Double-drive pneumatic knife gate valve

A brief introduction:
SPZ673 series Double drive pneumatic knife gate valve Slurry and flashboard valve is one of the automatic control valve in the production process of varieties. A straight stroke piston type pneumatic actuator and knife type valve structure, equipped with a solenoid valve through the completion of the two cut off control, equipped with electric valve positioner can also complete control. The user can choose according to the actual needs. The main use of cast steel, stainless steel and other materials. Especially suitable for papermaking industry, chemical industry, coal, water, sugar and other industries to make adjustments or cut off the fluid control in the pipeline.
Second, SPZ673 Double drive pneumatic knife gate valve Characteristic：
1. knife gate slurry, dark rod and rod of both single and double seal structure; sealing structure, full circle design of the DC channel without slag, block. Processed into the bottom plate blade knife blade, a sealing ring with plane floating, floating ball arc metal sealing structure, between the gate and the metal seat is gapless hoist, on soft materials such as fiber, pulp, wood pulp with large shearing force and self-cleaning function, but also has good opening and closing function. The upper blades installed in the hard Teflon wiper can prevent dust and scratch gravel and other substances into the packing box, can significantly increase the life of blades.
2. body, filling culvert are precision casting, the whole body with flange type casting, valve plate made of stainless steel and precision processing can obtain ideal sealing effect of grinding and polishing. Compact design, small occupying space, light weight, easy installation, wear-resistant, non stick slag anti blocking measures to perfect and convenient maintenance and long service life.
3., slurry knife gate valve can be made within the V shape, U shape, triangle channel. V type gate control can be used as a regulator, the connection form of clip, flange lug, metal to metal seal, metal sealing of soft polyurethane, PTFE seal.
The 4. piston pneumatic actuator, powered by compressed air, an air pressure signal of electric - gas valve positioner or solenoid valve input, the pressure thrust on the piston, and the push rod displacement, to achieve linear motion.
5. medium: gold powder, tailings, pulp, wood pulp, fiber, dust, chemicals, sewage treatment tank, ore, slag, coal, asphalt, outlet, fruit, grain, cement slurry, slaughter wastewater etc.. Applicable temperature; soft sealing: (less than 150 DEG C (tetrafluoroethylene), polyurethane is less than or equal to 80 DEG C), seal: less than or equal to 425 DEG C. Working pressure: 0.6 ~ 1.6MPa, nominal diameter: DN40~DN900mm.
Three, Double drive pneumatic knife gate valve Technical parameters:
Brａnd / model: SPZ673 SPZ673F SPZ673H SPZ673W and zhongwei.
Main material: steel, stainless steel.
Suitable medium: syrup, pulp, sewage, coal ash, slag and water mixture medium etc..
Material: steel, stainless steel.
Sealing form: soft seal, seal.
Standard: GB, American Standard.
Shape: medium.
Flow direction: one-way.
Parts and accessories: positioner.
Use: sewage.
Type (channel position): two.
Connection: flange to clamp.
Nominal diameter: DN50-DN1200 (mm).
Drive mode: Double pneumatic drive.
Environment: atmospheric pressure.
Working temperature: room temperature C.
Drive mode: dual drive connection: clamp 7 flange 4 form;
The parallel single gate 3 sealing surface and lining material: rubber X PTFE F.
Four, Double drive pneumatic knife gate valve Standard Specification for:
Design and manufacturing standards:
The structure of standard length: GB/T 12221-2005
Flange standard: GB/T 9113
Pressure temperature rating: GB/T 12224-2005
Test standard: GB/T 13927-2008
Five, the main performance specifications:

Six, main parts material:

Seven, structure diagram and the main external and connecting dimensions (mm):

Eight, ordering:
1, customers have special requirements for products, must be in the contract to provide the following instructions:
2, the length of the structure, the connection form of nominal diameter, full size, shrinkage, pipe size, and according to the medium temperature and pressure, test, inspection standards and other requirements
3, if the unit has been selected by the design model of our products, please press the model directly to our sales department order;
4, this field according to the special requirements of customers of all kinds of driving device configuration. If necessary, please contact our technical department.
5, when the occasion is very important, or more complex piping when you try to provide design drawings and detailed parameters by Zhongwei Technology Department audit checks for you.