Shanghai Huanyao Valve Co., Ltd.

Double pipe breathing valve Double pipe fire retardant breathing valve principle Double pipe fire retardant breathing valve wholesale
Introduction to double pipe breathing valve
Double pipe fire retardant breathing valve is also known as two-way fire retardant breathing valve Double mouth fire retardant breathing valve It is an improved and updated product based on the ordinary all-weather breathing valve. It has the dual functions of flame arrester and breathing valve. It adopts a double-mouth structure and has the characteristics of large ventilation volume, small leakage volume and corrosion resistance. It is an ideal safety device on fixed roof storage tanks.
》Technical performance of double pipe breathing valve
<= d%>
%> Main body material
%> ()
Nominal diameter/nominal pressure
D(/-)-.(-)
Positive and negative pressure valve disc material

Fire retardant layer material
Hastelloy Monel alloy
Explosion-proof level
:
Nuts and bolts
#
Sealing gasket
Nitrile rubber gasket PTFE gasket Metal gasket Graphite gasket
Sealing surface< br/> Raised surface (r) Flat concave and convex surface, tongue and groove surface
Connection standard
D
Connection form
Flange connection, internal thread connection, external thread connection
Design and manufacture Testing standards
-
Working temperature
Carbon steel: -℃~+℃ Stainless steel: -℃~+℃
Appearance
Carbon steel: Anti-corrosion paint Stainless steel: Pickling Treatment or anti-corrosion paint
Since its establishment, Shanghai Huanyao Valve Co., Ltd. has mainly sold various flow meters, liquid level meters, flow valves, safety valves, solenoid valves, regulating valves, gate valves, and ball valves that meet the standards of /, and other standards. , needle valves, stop valves, check valves, butterfly valves, flame arresters, exhaust valves, filters, traps and other marine accessories set meter valves. According to various user requirements, according to national standards, American standards, Japanese standards, German standards Mark D and other domestic and foreign standards are customized. Its products all meet the testing standards of relevant municipal, provincial and national departments.
Huanyao Valve adheres to the purpose of sourcing quality, integrity and creating value. Its products are now selling well all over the country and have gradually developed overseas markets. And win the trust of customers with excellent product performance, reasonable price positioning and high-quality customer service.
Huanyao Valve believes that perfection begins with the pursuit of excellence! We have a strong technical team and constantly recruit high-end technical talents from the field of valves. All products adopt 3D computer-aided design to achieve technological innovation and develop products that meet the market to seize market opportunities. Forge ahead, work hard, pioneer, persist in working hard, continue to improve, and just want to do better. The company implements advanced Six Sigma management methods and establishes a strict quality management system to continuously pursue zero defects. The strong production capacity allows Huanyao Valve to provide users with the products they need in the shortest possible time and provide timely and efficient after-sales service to maximize user satisfaction.
Shanghai Huanyao Valve Co., Ltd. adheres to the business philosophy of honesty, quality first, and reasonable price, and adheres to the principle of customer first to provide quality services to our customers. We sincerely welcome friends from all walks of life to come and discuss business!