- Forging steel check valve storage environment should be noted, should be stored in a dry and ventilated room, and block both ends of the passage.
- The forged steel check valve should be inspected regularly, and the dirt on it should be removed, and the anti-rust oil should be applied on the surface.
- Forged steel check valves after installation should be regularly inspected to ensure their normal operation.
- Check the valve sealing surface for wear and repair or replace it according to the situation.
- Check the trapezoidal thread wear of the valve stem and stem nut of the forged steel stop valve, whether the packing is out of date, etc., and make necessary replacement.
- Test the sealing performance of the valve to ensure its performance.
- The valve in operation should be in good condition, the bolts on the flange and the bracket are complete, the thread is not damaged, and there is no looseness.
- If the handwheel is lost, it should be timely and not replaced by a spanner wrench.
- The packing gland is not allowed to be skewed or has no pre-tightening clearance.
- If the valve is used in a harsh environment and is susceptible to dirt such as rain, snow, dust, sand, etc., a protective cover should be installed for the valve stem.
- The scale on the forged steel stop valve should be complete, accurate and clear, and the valve seal and cap.
- The problem of depression and crack of the insulated forged steel stop valve.
- Forging steel check valve in operation, avoid knocking on it, or supporting heavy objects.
The passage of the forged steel check valve fluid through the lift check valve is also narrow, so the pressure drop through the lift check valve is larger than that of the swing check valve, and the flow rate of the swing check valve is limited. Very few. Check valves are generally suitable for cleaning media and should not be used for media containing solid particles and high viscosity.
The upper part of the valve block of the forged steel check valve and the lower part of the valve cover are machined with a guide sleeve, and the valve guide can be easily lifted and lowered in the valve guide. When the medium is downstream, the valve flap is opened by the medium thrust, when the medium stops flowing. The valve flap descends from the sag on the valve seat to prevent the medium from flowing backward. The direction of the inlet and outlet passages of the straight-through butterfly check valve is perpendicular to the direction of the valve seat passage; the vertical lift check valve has the same direction of the medium inlet and outlet passages as the valve seat passage, and its flow resistance is smaller than that of the straight-through type.
In a few days you have money, the factory is not necessarily in stock,
In a few days, the factory is in stock, and logistics does not necessarily go to work.
Transporters do not necessarily go to work! Re-willfulness is also useless.
Dear, the Spring Festival is approaching, the factory is on holiday, the logistics and transportation department are resting.