p40 control valves manual


The p40 control valves produced by Hanjiu are integral structural valves developed on the basis of currently popular products. On the basis of inheriting the original technical advantages, some unreasonable parts of the product have been innovatively transformed. In this way, the quality of its valves has been improved to a new level, and the price is set lower than most brands to sell to the world. Today we mainly talk about the maintenance of valves.


The manual or mechanically controlled hydraulic directional control valve p40 is designed to distribute and control the work flow between generators (pumps) and actuators (cylinders, hydraulic motors, etc.). It is manufactured from 1 to 7 plungers with parallel or series action, each plunger has a common or separate rear valve, with or without a safety valve. The check valve inside the valve body is to ensure that the hydraulic oil is not returned to the oil, and the relief valve inside the valve body can adjust the working pressure of the hydraulic system. The control methods include manual control, pneumatic control, hydraulic and electric control, which can be selected according to your own needs, as a whole structure.


After the introduction of some previous articles, you should have some understanding of the p40 control valves manual series launched by Hanjiu Technology Co., Ltd. After we buy the valve for home use, how should we maintain it? Here are some suggestions for you:

1. The valve should be stored in a dry and ventilated room, and both ends of the passage must be blocked.

2. Regularly check the valves stored for a long time, remove the dirt, and apply anti-rust oil to the processing surface.

3. After installation, it should not be ignored. It should be checked regularly. The main inspection items are: wear of the sealing surface, wear of the thread of the valve stem and valve stem nut, whether the packing is outdated, if it is damaged, it should be replaced in time. After the valve is repaired and assembled, it should be sealed. performance test.

There are also some precautions for valves: the valve in operation, various valve parts should be complete and intact. Bolts on flanges and brackets are essential, and the threads should be intact and not allowed to loosen. If the tightening nut on the handwheel is found to be loose, it should be tightened in time to avoid abrasion of the connection or loss of the handwheel and nameplate. If the handwheel is lost, it is not allowed to replace it with an adjustable wrench, and it should be matched in time. Stuffing caps are not allowed to be tilted or have no preload clearance. For valves susceptible to environmental influences such as rain, snow and dust, a protective cover should be installed. The scale on the valve should be complete, accurate and clear. Valve lead seals, covers, pneumatic accessories, etc. shall be intact. The insulating jacket shall be free of dents and cracks. It is not allowed to knock, stand or support heavy objects on the valve in operation, especially non-metallic and cast iron valves.


If your valve encounters some maintenance or repair problems not mentioned in the article, please visit Hanjiu Technology's website www.hjhydraulic.com to contact them, they will answer your questions.



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