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Class Power Plant Gate Valve
Product overview
Class power plant gate valve for pound class power station. One is the imported type according to ansib16.34 and jise101 standards, and the other is the national standard type according to jb3595 standard. It follows the same temperature pressure class, and there is some exchange relationship in some pipelines. In the middle part, the valve cover free pressure self tightening type is adopted, which has good sealing performance under high temperature and high pressure conditions. Self sealing ring has two materials, one is low carbon steel, the other is flexible graphite 316 wire (mesh). The upper layer of the sealing surface is welded with cobalt based cemented carbide, and the processed pure metal layer is more than or equal to 3mm, which has the advantages of wear resistance, high temperature resistance, corrosion resistance and long service life. Both ends of the branch pipe are welded structure, and the welding groove can be made according to the standard or user requirements. It is suitable for high temperature and high pressure water, steam, oil and superheated steam pipes in thermal power plant, petrochemical industry, metallurgy, etc.
Product Features
1. The gate valve of high temperature and high pressure class power station adopts advanced equal diameter straight through structure, which greatly reduces the flow resistance coefficient and energy loss, and significantly improves the service life and performance of the valve;
2. The middle chamber of the valve adopts pressure self tightening sealing structure with good sealing performance. Both ends of the branch pipe are welded structure;
3. The sealing surface of the gate and valve seat is made of Stellite cobalt base hardfacing, which has good wear resistance, high temperature resistance, corrosion resistance and scratch resistance;
4. After quenching and tempering and surface nitriding treatment, the valve stem has good corrosion resistance and scratch resistance;
5. The structure of the hoist can be designed as single plate, double plate and parallel double plate according to the user's requirements;
6. The opening and closing of electric gate valve is controlled by electric device, which is equipped with special motor, reducer, torque control mechanism, field operation mechanism, manual and electric switching mechanism. In addition to local operation, it can also be operated remotely.
Execution Standard
Design spec：JB/T 3595
Face to Face：GB/T 12221
Welding groove：JB/T 3595、GB/T 12224
Test & check：JB/T 3595、E101
Pressure-temp：JB/T 3595
Performance Parameter
Nominal diameter：NPS2½"~18"
Nominal Pressure：Class1500～3500Lb
Applicable media：Steam, water
Applicable temperature：≤590℃
Main materials：WCB、WC1、WC6、WC9
