Customized Gate Valves Privatehá 1 mês - Multimedia - Nacala - 43 views
Price: -- MT
|Bright Stem Gate Valve (Xingfeng Valve Co., Ltd.)|
Product name: Bright stem gate valve
Product model: Z41H
Nominal diameter: NPS 2 鈥?锝?NPS 32 鈥?DN50 锝?DN800
Pressure range: CLB150 锝?CL2500 PN10 锝?PN420
Working temperature: -196 鈩?锝?+ 600 鈩?/p>
Scope of application: tap water, sewage, construction, petroleum, chemical, food, medicine, textile, power, marine, metallurgy, energy systems, etc.
Body material: carbon steel, stainless steel, alloy steel
Open-rod gate valves are also wedge-type gate valves. They have the same functions and applications. Different occasions will use dark-rod gate valves.
The difference between bright stem gate valve and dark stem gate valve:
1. Bright stem gate valve: Appearance: The screw is exposed and has a gate-shaped bracket. The stem nut is on the handwheel or bracket, and the nut and handwheel are fixed. When turning the handwheel to open and close the gate, the screw and the gate are lifted together by the rotation of the stem nut at a fixed point (the screw and the gate are integrated without relative displacement). Simply put, the gate is connected with the valve stem to make up and down movement. The advantage is that this structure is beneficial to the lubrication of the valve stem, and the degree of opening and closing can be observed.
2. Dark stem gate valve: Appearance: The screw is built-in and cannot be seen. The valve stem and handwheel are fixed. The stem nut is in the valve body, fixed on the brake plate, and in direct contact with the medium. When turning the handwheel to open and close the gate, the nut and the gate are lifted together by the rotation of the screw at a fixed point (the nut and the gate are integrated without relative displacement). Simply put, the valve stem does not move, and the shutter moves up and down by itself. The advantage is that the height of the gate valve always remains unchanged, so the installation space is small, which is suitable for gate valves with large diameter or restricted installation space. This structure should be equipped with an opening and closing indicator to indicate the degree of opening and closing. The disadvantage is that the stem thread cannot be lubricated, and it is directly damaged by the medium.
Summary: The difference between bright stem and dark stem gate valves is mainly due to the different connections between the stem and the handwheel. Ming stem gate valve: After opening, the stem rises with the gate, higher than the handwheel, you can see whether the valve is open, closed, and how much it is open. Concealed gate valve: After opening, the gate is lifted by itself, the valve stem does not move, and the height does not change. You cannot see whether the valve is open or closed and how much. Advantages: The installation height is much lower than that of the open stem valve, which is suitable for special places when the space and space are limited.Customized Gate Valves