SS304 Slurry Pneumatic Flange Knife Gate Valve Lug Air Cylinder Control

Descriptions And Features Of Uni-directional Pneumatic Knife Gate Valve:

● The structure of the pneumatic flange knife gate valve is divided into two parts:
1). Pneumatic actuator: By driving the piston or rotating the torsion shaft with compressed air, it moves the valve stem ‌
2). Valve body: It adopts a wedge-shaped gate design. The movement direction of the gate is perpendicular to the fluid direction, achieving full opening or full closing ‌

● The sealing forms are divided into hard sealing (metal-to-metal) and soft sealing (metal-to-polyurethane, reinforced polytetrafluoroethylene) ‌

● In terms of working principle, pneumatic knife gate valves are divided into single-acting and double-acting types:
1). Single-acting cylinder: relies on spring return. The valve closes when the air is open and opens when the air is cut off (normally open type). Or when the gas is off, the valve is closed; when there is no gas, the spring pushes the piston to close (normally closed) ‌
2). Double-acting cylinder: The air path is controlled by a two-position five-way solenoid valve. When air enters from hole a, the valve closes; when air enters from hole B, the valve opens ‌

● The pneumatic flange knife gate valve has the following performance advantages:
Efficient operation: Compressed air drive has a fast response and can complete opening and closing in a short time, making it suitable for emergency shut-off systems ‌
Safe and reliable: Robust design with excellent sealing performance, effectively preventing medium leakage
Easy to maintain: simple structure, easy to maintain and long service life
Strong adaptability: It can handle various media such as gas, liquid and slurry, and the sealing material can be selected according to the medium
Can be remotely controlled: it supports remote operation through control systems such as PLC and DCS

● Pneumatic flange knife gate valves are widely used in the following industry fields:
Coal preparation and mining: processing slurry, tailings and other media containing solid particles ‌
Sewage treatment: conveying sludge, high-concentration sewage, etc. ‌
Papermaking and chemical industry: control of viscous media such as pulp and chemicals ‌
Food and medicine: suitable for sanitary-grade piping systems, such as fruits, grains, etc. ‌

Drawing Of Pneumatic Operated Metal Seated Flange Knife Gate Valve:

Drawing Of Pneumatic Operated Resilient Seated Lugged Knife Gate Valve:

Operating Type Of Knife Gate Valve:

Uni & Bi-directional Of Pneumatic Actuated Knife Gate Valve:

Seat/Sealing Material Of Pneumatic Operated Knife Gate Valve:

Matching Air Accessories Selection For Pneumatic Ball Valve:

Pneumatic Actuator Accessories Options :

Single Acting & Double Acting Difference Of Pneumatic Actuator:

Principle Of Single Acting Pneumatic Actuator (Spring Return)
Counter - Clockwise	Clockwise
Air to port A forces the pistons outwards, causing the springs to compress, The pinion turns counterclockwise while air is being exhausted from port B.   Loss of air pressure on port A, the stored energy in the springs forces the pistons inwards. The pinion turns clockwise while air is being exhausted from port A.	Air to port B forces the pistons outwards, causing the springs to compress, The pinion turns counterclockwise while air is being exhausted from port B.   Loss of air pressure on port A, the stored energy in the springs forces the pistons inwards. The pinion turns clockwise while air is being exhausted from port A.

Principle Of Double Acting Pneumatic Actuator
Counter - Clockwise	Clockwise
Air to Port A forces the pistons outwards, causing the pinion to turn counterclockwise while the air is being exhausted from Port B.   Air to Port B forces the pistons inwards, causing the pinion to turn clockwise while the air is being exhausted from Port A.	Air to Port A forces the pistons outwards, causing the pinion to turn clockwise while the air is being exhausted from Port B. Air to Port B forces the pistons inwards, causing the pinion to turn counterclockwise while the air is being exhausted from Port A.

29 Years Valve Factory Founded In 1996:

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No Worries After Buy Our Valves With Our Engineers:

Frequently Asked Questions:

● Q1: ARE YOU A MANUFACTURER OR A TRADE COMPANY?

A1: We are a 29 years professional valve automation integration valve manufacturer, we produce and sale directly from our factory.

● Q2: IS THERE A TECHNICAL ENGINEER'S GUIDE FOR INSTALLATION BEFORE OR AFTER SALE?

A2: Yes, no worries. Our technical engineer will remote video, installation guide, commissioning valve.

● Q3: WHAT IS YOUR TERMS OF PAYMENT?

A3: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.

● Q4: WHAT IS YOUR TERMS OF DELIVERY?

A4: EXW, FOB, CFR, CIF, DAP, DDP. 

● Q5: HOW ABOUT YOUR DELIVERY TIME?

A5: Generally, it will take 2 to 5 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.

● Q6: DO YOU TEST ALL YOUR GOODS BEFORE DELIVERY?

A6: Yes, we have 100% test before delivery.

● Q7: HOW DO YOU MAKE OUR BUSINESS LONG-TERM AND GOOD RELATIONSHIP?

A7: We keep good quality and competitive price to ensure our customers benefit; we respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.