Product classification
 Pressure gauge ball valve for ammonia
Pressure gauge ball valve for ammonia
 Explosion proof electric ball valve
Explosion proof electric ball valve
 300LB ammonia stop valve
300LB ammonia stop valve
 Stainless steel butt welding ammonia stop valve
Stainless steel butt welding ammonia stop valve
 Pneumatic explosion-proof emergency shut-off valve
Pneumatic explosion-proof emergency shut-off valve
 Fire protection special fuse valve
Fire protection special fuse valve
 Liquid ammonia crane pipe pull off valve
Liquid ammonia crane pipe pull off valve
 Ammonia shut-off valve
Ammonia shut-off valve
 ZSHOY-25K Pneumatic Shut off Valve
ZSHOY-25K Pneumatic Shut off Valve
 Needle valve for ammonia
Needle valve for ammonia
 Ammonia bellows stop valve
Ammonia bellows stop valve
 Natural gas emergency shut-off valve
Natural gas emergency shut-off valve
 Cut off valve
Cut off valve
 Hard seal butterfly valve
Hard seal butterfly valve
 Ammonia stop valve
Ammonia stop valve
 German DIN ammonia ball valve
German DIN ammonia ball valve
 Self sealing liquid ammonia stop valve
Self sealing liquid ammonia stop valve
 P11H-16P Automatic exhaust valve
P11H-16P Automatic exhaust valve

Contact Yonglong

Consulting hotline 021-57566219
  • Mobile: 15900658318
  • Fax: 021-57568296
  • Email: 1257073858@qq.com
  • Address: Nanting Highway, Fengxian District, Shanghai
  • 2788
 Fire retardant breathable cap

Fire retardant breathable cap

  • Valve model: SCZ50-A
  • Diameter specification: DN15 ~ DN50
  • Structure: straight through
  • Valve body material: aluminum alloy, carbon steel, stainless steel
  • Nominal pressure: PN0.6MPa, PN1.6MPa
  • Applicable temperature:+300 ℃
  • Application range: oil, gas, combustible gas/liquid
  • Product features: anti knock, anti-static
Click Inquiry 021-57566219
product details

The shell of SCZ50-A fire retardant vent cap is aluminum alloy. The fire retardant core is rolled with stainless steel corrugated plate, and the cap is 304 stainless steel, which meets the technical requirements of SY/T0512-1996. When the oil tank material expands or enters the oil tank, it exhausts outward through the corrugated plate of the fire retardant core. When the oil tank discharges oil inward and outward, it inspires air into the tank, preventing and eliminating all fire sources from passing through the tank to ensure the safety of the oil tank.

 SCZ50-A Flame Retardant Breathable Cap

Technical parameters of SCZ50-A flame retardant vent cap
Nominal diameter DN50mm
Connection mode Flange, internal thread
body material aluminium alloy
Fire retardant core stainless steel
Block a Shot stainless steel
Nominal pressure PN6
Applicable media Oils
Service temperature 200℃
application area Gas filling station, tank emptying pipe
purpose Inhalation, exhaust and fire resistance
Manufacturer Shanghai Yonglong Valve Factory

  Repair and maintenance of flame retardant vent cap:

Check the air permeability of the flame retardant corrugated plate in the vent cap frequently to ensure good flame retardant and air permeability of the vent cap. During maintenance, unscrew the upper cover screw of the vent cap, loosen the screw fixing the flame retardant core, take out the flame retardant core, check whether the flame retardant core is blocked, deformed or rusted, clean or replace the flame retardant core immediately, and check twice a month.
Shanghai Yonglong Valve Factory has long been committed to the development and production of valves supporting mechanical equipment such as petroleum, chemical, storage and transportation, mixing, filtering, and transportation. The company has a series of complete inspection equipment such as physical and chemical tests, performance analysis, X-ray nondestructive testing, and metallographic analysis. Our products have rich experience in the field of fluid automatic control and environmental protection. Electric cut-off valves, pneumatic cut-off valves, electric ball valves, pneumatic ball valves, ammonia cut-off valves, emergency cut-off valves are used in many industries: petroleum, chemical, natural gas, refrigeration, smelting, gas filling stations, sewage treatment, storage terminals, etc.


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