Lug Type Butterfly Valve Without Pin Ductile Iron DN210

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Loading Port:
Tianjin
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TT OR LC
Min Order Qty:
50 set
Supply Capability:
20000 set/month

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Product Description:

Centerline structure,pinless double half shaft design.
Disc has two-way bearing, no installation direction requirements.
Non-backed replaceable seat with good performance and a longer working life.
Square and short neck for lable use and cost saving.
Easy installation, no need flange gasket.

 

SizeDN50mm-DN600mm
Design standardAPI609/EN593
End flangeDINPN10/PN16, BS4504PN10/PN16, ANSI class125#/class150#
Face to faceAPI609/EN558-1
Top flangeISO5211
BodyDuctile iron/Cast iron
DiscDuctile iron/CF8/CF8M/C95400/C95500
StemSS420
SeatEPDM/NBR/Viton/PTFE
ActuatorBare shaft/Lever/Gearbox and handwheel
CoatingEpoxy/Nylon/PTFE
PinWith out pin
Suitable mediumWater/Seawater/Sewage/Air/Foodstuff/Oil

 

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Q:How warm is the PTFE butterfly valve?
Ordinary PTFE clip butterfly valve normal temperature tolerance of about 120 degrees, instantly to about 150 degrees
Q:How do hydraulic butterfly valves work?
Butterfly valve hydraulic drive device working principle1. manual operationWhen the hydraulic system suddenly fails, the valve can not move when the butterfly plate at any stop. Then, shaking the manual device, the guide block guide block in front of the manual shaft together with the driving shaft end, the cogging and drive shaft spline manual corresponding to the slot. Then, by dialing the driving device, the dial is shifted to the left end, and the transmission spline is connected with the manual shaft by a gear sleeve (the driving device is provided with a limit for preventing the tooth sleeve from jumping up), and the crank is disengaged from the hydraulic cylinder to disengage the hydraulic cylinder. Then turn the manual device and use the manual device to realize the disc movement.2. hydraulic operationWhen the hydraulic system returns to normal operation, the actuating device needs to be operated by hand. First, adjust the hydraulic cylinder to its initial state (0 digits) or at any position. Then manually adjust the opening of the disc to the position corresponding to the cylinder stroke (by observing whether the mark on the gear sleeve is in accordance with the mark on the crank, and judge the position of the disc and the cylinder). Then pull the gear sleeve and engage the spline on the crank by poking the driving device. Then fix the shift to prevent jumping. At this point, start the hydraulic system to restore fluid flow.
Q:What are the classification criteria for pneumatic butterfly valves?
Pneumatic flange butterfly valve, pneumatic flange butterfly valve, this product is made up of rubber sealed butterfly valve and carbon steel or stainless steel valve plate and valve stem. Suitable temperature is less than or equal to 80 to 120 DEG C, such as food, chemical, petroleum, electric power, textile, papermaking, water supply and drainage, gas pipes to regulate the flow and closure of the role of media.Pneumatic control valve is a valve (valve plate) around the rotating fixed axis perpendicular to the channel, which is composed of double or single acting piston (spring reset type) pneumatic actuator and butterfly valve, a rotary type high performance adjust or cut off valves, electric, pneumatic valve positioner or electromagnetic valve, air filter regulator, limit switch (valve position), can be realized on the fluid medium in the pipeline and process to adjust the proportion of the two cut off control, automatic control to achieve the parameters of the fluid flow, pressure, temperature, liquid level etc..
Q:What does "10" in the butterfly valve "D71X-10" mean?
Represents the nominal pressure, refers to the 10MPa pressure butterfly valve, Zhengzhou butterfly valve factory specializing in the manufacture.
Q:What is the meaning of American Standard butterfly valve B series
American Standard flange connection is divided into A, B series. A series for normal flanges, B series for compact flanges. 24 "to no AB series, flange standards for B16.5, 24" above B16.47.
Q:When will Butterfly Valves be used?
3, there are anti-corrosion requirements of the pipeline, such as sewage, chemicals, etc.;4 、 pipes that regulate flow control requirements, such as quantitative systems;5, there are open and close, fast opening and closing requirements of the protection of the pipeline system, rapid cutting......
Q:Gate valve, butterfly valve and so on can do the valve so that?
Yes, but the accuracy of the adjustment is not high. Just about. To adjust the flow, please use flow control valve.
Q:What is the difference between turbine butterfly valve and flanged butterfly valve?
Worm gear flange butterfly valve, also known as worm gear flange plate valve, is a simple structure of the control valve, but also can be used for low pressure pipe medium switch control. Butterfly valve refers to the closure of parts (valve or butterfly plate) as the disk, around the valve shaft to achieve rotation and closing of a valve, the main cut off on the pipe and throttling role. Butterfly valve headstock is a disc shaped disc, in the valve body around its own axis of rotation, so as to achieve the purpose of opening or closing or regulation. Butterfly valve used in furnace, coal gas, natural gas, liquefied petroleum gas, city gas, hot and cold air, chemical smelting and power generation environmental protection engineering system, conveying a variety of corrosive and non corrosive media pipeline, used to adjust and cut off the media flow.Butterfly valve structure is simple, small size, light weight, only by a few parts. The utility model can be rapidly opened and closed only by rotating 90 DEG, the operation is simple, and the valve has good fluid control characteristics. Butterfly valve plate installed in the direction of the diameter of the pipe. In the butterfly valve body cylindrical channel, the disc shaped butterfly plate revolves around the axis, the rotation angle is 0 degrees ~90 degrees between, when rotates to 90 degrees, the valve opens the card completely. When the flange butterfly valve is in the fully opened position, the butterfly plate thickness is the only resistance when the medium passes through the valve body, so the pressure drop produced by the valve is very small, so that the flow control characteristic is better. Butterfly valve with bullet sealing and metal sealing two seal type. Resilient sealing valve. The sealing ring can be mounted on the valve body or attached to the periphery of the disc.
Q:Fire, the signal butterfly valve flange connection or welding?
Grooved flange joint, welded flange connection! Wire bonding. Wire to flange connection! In addition, you can choose the groove type signal butterfly valve!
Q:Butterfly valve network and ordinary butterfly what is the difference?
1. The butterfly valve of the pipe network adopts an eccentric structure. When closed, it has the function of closing and tightening. The sealing performance is reliable. After opening and closing, the cover is completely sealed, and the cover is completely out of contact, so as to ensure that the sealing surface is not damaged.2, the sealing surface is made of stainless steel, corrosion resistant, high temperature resistant, long service life. With two-way sealing function, medium flow is not affected by the installation restrictions (if only one-way control medium should be used to seal the installation direction) is not affected by a single space, can be installed in the any direction.

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