一、Product Introduction
The DIN JIS 10K ANSI GOST Cast Steel Flange Pneumatic Knife Gate Valve is a high-performance fluid control equipment integrating multi-standard flange compatibility, cast steel structural strength and pneumatic drive efficiency. It takes a sharp knife-shaped gate as the core closing component, uses compressed air as the power source to drive the pneumatic actuator, and realizes rapid cutting and on-off control of fluid media through the linear movement of the gate.
This valve is specially designed with flange interfaces that comply with international standards such as DIN (German Industrial Standard), JIS (Japanese Industrial Standard), ANSI (American National Standard) and GOST (Russian National Standard), making it widely applicable to global industrial scenarios including mining, coal washing, papermaking, textile, chemical industry, sewage treatment and power generation. It is particularly suitable for handling media containing solid particles, fibers or viscous materials (such as coal slurry, pulp, sludge, slag water), and can effectively avoid blockage and ensure smooth operation of the pipeline system.
二、Product Features
-
Multi-Standard Flange Compatibility: The flange end is precision processed in strict accordance with DIN, JIS 10K, ANSI and GOST standards. It can be directly matched with pipelines of corresponding standards in different countries and regions without additional adapter components, greatly improving the flexibility of global procurement and project application, and reducing the cost of pipeline connection adaptation.
-
High-Strength Cast Steel Structure: The valve body, gate and flange are made of high-quality cast steel materials (such as WCB, WC6, WC9). After quenching and tempering heat treatment, they have excellent mechanical strength, impact resistance and pressure-bearing capacity, which can adapt to harsh working conditions such as high pressure, heavy load and frequent switching, and effectively extend the service life of the valve.
-
Sharp Knife-Shaped Gate for Anti-Clogging: The gate adopts a precision-ground sharp knife edge design, which can quickly cut off media containing solid particles, long fibers or viscous substances during the switching process, avoiding the phenomenon of media winding or blocking the gate. The gate and valve seat are closely fitted, and the self-cleaning function during movement can prevent residual media from accumulating, ensuring reliable sealing.
-
Efficient and Stable Pneumatic Actuation: Equipped with a heavy-duty pneumatic actuator (single-acting or double-acting), the valve has a sensitive response and can complete the opening and closing action in 2-8 seconds. The actuator is equipped with a built-in buffer structure to avoid impact damage to the gate and valve seat during rapid movement. It supports linkage with PLC, DCS and other automatic control systems to realize remote centralized control and improve production efficiency.
-
Excellent Sealing Performance & Wear Resistance: The valve seat adopts elastic materials such as reinforced EPDM, FKM or PTFE, which have good corrosion resistance and sealing performance. The gate surface is treated with hard chrome plating or spray welding (such as Stellite alloy), which significantly improves wear resistance and corrosion resistance, ensuring long-term zero leakage under harsh media conditions.
三、Technical Data
|
Parameter Item
|
Specification Details
|
|---|---|
|
Valve Material
|
Valve body/gate/flange: WCB (carbon steel), WC6/WC9 (alloy steel); Seat: EPDM, FKM, PTFE; Actuator shell: Aluminum alloy (anodized) or cast iron
|
|
Flange Standard
|
DIN EN 1092-1, JIS B2220 (10K), ANSI B16.5, GOST 12815-80; Other standards customizable
|
|
Nominal Diameter
|
DN50-DN600 (2″ – 24″), special specifications for large diameter (DN800-DN1200) customizable
|
|
Nominal Pressure
|
PN10-PN40, Class 150-Class 300, JIS 10K-20K, GOST 1.25MPa-6.3MPa
|
|
Working Temperature
|
EPDM seat: -20℃ – 120℃; FKM seat: -20℃ – 200℃; PTFE seat: -40℃ – 260℃; Metal seat (optional): -40℃ – 450℃
|
|
Medium Type
|
Slurry (coal slurry, ore slurry), pulp, sludge, sewage, viscous liquid, liquid containing solid particles/fibers, low-concentration acid-base solutions, steam (for high-temperature models)
|
|
Actuator Type
|
Double-acting pneumatic actuator; Single-acting pneumatic actuator (spring return, fail-open/fail-closed optional)
|
|
Actuation Pressure
|
0.4-0.8MPa (compressed air, dry, oil-free and filtered recommended)
|
|
Switching Time
|
DN50-DN100: 2-3s; DN150-DN300: 4-5s; DN350-DN600: 6-8s; Adjustable with speed control valve
|
|
Sealing Performance
|
ISO 5208 Class V (for soft seat); ISO 5208 Class IV (for metal seat); Zero leakage for liquid media under rated conditions
|
|
Connection Type
|
Flange connection (complies with DIN/JIS/ANSI/GOST standards); Optional wafer connection for small diameter models
|
|
Control Signal
|
On-off signal (standard); Optional 4-20mA current signal (with intelligent positioner for regulation)
|
|
Protection Grade
|
Actuator: IP65; Optional IP67/IP68 for harsh environments (such as underwater, dusty areas)
|
|
Certification
|
ISO9001, CE, API 600 (optional), GOST certification (for Russian market)
|
