logo

■ Basic design : ASME B16.34, API 600, Intergral / Renewable seat type
■ Flange drilling : ANSI B16.5 (2″~24″)
■ Face to face : ANSI B16.10
■ Test : API 598

① BODY The body of the high pressure gate valve is designed as an one piece casting, with smooth inside contour providing maximum flow efficiency.
The body has an integral casting guiding system to guide the wedge full throught the valve stroke.
The pressure seal type gate valve is designed with 4 holes in the neck at the region of the segmental retainer for a proper disassembly.
The contacting surface the pressure seal gasket outside has a stainless steel 18-8 inlay to assure soundness and corrosion resistance for carbon and alloy steel valves.
The body is seal welding for body seatrings.

② DISC The disc is circumferentially symmetrical in order to ensure a complete distribution of forces and to ensure that possible irrgularities of alignment can be compensated.
The disc design is based upon the elasticity of the wedge material.
The disc contacting surface with deposit stellite no.6 hard facing is ensured by pressure tightness and freedom from sticking.
It is connected to the stem by means of a T-joint.
Special attention is given to the seating surfaces which are ground and lapped to ensure a perfectly tight seal

③ BONNET The bonnet is designed and manufactured in order to ensure a perfect seal, as well as to allow for easy dismounting and reassembly.
A longer packing life is ensured by a condensation chamber inserted between the backseat and the packing.

④ STEM The non-rotating rising stem has trapezoidal thread.
The stem is ground to minimize friction and prevent damage to gland packing.
The stem is jointed to the wedge by means of a T-connection which is an integral part of the stem itself.
The stemhead has a tapered shoulder for backseating purposes.

⑳ YOKE SLEEVE The yoke sleeve is made from cast austenitic ductile iron having high resistance to wear and a high melting point.
It is designed to permit removal from the bonnet or the yoke while the valve is in service.