Ammonia stop valve， stop valve

Product characteristics

1, in view of the poor corrosion resistance of ordinary valves, the shortcomings of easy perforation of the shell, according to the specific characteristics of the medium, the ammonia special valve in the body material selection of corrosion resistant steel (carbon steel with corrosion resistant alloy elements), ammonia, liquid ammonia corrosion resistance, low temperature up to -40℃, to maximize the working conditions to ensure the use of requirements.

2. The sealing pair structure of ammonia globe valve adopts ball and flat type, sealing automatic compensation, achieving double insurance effect, stable sealing performance, no adhesive wear, effectively solving the problem of poor sealing performance and easy leakage of ordinary valves used in chemical pipelines.

3, the product flange adopts the mortise groove sealing structure, even in the case of pipeline pressure fluctuations, to ensure that the sealing of the flange is absolutely reliable.

4, the upper sealing device adopts multistage polytetrafluoroethylene sealing material to form a combined seal to ensure that the valve has no medium leakage in the stuffing box during the service life, eliminating the possibility of weak sealing of the ordinary valve stuffing box, easy leakage of the medium, and even causing accidents.

Working principle

When the ammonia stop valve is used, the cylinder main switch is opened first, and then the pressure adjusting screw of the low pressure gauge is turned clockwise to compress the main spring and drive the film, spring pad and ejector rod to open the valve. The imported high pressure gas enters the low pressure chamber after throttling and decompression from the high pressure chamber, and leads to the working system through the outlet. Turn the adjusting screw to change the opening height of the valve, so as to adjust the passage of high pressure gas and achieve the required pressure value.

Ammonia stop valves are designed for ammonia and gas pipelines or installations. Structural attention to fire requirements. The packing adopts polytetrafluoroethylene, which has reliable sealing and absolute leakage. The sealing auxiliary material adopts polytetrafluoroethylene or nylon to the body material of the valve body, which is a soft seal and reliable sealing. Suitable for ammonia gas, liquefied petroleum gas pipeline system, as a opening and closing device, but also suitable for other temperature ≤80℃ pipeline. Ammonia globe valve has the characteristics of stable sealing performance, safe and reliable use, strong corrosion resistance, no leakage in the medium and light operation. It is especially suitable for the transportation of ammonia and gas pipelines in the chemical industry, and meets the requirements of long-term reliable use.

Packing of Standard Packing: 

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 470 gallon liquid totes Special package is available on request. E FORUs’  is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.