DESCRIPTION FOR VA7 SERIES PILOT-OPERATED VALVE (5/3-WAY - CENTER POSITION)
The VA7 Series 5/3-Way Air Pilot-Operated Pneumatic Valve (Center Position) is a heavy-duty line designed for robust control of medium to large stroke actuators and cylinders. By combining a high flow capacity with the precise control of a 3-position valve, it becomes the ideal choice for the manufacturing industry and automated processes that demand safe intermediate stops and fast response using 100% pneumatic signals.
Main Features:
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Advanced Position Control (Center): Its three center configurations (Closed, Open/Exhaust, or Pressurized) provide full control over the piston in its rest state, vital for emergency stops or exact positioning.
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High Flow Capacity: Features optimized internal passages to move large volumes of air without drastic pressure drops, ensuring actuator force and speed.
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Intrinsically Safe Operation: Being actuated only by air pilots (without electricity), it is ideal for areas with explosion risk, high humidity, or heavy washdown.
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Flexible Mounting: Allows for direct individual in-line installation or centralized assembly using multiple bases (BM series manifolds) for high-density circuits.
Technical Specifications:
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Function: 5/3-Way (5 ports, 3 positions with spring return to center).
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Center Configurations: Closed Centers (C), Open/Exhaust Centers (E), and Pressurized Centers (P).
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Actuation Type: Double Pneumatic Pilot.
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Body Sizes: 100, 200, 300, and 400.
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Connection Ports: 1/8", 1/4", 3/8", and 1/2" NPT.
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Compatible Fluid: Compressed air filtered to 40 microns (lubricated or non-lubricated).
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Operating Pressure: 1.5 to 8.0 bar (22 to 115 psi).
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Materials: Die-cast aluminum body with stainless steel and aluminum internal components.