RT12A211ENB

The RT12A211ENB valve is part of the Pressure Control Valves series produced by Vickers for hydraulic automation systems that must moderate line pressure during load changes. It is a hydro-cushion pressure control unit, so it absorbs pressure peaks and smooths actuator motion when flow is suddenly restricted. Direct operated construction lets the spool react without pilot flow delays, giving immediate damping of transient surges. An external drain routes bypass oil directly to tank, preventing back-pressure from influencing the set point. Lubricating oil is specified as the operating fluid, allowing the internal moving parts to remain coated and minimizing wear during continuous cycling. The valve includes a pilot piston that senses inlet force and meters the opening area with proportional accuracy, while the single 1-1/2 inch female pipe thread port supports high-volume circuits found in presses and large mobile platforms.

Threaded connections make installation straightforward and permit the RT12A211ENB to be screwed directly into manifolds or line tees without additional flanges, reducing assembly time in field service. The valve maintains reliable function only when the hydraulic medium meets ISO 20/18/15 cleanliness, so upstream filtration is required to keep the damping orifice free of particulate blockage. A maximum operating pressure rating of 2000 psi defines the highest system load the device can withstand while still maintaining stable cushioning behavior. Because its construction is optimized for that pressure class, using the valve above the rating would jeopardize seat integrity and pilot alignment. Each of these parameters ensures consistent performance in circuits that demand controlled deceleration of cylinders or motors once the desired pressure threshold is reached.