跳至主要内容

NAFCO | 20 Precautions for Brass Valve Installation

From: NAFCO | Brass Valves China Manufacturer
What attention should you need when installing brass valves? We have 20 tips for you.
Brass Ball Valves China
Brass ball valve
1. When installing the brass valve, it is necessary to clean the inner cavity and the sealing surface, and the connecting bolts are evenly tightened to check whether the packing is tight.
2. The brass valve during installation is in the closed state.
3, large-size gate valve, pneumatic control valve should be installed vertically, so as not to be biased to one side due to the large weight of the valve core, this will cause leakage.
4. There is a set of correct installation process standards.
Brass Gate Valves China
Brass gate valve
5, brass valves should be installed in accordance with the allowed working position, but must pay attention to the convenience of inspection and operation.
6. The installation of the shut-off valve should be such that the flow direction of the medium is consistent with the arrow marked on the valve body. For the brass valve that does not open and close frequently, and it is necessary to strictly ensure that it does not leak under the closed state, it can be reversed to make it with the pressure of the medium closed.
7. When tightening the compression screw, the brass valve should be in a slightly open state to avoid crushing the top sealing surface of the valve.
8. The low temperature brass valve should be opened and closed in the cold state as far as possible before positioning, requiring flexibility and no jamming.
Brass Swing Check Valves
Brass swing check valve
9. The liquid valve should be configured such that the valve stem is inclined at an angle of 10° to the horizontal to prevent the liquid from flowing out along the valve stem. More serious is to avoid leakage.
10. After the large-scale air separation tower is barely cold, the flange of the connected brass valve is pre-tightened in a cold state to prevent the leakage at a low temperature and the leakage at a low temperature.
11. It is strictly forbidden to climb the valve stem as a scaffold during installation.
12. After all the brass valves are in place, they should be opened and closed again, and the flexible and non-clamping phenomenon is qualified.
Brass Radiator Valves China
Brass radiator valves
13. Brass valves should normally be positioned prior to pipe installation. The piping should be natural and the position should not be hard to avoid the prestressing.
14. Non-metallic brass valves, some are hard and brittle, some have low strength. When operating, the opening and closing force should not be too large, especially not to make it strong. Also pay attention to the object collision.
15. When handling and installing brass valves, beware of accidents caused by bumps and scratches.
16. When the new brass valve is used, the packing should not be pressed too tightly, so as not to leak, so as to avoid the valve stem being pressed too much, accelerating wear and tear, and it is difficult to open and close.
17. Before installing the brass valve, make sure that the brass valve meets the design requirements and relevant standards.
18. Before installing the brass valve, the inside of the pipe should be cleaned to remove impurities such as iron filings to prevent the foreign body of the brass valve seal from being trapped.
19. When the high temperature brass valve is installed at normal temperature, after use, the temperature rises, the bolt expands and the gap increases, so it must be tightened again. This problem needs attention; otherwise it is easy to leak.
20. Install the brass valve to confirm whether the flow direction of the medium, the installation form and the position of the handwheel are in compliance with the regulations.
Brass Fittings China
Brass fittings used for brass ball valve installations
The above is the precautions when installing brass valves, hope it will be helpful for you..

评论

发表评论

此博客中的热门博文

NAFCO | Brass Gate Valve Installation

NAFCO | Brass Gate Valve Installation From: NAFCO | China Brass Valves Manufacturer 1. The installation of the gate valve must be carried out by qualified operators. The deviation of the different axial directions of the two ends of the pipeline must not be too large, otherwise excessive pipeline installation stress will be generated, resulting in failure and damage. The thread precision and effective length strictly enforce the ISO228-1 relevant standards.    When installing the screw, the hex or octagonal part of the same side of the thread should be clamped. The hexagonal or octagonal part of the other end of the valve should not be wrenched to avoid deformation of the valve. It must be made of Teflon tape or thread sealant seal.     2. To install the tightening valve, you must use the corresponding torque wrench or pipe wrench, and screw in the effective thread length. Do not excessively cause the inner end surface to be pressed, causing the s...
发表评论
阅读全文

NAFCO | 5 Negative Changes of China Brass Valve Industry in 2017

1, Sales decline, weak growth In the era of overcapacity, plumbing valve industry oversupply, the valve industry innovation, change lag, in the growth encountered bottlenecks and ceilings, if the business no new growth point, the major brand sales decline is a common phenomenon. 2, Price war The market demand for brass valves is red uced, in order to seize the market, each brand competition bargain, businesses profit are limited. The market shuffle will be inevitable.  China brass valve manufacturers  for  brass ball valves ,  brass gate valves ,  brass check valves , brass angle valves,  brass radiator valves ,  brass fittings  will face difficult time. 3, Brass Valve Industry shuffle Brass valve brand competition will become increasingly fierce in 2018, China brass valve suppliers without core competitiveness and service will be squeezed in the market. In the case of raw material prices and cost increase, non-competitive brass valve factories w...
发表评论
阅读全文

NAFCO | Definition and Structure of Brass Gate Valves

NAFCO | Definition and Structure of Brass Gate Valves Time:2018-08-02 From: NAFCO | China Brass Gate Valves Manufacturer Brass gate valves are one of the most commonly used plumbing valves for household application, just little smaller than brass ball valves. Brass gate valve is  metal-metal sealed valve and are currently widely used in water supply systems.    Today we're going to explain what is a brass gate valve, what's the structure of brass gate valves:     1. Definition and of Brass Gate Valves   Brass gate valves, also called brass disc valves, are valves in which the closing valve disc moves in the vertical direction along the centerline of the passage, used to turn the media on or off.   The brass gate valve is a control unit that moves the gate plate along the axis of the channel in the vertical direction and shuts off the medium flow control unit through the handwheel rotation drive. The utility model h...
发表评论
阅读全文