A27W-10T Safety Valve Spring Micro-Opening Wrench Type Threaded Relief Valve

A27W-10T is spring loaded micro-opening safety valve with red manual lifting wrench and external thread connection. Body HT200 grey cast iron, copper seat, spring 50CrVA. When pressure inside pressure vessel or pipeline exceeds set pressure, valve opens automatically for pressure relief; auto closes when pressure drops to safe value. The wrench allows on-site manual test to check valve stuck. Suitable for air, saturated steam, water, max working temperature ≤200℃, PN10. Widely used for air compressor tank, small boiler, heat exchanger and low pressure vessel as overpressure protection. Comply with GB, JIS, ASME standards, DN15-DN50 in stock, custom set pressure available.