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: Should the pressure gauge be mounted before or after the check valve at the back of the pump?: It should be the valve behind the exit because it can be replaced easily if damaged

Q: Standard and specification for stop check valves: Design and manufacture: GB12235 structure length: GB12221Pressure temperature range: GB9131, JB/T74, HG20604Connection flange: JB/T79, GB9113, HG20592Test and test: JB/T9092, GB13927

Q: The check valve for the printer doesn't have any air in it, but it doesn't come out. It still doesn't work: From your personal statement, analysis of leakage, box of ink cartridges, ink the check valve back looked at the appearance of normal needle, injecting ink into ink box to see, I wish you good luckIn addition, I have not used check valve, the friend that has seen, personal speculation that there is a switch, should be misleading you

Q: What are the ten major brands of copper check valves?: I knew that:1, Amico2, Jie Kelong3 crown4, good day5, KITZ

Q: Back pressure valve and check valve difference: Oil is generally put into the wells of the check valve calling back pressure valveCheck valve is a general name, mainly lifting type and swing type.

Q: Tap water tank with vertical and horizontal check valve.: Ball valves usually have very narrow seats, and may remove solids and make seating more efficient.The problem of vibration may be limited to small valves. When the valve is large, the inertia of the moving parts increases. The increased inertia may effectively damp the vibration and cause delayed closing, after the backflow has started. The damping of the seat becomes very important.All valves must check the flow path area and calculate the flow velocity for the design operating conditions. The area of the disc and piston is as important as the area of the main orifice. The smaller runner areas are corrosion prone and may cause cavitation wear.For specific functions, the valve body of the check may include auxiliary connections such as vents and drains. Hot applied valves may sometimes have a bypass valve to allow the system to warm up at low flow.

Q: What's the difference between the h76x check valve h77x?: H76x check valve h77x distinction: h76x check valve is a clamp type double valve swing structure, h77x is the clamp butterfly type structure.

Q: Can the slow stop disc check valve close quickly?: At this point, the valve will automatically close under the influence of the spring and the medium return. However, as the piston rod is in an extended position, the valve can not be closed all the way, and there is about 20% of the area left to make the medium pass, so as to eliminate the water hammer. The disc is divided into two parts by the piston, which is fast, slow and slow. It can not only prevent the motor from reversing, but also eliminate the mute effect.

Q: What's the difference between the cut-off check valve and the stop valve?: The stop check valve prevents backflow and is indistinguishable from the exterior, but can be separated from the spool.

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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