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: What are the differences between different check valves applications? For example, is the fire pump outlet swing check valve or a silent check valve? According to 35How to recognize single wall corrugated pipe and double wall corrugated pipe? Which is better?.What's the use of the silent check valve? And the bellow problem below, is there no answer?: Swing check valve to rotate around the shaft, the fluid resistance is generally less than the lift check valve, which applies to the larger diameter of the occasion, the installation location restrictions, usually installed in horizontal pipelines, it applies with large caliber occasions. According to the number of valves can be divided into single swing type, double valve swing and multi valve swing type of three. Single swing check valves for medium and medium duty applications. Large diameter pipeline using single swing check valve, in order to reduce the water hammer pressure, it is best to use water hammer to reduce the pressure of the slow closing check valve. Double valve swing check valves are suitable for large and medium diameter pipelines. Double check swing check valve with small structure and light weight is a fast check valve. Multi disc swing check valve is suitable for large diameter pipeline

Q: Does one-way check valve affect water flow?: The water inlet of the household water heater is equipped with a triangle valve, which will not affect the flow of water, and be convenient for maintenance and inspection

Q: The air pipe is equipped with a check valve: [air pipe with check valve] wind pipe with check valve, is to prevent changes in the direction of the wind generated negative pressure, the phenomenon of air intrusion.[duct] is a pipe system for air delivery and distribution.[check valve] refers to the flow itself depends on the media itself and automatically open and close the valve, used to prevent media backflow valve, also known as check valve, one-way valve, counter flow valve, and back pressure valve. 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: Check valve is 150, why not put 150 of the smoke pipe?: DN150 check valve, it is possible that the internal path is less than the required value of 5mm-10mm. Therefore, the 150 outer diameter of the smoke pipe is not up.

Q: How can the check valve be distinguished from the cut-off valve?: Look literally can explain ah, pro! Check valve, your fluid medium can come in and want to go back. No way！ Blocked. SO just goes back! This valve switch is usually dependent on the medium itself. What about the stop valve?. The flow of water in your pipe is good, I said, stop (if it is an electric globe valve) press the Shimonoseki button. Stop and stop right now. Medium can not flow. I want to open. Press open. The stem is lifted and the medium will flow! Of course inside the internal structure will not give you too much!

Q: The difference between check valve and check valve: The same thing, called, is based on the difference in the use of the actionFor example, overflow valve and safety valve, back pressure valve, are the same thing, are in the one-way valve behind the increase of back pressure spring

Q: Only one is a soft seal and one is hard sealed: Not the same model. The rubber valve check is HC44X, and the swing check valve is H44H

Q: What does the H/F/P stand for in the check valve H41H/H41F/H41P?: Respectively, the valve seat sealing surface is made of alloy / fluorine plastic / stainless steel.

Q: How to prevent the backflow valve of medium: Among them, the check valve belongs to this type of valve, which includes swing check valve and lift check valve. The swing check valve has a hinge mechanism and a gate like valve free against the inclined seat surface. In order to ensure that the valve can reach the appropriate position of the seat surface at any time, the disc is designed in the hinge mechanism so that the disc has enough swing space to make the disc real and comprehensive contact with the valve seat. The disc can be made of either metal or leather, rubber, or synthetic coverage, depending on performance requirements. The swing check valve is almost completely open and the fluid pressure is almost unimpeded, so the pressure drop through the valve is relatively small. The check valve of the lift check valve is located on the valve seat sealing surface of the valve body. In addition to this valve disc is free to lift, like the rest of the cut-off valve, the fluid pressure valve from the valve seat sealing surface lift, medium return led down to the valve seat, and cut off the flow. Depending on the service conditions, the disc can be of all metal construction or in the form of a rubber pad or rubber ring on the valve frame. The same as the cut-off valve, lift check valve fluid through the channel is narrow, so the check valve by lifting the pressure drop than the swing check valve a little bigger, and swing check valve flow restrictions very little.

Q: How to install the kitchen flue check valve?: 1, vertical transport, the flue should take protective measures, and must be two lifting.2. Locate the center line of the flue position. In the reserved hole, draw down four vertical central lines from the roof, and draw 2 orthogonal central lines on the floor plane.3, the flue to the scene, the first flue hanging to the roof, surrounded by the center line of pop in the flue, and the flue of the reserved hole slowly down the electric hoist, from top to bottom layer installed flue in place, the center line correction. The center line of the flue and the center line of the reserved hole should be less than 1cm, the deviation of the centerline of the upper and lower flue is not greater than 1cm, and each flue must be guaranteed vertically and vertically.4, the installation of flue should each layer as bearing, bearing steel 2 root diameter over 14mm?.5. After the flue is installed, install the check valve hole at each flueFire type flue check valveFirst, stir the cement with a special glue, coat the edges of the check valve, and then install it at the opening of the check valve.6, the construction should be reserved at all levels of the hole, covered with a cover plate, to ensure safety in construction, to prevent construction waste fall into the flue.7, the flue is thin-walled components, in handling and installation should be gently handle, not to impact, not in the pipeline to pile other heavy objects and walking.8, the roof flue should be in the roof insulation layer, fire layer before construction. 9, the use of gas water heater exhaust system is strictly prohibited.

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