP81	Flange accommodation::	ANSI;DIN ;BS ;JIS;GB
Test Standard::	MSS-SP81;API 598

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	Valve Disc	Cast Iron or Ductile Iron or Stainless Steel
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.	Valve Spring	Stainless Steel

Description:
Nominal diameter: DN50–DN2000
Working pressure:PN6/PN10/PN16/CL125/CL150
Valve Design: MSS-SP81
Face-to-face: MSS-SP81;
Flange Standard: ANSI;DIN ;BS ;JIS;GB
Test Standard: MSS-SP81;API 598;

Nominal Diameter DN		DN50-2000	DN50-2000	DN50-2000	MM
Nominal Pressure PN		0.6	1.0	1.6
Test Pressure	Seal test	0.67	1.1	1.1	Mpa
	Sheel test	9	1.5	1.5
Working Tempertaure		-29~235			℃
Suitable Medium		Cement, Paper Pulp,Sewage,Water, Oil etc.

CHECK VALVE WAFER TYPE DUCTILC IRON DN40-DN2000

Q: The working principle and structure description of the mute check valve: 1, when the medium according to the provisions of the direction of flow, the valve by the media force, is open; the medium back, due to weight and disc valve by the medium reverse force, so that the sealing surface of the valve flap and valve seat sealing and closed, to prevent the media counter to.2, the body and valve sealing surface using stainless steel surfacing.3, the length of the valve according to the provisions of GB12221-1989, flange connection size according to the provisions of JB/T79-1994.

Q: I installed here in the water pump inlet, water pump with a 100 tons of water tank, there are many pumps, long time running, the pump will heat the cylinder, there is no water in the cylinder, the pressure does not go. The water pump is imported. Is the check valve broken or is the installation position wrong?: Is the check valve installed at the inlet or outlet of the pump? Mainly to see whether the water pump suction or press in? There are other factors, such as pressing first class. Generally both sides will be installed, each has its own role, but to look at the type of your pump and other parameters, you describe the situation is too simple to point out in detail, such as specific is that a few, or all? Also, how high the pump needs to be played, and the pressure is often determined. The check valve is installed on the water outlet side of the pump. I simple analysis may be the following reasons, need to have a simple to complex one by one investigation, 1, electrical specifications are matching? 2 、 the pump has air intake or air not discharged 3, piping layout is reasonable? 4, check valve installed counter, or check valve did not open, stuck,? This situation is rare, the general novices easily made 5, you missed the judgment? ------------------- most likely the breath, or simply not enough water, the check valve can be judged according to the type of installation position.

Q: What's the function of the small check valve on the deep well pump? Solve!When the deep well pump works, it does not move inside! Under great pressure！ There is a hissing sound when the deep well pump doesn't work! The air is in! Will it lead to the water in the room? There's a lot of air in it!: This valve is to stop the pump when the intake, through the intake of water to cut off the backflow, to prevent water from being returned to empty, the air can not enter the valve above the part of the water pipe, rest assured

Q: Should the kitchen check be mounted on the wall or on the hood?: Buy their own check valve is generally in the wall of the hole, the hood of the smoke machine, usually with a check valve.

Q: Detailed distinction between backflow preventer and check valve: The backflow preventer consists of two separated check valves and a drain valve. Due to the local head loss of the check valve, the pressure in the middle cavity is always lower than the pressure at the inlet. This pressure difference causes the drain valve to be closed and the pipe is in normal water supply. In abnormal pressure (i.e., the outlet pressure is higher than that of the middle cavity), even if the two check valve can not reverse sealing, safety relief valve can automatically open the reverse water emptying, and the formation of air separation, ensure the health and safety of water upstream.

Q: What is the function of the stop valve and check valve installed on the water supply pipe?: The check valve belongs to an automatic valve, whose main function is to prevent the backflow of medium, prevent the reverse of pump and drive motor, and release the container medium.

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?: Check valve is to withstand the impact of water hammer, you installed no problem.

Q: Swing check valve can prevent any sewer defection: 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. This kind of valve should be installed horizontally in the pipeline.

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: