Available in emergency pressure only and emergency pressure and vacuum relief models.
Cast metal cover provides added strength and extended life.
Hinged cover provides a fixed pivot point, ensures proper reseating and added safety.
Cover cannot separate from the base.
Easily lifted open to provide a large, unobstructed passage for easy tank access.
221PV incorporates a spring loaded vacuum relief valve integral to the cover assembly.
Weather hood and screen provided for protection.
Non-metallic seat insert on the pallet minimizes leakage.
Durable reinforced fabric diaphragm type pressure side seating surface backed by compressible, cellular non-metallic pads for added cushion and reduced leakage.
Optional materials available to suit most chemical applications.
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