■ HINGE PIN
The hinge pin is inserted into the valve body to achieve pressure sea lconstruction.
■ COVER
The cover material is a steel forging identical to the body to insure high dependability. The cover construction has a perfect body-cover tightness and ease of dismantling and reassembly are ensured.
■ DISC
The disc has a sufficient seating surface area which is ground and lapped to a mirror finish. It is of one-piece construction and is heat treated to deliver the required mechanical properties and hardness.
■ SEAT RING
The Stellite 6 surface of the seat ring is integrally applied to the body by means of welding in all valve sizes.
Perfect mating with the DISC surfaces attained by a lapping finish applied to the seating.
■ BODY
The cylindrically shaped valve body prevents distortion or undue stress under extreme working conditions. Padding is also provided to achieve a sound cast structure in the critical areas. The wall thickness is greater than, or in accordance with, API, ANSI and ASME requirements. The area contacting the pressure seal gasket has a stainless steel 18/8 inlay to eliminate corrosion or wire drawing. The close tolerances of the inside
diameter of this area are attained by accurate machining and honing finish.
