Rising Stem with guide groove, bolted or pressure seal boonnet, fire safe and anti-static, Double Block and Bleed DBB function, zero leakage, sealing without contact friction when switching, optional with bypass balanced pressure design, operation torque is light.
Material: Carbon Steel, Stainless Steel, Alloy Steel
Nominal Size: NPS 2"~24",DN50~600 Pressure Rate: Class 150~1500,PN 10~250
Pressure Rate: PN16～PN420,CLass150～CLass2500
Temperature Range: -46℃~+200℃
Operator: Manual, Pneumatic,Electric, etc...
Application range: Cut off or connect the pipeline medium on the pipelines of various working conditions such as petroleum, chemical,
pharmaceutical, fertilizer, and electric power industries.
◎ Design Standard: API 6D,API 599, ASME B16.34,GB/T1224,GB/T20173,GB/T19672
◎ Pressure Temperature Rate: ASME B16.34,GB/T 12224
◎ Face to Face: ASME B16.10,GB/T 12221,EN558
◎ Flange Standard: ASME B16.5, ASME B16.47,GB/T9113, JB/T79, HG/T 20592, EN 1092
◎ Butt Weld Standard: ASME B16.25,GB/T 12224
◎ Fire Safe: API607
◎ Pressure Test: API598,GB/T13927
The Non-Rising Stem Gate Valve is also called the rotating stem gate valve. Stem and nut are arranged on the gate plate, handwheel rotation drive valve stem rotate to lift the gate, usually there is a trapezoidal thread at the bottom of the valve stem and the rotation movement is turned into a linear motion through the limit slot between the valve stem and the gate body and the gate body and the gate, that is, the operation torque is turned into operation thrust. When the valve is turned on, when the height of the gate is equal to the diameter of the valve 1: 1: 1, the channel of the fluid is completely unblocked, but at the run, this position cannot be monitored. In actual use, the vertex of the valve stem is used as a sign, that is, the position that is unmoved as its full opening position. The non-rising stem gate valve has the design characteristics of the ordinary wedge-type gate valve. The valve body has a guide mechanism, which can prevent the gate from rotating when the gate is turned on or closed, ensuring that the seal of the gate on the valve seat is accurate accordingly. At the same time, the wedge valve does not rub with the valve seat before turning off, thereby reducing the wear of the cover and effectively extending the service life of the valve.
An energy-saving multi-combination control valve without external energy sources, used for flow and temperature control devices for non-corrosive liquids with a maximum temperature of 350℃, as well as pressure and differential pressure control devices, and flow and pressure control devices for liquids, gases and steam.
The globe valve is mainly composed of valve body, valve cover, valve disc, valve stem and valve stem nut. The handwheel applies a certain torque on the upper end of the valve stem, and passes the valve stem to the valve petals to move it along the valve stem axis to achieve full or full-closed motion. The force applied by the handwheel can be obsessed with the valve seat to reach the stagnation state. The two-valve petals are designed to enter the top of the medium from the cover of the valve petals. The force force of the medium is the same as the valve closure direction, so the torque of the valve closure is small; The petals, the medium enters the exit of the valve from the inside, and generates a small amount of balance of the pressure of the pressure on both ends of the valve inlet and export, thereby achieving the effect of reduced the valve opening torque. Therefore, globe valve(double disc) is mainly used in high pressure or large-caliber pipelines. At the same time, the globe valve does not rub with the valve seat before the valve is closed, thereby reducing the wear of the cover surface and effectively extending the service life of the valve.