Double seat air vent valve 3A, 316L Stainless Steel
SY-AVV
Sangyie Double seat air vent valves are designed to protect pressure vessels, tanks or pipelines from excess pressure with two valve bodies, upper and lower. Double seat air vent valves should be installed on top of pressure vessels or tanks, or in front of pump. Widely used in heat exchanger, AI liquid cooling systems, food-processing, beverages, brewing, wine, dairy, cosmetic, personal care, pharmaceutical, biotechnology and semiconductor industries.
Quantity:
SangyieDouble seat air vent valves are designed to protect pressure vessels, tanks or pipelines from excess pressure with two valve bodies, upper and lower. Double seat air vent valves should be installed on top of pressure vessels or tanks, or in front of pump. Widely used in heat exchanger, AI liquid cooling systems, food-processing, beverages, brewing, wine, dairy, cosmetic, personal care, pharmaceutical, biotechnology and semiconductor industries.
Double seat air vent valve Operating principles
●When pressure in equipment is excess, ball in the valve will be lifted to upper valve body. The valve open and the air release out from the equipment
●When the equipment is vacuum, ball in the valve will move towards to lower valve body. The valve close.
**NOTE:
- The valve has to be installed vertical
- Density of medium has to be higher than ball’s
Double seat air vent valve Technical parameters
Stock size | 1" ~1.5", DN25 ~ DN40 |
MaxWorking temperature | PP, 90°C, 194°F EPDM,120°C,248°F |
Working pressure | 5bar, 72.5psi |
Pipe joint standard | DIN, SMS, BS / RJT, 3A, ISO / IDF, ASME / BPE |
Connection type | welded,clamped |
Materials
●Valve body EN 1.4301 (AISI 304), EN 1.4404, EN 1.4435(AISI 316L)
●Ball EPDM, PP
● Valve gasket EPDM, FPM,NBR
Application Sectors
●Dairy industry: Milk storage tanks, yogurt fermentation tanks, cream mixing vessels
●Beverage & food: Juice, wine, beer, syrup, edible oil, sauce processing tanks
●Pharmaceutical & biotech: API preparation tanks, sterile liquid storage, cell culture bioreactors
●Cosmetic & personal care: Lotion, essence, cream, shampoo blending tanks
●Water treatment: Purified water, WFI (Water for Injection) storage and distribution systems
●Cooling systems
Applicable Media
Liquid materials, viscous slurries, low-concentration acid/alkaline cleaning fluids, sterile pure water, fermentation broths, oil-based emulsions, alcohol solvents
Factory Testing Items
● Raw material spectrum inspection for stainless steel components
●Surface roughness detection of all wetted parts
●Water pressure shell strength test at 1.5 times nominal pressure
●Air tightness leakage test for valve cavity and stem
●CIP high-temperature circulation aging simulation test for seals
Video
