Pneumatic Sliding Gate Valve

Designed for reliable on-off control of dry bulk solids and powders in gravity-fed or pneumatic conveying lines, the pneumatic sliding gate valve stands out as a fundamental component across food processing, chemical, cement, and mining industries. Our range includes the widely specified Pneumatically Operated Gate Valve, which delivers enhanced linear actuation for applications requiring precise throttling and rapid shut-off. Each unit is engineered to minimize material leakage while withstanding abrasive media, high cycle rates, and demanding ambient conditions. With a full-bore design that eliminates flow restrictions, these valves maintain discharge consistency whether handling fine flour, granular plastics, or coarse aggregates. The air cylinder is directly coupled to the blade stem, reducing moving parts and ensuring straightforward maintenance without removing the valve from the line. Packing glands with self-adjusting live-loaded seals further extend service intervals, while optional limit switches and solenoid pilot valves simplify integration into automated process control networks.

The Pneumatic Sliding Gate Valve features a heavy-duty stainless steel or hard-chrome-plated blade that cuts through material head loads effortlessly. Its rigid cast iron or fabricated steel body can be configured with round, square, or rectangular flanges to match existing hopper, silo, or screw conveyor outlets. A fully enclosed bonnet shields the stem and actuator from dust ingress, while metallic or resilient seat options accommodate temperatures from -20°F to 500°F. The standard double-acting pneumatic cylinder operates on 80–100 psi plant air, and a manual override handwheel can be added for emergency operation. Blade deflection is controlled by precision-machined guide rails, which also protect the secondary packing from particulate contamination. Stroke adjustment stops allow fine-tuning of the open and closed positions, particularly useful for metering applications. For abrasive or sticky materials, specialized blade coatings and purge ports are available to prevent material buildup and extend component life.

• Body Materials: Cast iron (ASTM A126 Class B), 304/316 stainless steel, fabricated carbon steel
• Blade Materials: 304/316 stainless steel, hardened 17-4PH, chrome-plated carbon steel
• Seat Options: Metallic, EPDM, PTFE, Viton, UHMWPE
• Actuator Type: Double-acting pneumatic cylinder; spring-return failsafe configurations optional
• Operating Pressure: 60–120 psi (4–8 bar)
• Typical Sizes: 4" to 48" bore (DN100–DN1200)
• Flange Standards: ANSI 150#, PN10/16, custom pattern to match equipment
• Temperature Range: -20°F to 500°F (-29°C to 260°C) with appropriate seat selection
• Leakage Class: FCI 70-2 Class III or IV (metal seat), Class V (resilient seat)
• Position Indication: Mechanical limit switches, magnetic reed switches, NAMUR proximity sensors
• Certifications: ATEX, ISO 9001, optional NACE MR0175 for sour service