Customized flame arrester breathing valve

PPH with dual pipe flame retardant breathing valve

Product Introduction:

PPH with connected flame retardant breathing valveWXF4 with nozzle PPH flame retardant respirator/PPH with exhalation nozzle flame retardant respirator valve/PPH with inhalation nozzle flame retardant respirator valve/PPH with exhalation inhalation nozzle flame retardant respirator valve/ZHQ with nozzle PPH flame retardant respirator valve/PPH with nozzle respirator valve/PPH respirator valve/PPH with double nozzle flame retardant respirator valve/PPH with double nozzle respirator valve/PPH with exhalation nozzle respirator valve/PPH storage tank respirator valve/PPH chemical anti-corrosion hydrochloric acid storage tank respirator valve/PPH with nozzle flame retardant respiratorIt is mainly used for atmospheric and low-pressure storage tanks (such as HCl/HNO3 storage tanks) that contain volatile chemical substances that are not allowed to leak. It is fixed at the top of the tank as a ventilation device to ensure that the pressure inside the tank is in a normal state, prevent the tank from being damaged by positive and negative pressure, and reduce the loss of liquid evaporation inside the tank.

Comprehensive parameters:

1. Suitable for various materials such as petroleum, chemical, pharmaceutical, energy, special liquids or gases.

2. Operating pressure:

A、-295Pa(-30mmH2O)/+355Pa(+36mmH2O)

B、-295Pa(-30mmH2O)/+980Pa(+100mmH2O)

C、-295Pa(-30mmH2O)/+1750Pa(+180mmH2O)

3. Temperature: -10/70 ℃.

4. Shell material: PP, PPR, PPH.

5. Valve disc and seat materials: PP, PPR.

6. Sealing material: polytetrafluoroethylene.

7. Flange standards: If customers require GB, SH, HGJ, JB, ANSI, JIS and other standards or change the pressure rating, please specify.

8. Manufacturing and testing standards: Manufacturing and acceptance shall be carried out in accordance with standards such as SY7511-87 for oil tank breathing valves, GB5908-86 for fire resistance performance and test methods for oil tank flame arresters, or customer standards.

Installation and maintenance:

1. The breathing valve is installed at the highest point of the oil storage tank to reduce material evaporation loss and maintain pressure balance inside and outside the tank. Generally, for vertical oil tanks, the breathing valve is installed within the central range of the tank roof; For storage tanks that require insulation on the top of the tank, the breathing valve can be installed near the ladder platform.

2. When the breathing valve leaves the factory, a plastic protective cover is used for the flange sealing surface to prevent damage during transportation. When installing it on site, the flange protective cover must be removed and installed vertically on the top of the storage tank. The breathing valve cannot be placed horizontally or upside down. If two plastic breathing valves need to be installed on the top of the tank, the breathing valves should be installed symmetrically with the center of the tank top.

3. The installation of the breathing valve on the storage tank usually takes 1-3 months. It is necessary to regularly check whether the positive and negative pressure valve discs of the breathing valve work flexibly. When the breathing valve is working normally, it will make a "hiss hiss" sound to release pressure and exhaust gas. Otherwise, the valve cover on the top of the breathing valve needs to be opened to check whether the valve disc of the breathing valve has a "chuck" phenomenon. Is there any dirt on the guide rod? If so, clean the dirt in a timely manner to ensure the smooth operation of the guide rod. Check for wear on the sealing surface of the valve seat. If there is wear, replace it immediately to ensure the normal and safe operation of the breathing valve.

4. The positive and negative pressure valve discs of the breathing valve constantly change and move up and down according to the pressure inside the tank. After three years of use, it is generally necessary to replace the sealing surfaces of the valve disc, guide rod, and valve seat inside the plastic PP breathing valve to ensure its normal operation and maintain the safe operation of the storage tank.

Henan Maoxing Valve mainly produces and sells【PPH with connected flame retardant breathing valveWXF4 with nozzle PPH flame retardant respirator/PPH with exhalation nozzle flame retardant respirator valve/PPH with inhalation nozzle flame retardant respirator valve/PPH with exhalation inhalation nozzle flame retardant respirator valve/ZHQ with nozzle PPH flame retardant respirator valve/PPH with nozzle respirator valve/PPH respirator valve/PPH with double nozzle flame retardant respirator valve/PPH with double nozzle respirator valve/PPH with exhalation nozzle respirator valve/PPH storage tank respirator valve/PPH chemical anti-corrosion hydrochloric acid storage tank respirator valve/PPH with nozzle flame retardant respirator】We have a large inventory of spot goods available for direct sales at factory prices! We have always adhered to the concept of "reasonable price and thoughtful service", striving to provide reliable products and comprehensive after-sales service for our customers. All text, data, and images in this article are for reference only.