Gate valve product standard introduction

Gate valve product standard introduction
Core Tip: The standards of domestic manufacturers are not the same. For example, the lengths and production standards of American Standard Gate Valves produced by Shanghai Haogao Valve Co., Ltd., formerly Shanghai Minhang High and Medium Pressure Valve Factory and Shanghai Liangzhong Valve Factory.
The standards produced by major domestic manufacturers are not the same. For example, the lengths and production standards of American Standard Gate Valves produced by the Shanghai Min Gao Valve Co., Ltd. original Shanghai Minhang High and Medium Pressure Valve Factory and Shanghai Liangzhong Valve Factory are not the same. Forged steel gate valves often neglect pressure problems. During the grease injection operation, the pressure of the injection-regulating half-free float ball steam trap is changed by peaks and valleys. The pressure is too low, the seal leaks or the safety valve fails, the pressure is too high, the grease injection valve is blocked, the sealed grease is hardened, or the seal ring and the valve ball and the valve plate are locked. When the injection pressure is too low, the injected grease flows into the bottom of the valve chamber, which usually occurs in the small gate valve. The fat injection flow control valve pressure is too high, on the one hand to check the thermal insulation valve check grease injection mouth, if fat is blocked, the remote control float valve hole is closed and the spring is closed and the wrench is fully opened to replace; the other is a plunger stop valve on the one hand fat To harden, use a cleaning fluid, repeatedly soften the defective sealing grease, and inject new grease to replace it. In addition, the sealing type and the sealing material also affect the injection pressure. Different sealing types have different injection pressures. In general, the hard sealing pressure is higher than the soft sealing.

Steel wire welding machine

Steel wire welding machine wire drawing machine adopts servo motor wire drawing device to make wire drawing size more standard and accurate.
Variety of weldable mesh.
Zonal grid adjustment related parts are adjustable, by the adjustment of the grid microcomputer control, can set up different grids.

Performance characteristics of steel wire welding machine: the length of warp and weft wire of tunnel support network welding machine are pre-cut by straight cutting machine. The warp is manually placed to the feeding mechanism and automatically entered by the servo feeding trolley without manual placement.
The weft wire is manually placed into the discharging device by the turntable stripper and dropped by a single one.
The welding system adopts pulse triggered thyristor with 8-way voltage regulation, and 8-way output can be combined at will, so as to reduce the impact on power transformer and effectively improve efficiency.
The machine power system is divided into pneumatic type and mechanical type.
The whole machine adopts PLC centralized control. The touch screen is the external data input part. All parameters can be input by the touch screen.
Rebar mesh welding machine

Rebar Mesh Welding Machine

Wire Mesh Welding Machine,Fence Mesh Welding Machine,Rebar Mesh Welding Line,Wire Butt Welding Machine

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