What role does the valve block manufacturer tell you about the one-way throttle valve?

Saving valve and one-way saving valve is a simple flow control valve, valve block manufacturers in the quantitative pump hydraulic control system, saving valve and relief valve, can be composed of three kinds of saving speed control skills system, that is, the inlet circuit saving speed control system, the return circuit saving speed control planning system and the bypass saving speed control system. The saving valve does not have a flow negative feedback adjustment function, can not be compensated by the load change of the speed of the development of instability, generally only used for operating load to change the impact of little or the speed of the relatively stable safety requirements are not high occasions.

The fracture toughness test is carried out according to BS7448Part2, and the welded joint is commented on the possibility of no heat treatment after welding A, refer to the appendix DNV-OS-C401 specification of Norsk Verissovership...

Pipe valves are thoroughly welded with mechanical stress-smoothing methods that reduce residual stress levels throughout the body. The residual stress on the welding surface is eliminated by using ultrasonic stress (energy milligram).

The ball, seat, support plate, stem and other internal parts of all these pipelines are nickel-plated, and the thickness of the nickel-coated data is generally not less than 75μm. It can also be chrome plated according to user management requirements.

Inlet axis NC envelope ball grinding and grinding accuracy ball roundness <2μm, and detected on 3D post coordinate measuring machine.

The stem and the ball are independent, one end of the rod is planned into the overall structure of the closed ball, the gland flange can block the T-shaped rod, and the inner cavity is blown out to avoid pressure.

The antistatic equipment is planned according to the specifications of the control ball valve. The valve stem is equipped with a spring ground plug, so that the ball, the valve stem and the valve body are in contact with each other, forming a conduction road, which can transfer the charge through, and then avoid the valve control switch is a conflict problem affecting electrostatic accumulation or a fluid impact on the valve body cavity electrostatic accumulation. This use of static accumulation is an extremely important risk for pipelines in some associated risk areas.

Under normal conditions, the double O-ring gland graphite gasket is planned to avoid leakage at the valve stem. The O-ring and the valve body graphite gasket also ensure the tightness of the valve body and the cap connection. When a fire occurs and the O-ring fails due to dissolution, the gland graphite gasket, the valve body graphite gasket and the stem graphite packing will assume the function of preventing fluid leakage.