The knife gate valve controls the flow and cut-off of the medium based on the vertical movement of the gate plate. When the valve needs to be closed, the driving device (manual, electric or pneumatic) drives the valve stem to move downward, making the gate plate move downward along the guide rail of the valve…
Gate valves shall be of the OS&Y or IS&Y type. OS&Y stands for Outside Screw and Yoke. When the handwheel of the OS&Y gate valve is rotated to open the valve, the valve stem will rise.Here are some examples of OS&Y gate valve specification parameters: ASME B16.10, API 602, ASTM A182-F304, TRIM.15-HF, CL150, BB and…
As two essential types of valve in industrial and civil pipeline systems, globe valves and gate valves both play a crucial role in controlling the flow of fluids. However, they have their own characteristics in regards of structure, operating principle, and applicable scenarios. Analysis of the similarities and differences between the two will provide us…
In a fluid pipeline system, valves are essential parts, playing a crucial role in the controlling of flow rate, pressure, and flow direction of the fluid. Among verious types of valves, butterfly valves and gate valves are sure two common choices. However, there are many differences between both valves in terms of appearance, structure, working…
1.The structure of block valve and gate valve Notes for the type selection in the case of limited installation space The gate valve can rely on the medium tightly pressing on the sealing surface, so as to achieve the nonleakage. However, the spool constantly scrapes the sealing surface of the seat, which easily wear the…
Butterfly valves and gate valves are both common industrial valves, and there are some differences between them in regard of structure and working principles. 1.Different structures between a butterfly valve and a gate valve. A butterfly valve is a valve that uses a disc-shaped plate as a flow cutting element. The valve plate rotates around…
1.Features of the cast steel gate valve The cast steel gate valve has low fluid resistance, and the sealing surface is less eroded by the medium, with easy opening and closing. The flow direction of the medium is not restricted, the flow is not disturbed, and the pressure is not reduced. The structure is simple,…
Ball valve and gate valve are two of the most commonly used valves for controlling the flow of fluid in plumbing or gas systems. These valves have similarities in application, but have different strengths to offer. This guide reviews the key differences between ball valves vs. gate valves, giving you the reference to choose the…
Among the usual structural designs of single-gate, double-gate, wedge, parallel and so on, the wedge double-gate and the wedge elastic gate are the most widely used ones. The former’s gate automatically coincides with the two sides of the seat, while the latter relies on the elastic groove in the middle of the gate wedge to…
Gate valve，for its low fluid resistance, a minor pressure differential, the flow direction maintenance ability, erosion endured sealing surface and flow noninterference, can be applied with a wide range of pressure and temperature. As a common block valve, it is widely used in the oil media of petroleum, chemical, fossil-fuel power plants and in the…
The double cut-off slab gate valve with diversion hole is mainly used to cut off the medium. It is a kind of pipeline valve, which is used in many industries, such as natural gas, oil, etc. Main features of slab gate valve Working principles of double block drain valve seat When the valve is closed,…