China Vihung Valve Co., Ltd. products

Trunnion valves have mechanical anchoring of the ball at the top and the bottom to avoid axial displacements in the flow direction. During normal operation pressure compresses the seat onto the ball to achieve valve sealing, such construction also ensures automatic cavity relief in case of overpressure in body cavity. As isolation valves, they intercept the flow by opening and closing the port and are mainly recommended on tight shut-off gas and liquid services; trunnion control valves with cage trim are engineered for those services where continuous pressure and flow rate regulation are required.

Fully Welded Trunnion Ball Va(ve,The valves suitable for Oil & Gas production, processing, transportation, distribution, chemical and petrochemical refining on above ground and below ground installations.

Trunnion Ball Valves Side Entry Modular Body (DBB),The valves suitable for Oil & Gas production, processing, transportation, distribution, chemical and petrochemical refining including system isolation, pressure level and flow measurement, instrument drain, chemical injection and sampling for smaller sizes.

Trunnion Ball Valve Top EntrySpecial valve constructions to allow easy on-site maintenance and disassembly with quick access to ball and seats for inspection and repair.

Floating Ball Va(ves,The ball in a floating valve is not held in place by a trunnion and flows downstream slightly, allowing the seating mechanism. VIHUNG floating ball valves are suitable for a wide range of applications with sizes typically between W to 8E supporting low and medium pressures. VIHUNG production range includes special floating ball valves suitable for severe services with larger sizes and higher pressures, single seated design eccentric ball types.

VHV Bolted bonnet Gate valves serve as ON-OFF application valves just as a standard gate valve serves as a bidirectional valve which assists flow in either direction. With the help of wedging action, it serves as an effective seal against the flow. The valve, during its full open condition, forms a through conduit without any obstruction. This helps with smooth flow and less pressure drop. VHV Gate valves are heavy duty, outside screw and yoke type, bolted bonnet, rising stem, and non-rising handwheel type. The straight through bore design assures minimum turbulence, erosion and resistance to flow. These valves are handwheel operated or gear operated depending upon the size.

VHV Bolted Bonnet Globe valves are heavy duty, outside screw and yoke type, bolted bonnet, rising stem, and rising handwheel type. These valves are highly efficient for service requiring frequent operation and throttling. These valves are handwheel operated or gear operated depending upon the size. Globe valves are generally considered for moderate control and regulation of fluid flow.

VHV Bolted bonnet Swing Check valves are heavy duty, bolted covers, renewable seat ring, internally body mounted disc arrangement. These valves are unidirectional and restrict flow in the opposite direction. These valves are best suited for moderate velocity conditions. Check valves are normally designed for horizontal flow conditions but can also be installed in vertical pipelines, but in vertical pipelines, the flow should be in an upwards direction and under the disc.

API 6D Axial flow check valves are a type of non return valve, designed to avoid the quick reverse of a flow in a pipe known as "water hammer1 that may cause severe damage in the different equipments of a pipping system. This kind of valves close fast enough without creating excess pressure spikes, avoiding slamming.

Metal Seat Dual Plate Check Valve is an all purpose non return valve that is much stronger, lighter in weight and smaller in size compared to a conventional swing check valve or life check valve. The Dual Plate Check Valve employs two spring-loaded plated hinged on a central hinge pin. When the flow decreases, the plates close by torsion spring action without requiring reverse flow.This design offers the twin advantages of No Water Hammer and Non Slam simultaneously. All features put together make the Dual Plate Check Valve one of the most efficient design. We have rubber seat dual plate check valve for low pressure and normal temperature, with wonderful sealing performance,and also the metal seat dual plate check valve for severe working conditions,high temperature,high pressure,hard working conditions.