CHECK VALVE LIFT TYPE DUCTILE IRON DIN DN15- DN300

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Quick Details

Standard or Nonstandard:	Standard	Structure:	Check	Pressure:	Medium Pressure, 1.0Mpa, 1.6Mpa,2.5Mpa,4.0mpa
Power:	Manual	Material:	Casting, cast steel,WCB, stainless steel, ect.	Temperature of Media:	Normal Temperature
Media:	Water	Port Size:	DN15-DN300	Place of Origin:	Tianjin, China (Mainland)
Model Number:	CMAX	Brand Name:	CMAX	Application:	General
Name:	iron water lift check valve	Connection:	Flange	Temperature:	≤425℃
Standard:	GB,BS,ANSI,JIS,DIN,etc	OEM:	Acceptable	Color:	Customized
Certification:	ISO,CE	Warranty:	12 month

Packaging & Delivery

Packaging Details:	standars export wooden for Alibaba Bell DN100 adjustable cast iron water lift check valve
Delivery Detail:	20 days

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

CHECK VALVE LIFT TYPE DUCTILE IRON DIN DN15- DN300

Q: What happens when the check valve is broken?: 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.The check valve belongs to an automatic valve whose main function is to prevent the reverse of the pump and drive motor and the leakage of the container medium.If the check valve is broken, there will be media backflow, pump and drive motor reversal, as well as the leakage of container media

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: What's the W in the check valve H44W?: W represents the sealing surface is the body seal, that is, directly from the valve body out of the sealing surface

Q: Above the flue that valve is called smoke exhaust valve or check valve, I heard there is a five anti exhaust valve: The names are different, and they are acceptable. Five, anti exhaust valve is unique to 10000, the first class of technical effects

Q: What's the difference between the cut-off, check, check, and stop valves three? Better picture,: Stop check valve: when the handwheel is rotated so that the valve stem rises, the disc does not rise together, but only the valve clack is released.

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: 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 to install fire fighting pipe and flue fire 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.

Q: PPR check valve, butterfly valve, as well as water gauge which quota?: The valves and water meters installed in the same pipe are the same

Q: Is it necessary to install a check valve in the piston refrigeration compressor?: To solve this problem, we first need to know the working cycle of the piston compressor:1, compression process, suction valve closed, refrigerant gas in the cylinder from low pressure to high pressure process;2 the exhaust process, compression end, from the cylinder through the exhaust valve to exhaust pipe process;3, expansion process, exhaust end, exhaust valve closed, the piston from the bottom of the cylinder moving to the top of the cylinder process;4 suction process, suction valve opens, low-pressure refrigerant gas inhalation process of the cylinder;From the above piston engines don't seem to need what steps to open check valve. Because the suction valve and exhaust valve on the cylinder are constantly switching each other, the piston machine continues to inhale and exhaust the process. If only from the piston machine, there is no need to install a check valve.But to consider the whole refrigeration system, rather than a simple piston compressor, when the piston of more than 2 units must be horizontal pipeline in a single compressor exhaust pipe to the exhaust duct installed on the check valve and pipe installation is about

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