Ductile Iron Check Valve DN200 High Quality and Reasonable Price

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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

Ductile Iron Check Valve DN200 High Quality and Reasonable Price

Q: My house is public flue, a total of six floor I live five floors, with the side suction hood, hood in the windy outside started as soon as the check valve pops ring from occupancy, have what way?: The hood check valve is in two halves of plastic. It is too light and the wind vibrates. You can add some things, as long as the soot blowing function is OK (try several times). Able to solve problems.

Q: What is the difference between the check valve rcvx and SFCV?: One way check valve is check valve, only for preventing all kinds of pipelines or equipment on the flow medium reverse flow one-way valve.Check valves are widely used and there are many kinds of check valves. The following are common water supply and heat check valves:1, spring: the liquid from the bottom up, rely on the pressure spring controlled valve, the pressure disappears, the spring force the valve, sealing liquid backflow. Often used in the smaller diameter check valve.2, gravity: and spring similar to rely on the valve's own gravity closed to prevent backflow.

Q: How much is the 6 point check valve for the water pipe at home?: 1, home hose with 6 points of the water pipe, check valve, copper 20-40 yuan.2, check valve refers to rely on the flow of the media itself and automatically open and close the valve, used to prevent the media back of the 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: What are the differences between the vertical check valve and the horizontal check valve?: Difference：The main difference is that the valve center and valve seat are placed upright and horizontally placed, usually designed with the pipe.Brief introduction:Vertical check valve: because of the pressure acting on the inlet end of the pipeline, the spring resistance is overcome so that the valve is opened or closed. When the inlet end of the media pressure is lower than the exit end, the spring will push the spool to the valve seat, so that the valve closed, to prevent the flow of medium, so the beginning of the role of back.Horizontal check valve, also known as check valve, its role is to prevent the medium back in the pipeline. 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: How to install the check valve?: The general check valve is provided with an arrow, and the direction of the arrow pointing is the direction of the flow of the transmission medium.

Q: Which side of the gate is the fire check valve in the pump room?: The check valve is installed between the shock absorbing flexible joint and the water outlet control valve at one side of the water outlet pipe of the water pump

Q: Check valves - check valves - what's the difference between one-way valves?: 3, swing type: liquid in the valve straight through, relying on the pressure to open the side of the rotating valve flap, after the loss of pressure, the valve depends on the weight back, the reverse of the liquid pressure closed valve. Other one-way valves (check valves), such as the sewage check valve, air defense explosion-proof valve and liquid use of the principle of the check valve is very similar

Q: For home use, self suction pumps are installed outside the well and pumped into the water tank.Please check with the self-priming pump function (check valve, water valve)? If not, is not installed in the pipeline connecting wells and pumps? Thank you。: Water inlet generally has a check valve, if not, then only in the suction port on the installation of the check valve. Of course, you can also install a one-way valve on the pipe near the suction port.

Q: Install check valve is not afraid of water, in case the back of the water pollution?: The check valve is to prevent the backflow of water from the pipe after the pump stops. If the pipe is very large and the water is flowing back every time, isn't it a waste?If the water tank or tank pipe at the bottom of the pool, it must check valve, or a box of water will drain off, if the line is not big, the water inflow of the water is from the top of the box, it can also be installed check valve. Is not loaded with pipeline and process!

Q: How to install the water pipe check valve?: If the pipe in the installation position is vertical, you can choose the swing type and pipe type!If the installation position of the pipe is horizontal, you can choose the lifting type!Lift check valve opens and stops at the fastest speed!The swing check valve has the least resistance!

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