A multi-turn valve which has a gate-like disk and two seats to close the valve. The gate moves linearly, perpendicular to the direction of flow. This type of valve is normally used in the fully opened or fully closed position; it is not suited to throttling applications. Gate valves provide robust sealing, and are used extensively in the petrochemical industries. This class of valves also includes knife gate valves, conduit gate valves and
wedge gate valves. Knife gate valves have much thinner gates with knife-like edge, making them suited to use with floating solids, e.g., as in the pulp & paper industries. Conduit gate valves have a rectangular disk as the closing element. one
half of the disk is solid, to close the valve, the other has a circular port, which can be used to open the valve.
Wedge gate valves have a wedge-shaped gate which "wedges" between floating seats to close the valve tightly.

The above attached product's specification is as follow:

BB OS & Y structure
Flanged or Butt-welding Ends
Manufacture in accordance with API 6D or API 600
Face to face/End to End Dimensions to ANSI B 16.10
Flange Dimensions to ANSI B 16.5
Butt-welding End Dimensions to ANSI B 16.25
ValveTested to API 6D or API 598

Product Main Usage
API Gate Valve are suitable to pipes which use Class 150∼300Lb and working temperature is no more than 425 in water ,steam, Oil. It is a open-close device to control medium.

Product Construction
1. Conform to domestic and abroad advanced standard requirement, reliable seal, perfect performance, good figure.
2. Wedge disc, seat seal face adopt iron alloy or stellite, wearable, anti-high-temperature, rust- proof, non-scrape, long life usage.
3. Use wedge flexible disc, large and middle diameter valve use relating bearing, flexible snitch, on- off is easily operated.
4. Stem is nitrified, gear rust- proof, non-scratch and wearable.
5. Suitable for all kinds of fitting, flange and flange seal face, meat all kinds of project application and clients' requirement.
6. Large scale of body material for selection, packing and gasket is adoptable according to actual situation or clients' requirement, applicable for all kinds of pressure rating, temperature and media