CHECK VALVE LIFT RUBBER FLAPPER DIN DUCTILE IRON DN40- DN300

CHECK VALVE LIFT RUBBER FLAPPER DIN DUCTILE IRON DN40- DN300

Ref Price:: $20.00 - 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:	Check	Pressure:	Medium Pressure
Power:	Manual	Material:	Casting	Temperature of Media:	Medium Temperature
Port Size:	DN40-DN300	Place of Origin:	China (Mainland)	Brand Name:	CMAX
Application:	General	Medium:	Water, air, oil

Packaging & Delivery

Packaging Details:	standard export packing plywood case
Delivery Detail:	30 days

Features
● Rubber encapsulated disc
● Drain plug hole makes insertment of lifting equipment for flap possible
● Suitable for both horizontal and vertical installation
● FBE coated inside and outside
● Product color:Blue RAL5017

Technical Specification
● Flanges Drilling:EN1092-2 PN16
● Hydraulic test to ISO5208
Seat Test Pressure:17.6 bar
Shell Test Pressure:24 bar
● Maximum temperature:70℃

Materials

Parts Name	Material
Valve body	Dutile iron, stainless steel, Cast Seel
Valve gland	Dutile iron, stainless steel, Cast Seel
Connection type	Flange connection
Application temperature	≤80°C
Valve disc	Stainless steel+ nylon cloth wrap

CHECK VALVE LIFT RUBBER FLAPPER DIN DUCTILE IRON DN40- DN300

Q: Does the tap water return to the water?: 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: To prevent water meter rotation, where should the check valve be installed?: The two check valves are already installed

Q: What is the air pipe check valve?: The air pipe check valve is installed in the ventilation or air conditioning duct. When the fan is running, the valve is opened and the air flow is passed smoothly. When the fan stops, the valve is closed to prevent the air from reversing.

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.Check valves are plain check valves, only one side seal. Backflow preventer is more expensive than ordinary check valve. Double protection and heavy protection!

Q: 40 how large check valves are installed in the water pipes?: Crown valve press40 of the pipe outer diameter of 48 DN40 check valve on it

Q: What does the number 16 on the check valve mean?: This is the pressure level of the valve, which represents 16Kg, which is used for piping pressure less than this pressure.

Q: Is it necessary to install a check valve for suction well pumping well? If you need to install what kind of check valve (about lifting, butterfly valve, also a what to forget), which (installed in the water outlet, water inlet, or water pipe), ask again need to install the filter valve? I do not understand, ask for expert doubts! Thank you very much!: The filter screen is arranged at the water inlet check valve and is installed below the water pump

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: What are the brands of check valves?: Check valve refers to rely on the flow of the media itself and automatically open and close the valve flap, used to prevent media backflow valve, also known as check valve, one-way valve, counter flow valve, and back pressure valve.

Q: What is the difference between the check valve and the check valve?: The same thing is the flue check valve. We need to contact the manufacturer

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