High Performance Spring Loaded Safety Valve
Application:
A pressure relief valve (PRV) is a safety device that relieves overpressure in a vessel or system. When the pressure of vessel or system increased beyond the specified design pressure or maximum allowable working pressure, PRV will be opened automaticly to relief the overpressure for proteding the vessel or system. The PRV will be closed if the pressure reached specified design pressure so that to ensure the normal operation and protect the vessel or system.
Our Pressure Relief Valve has been designed and manuractured according to following Standard:
. ISO 4123-1 Safety Devices for Portection Against Excessve Pressure
. API STD 526 Flanged Steel Pressure Relief Valves
. API STD 527 Seat Tightness of Pressure Relief Valves
. ASME Boiler and Pressure Vessel Code Section VIII Division 1, Rules for Construction of Pressure Vessels
Peformance:
. Type: Conventional, Bellows
. Size: 1" D 2"- 8" T 10"
. Class: 150lb~2500lb
. Temperature: -268~+538° C
. Fluid: Gas, Steam, and Liquid
. Material: Carbon steel, Stainless steel, Alloy steel
. The allowable tolerance of the set pressure: ≤ ± 3%
. Overpressure: ≤ 10%(gas)/≤ 20%(liquid)
. Blowdown: ≤ 10%(gas)/≤ 20%(liquid)
. Tightness: Conforms to API STD 527
Features:
. The solid nozzle is screwed into the body, which makes the maintenance easy.
. The shape of the disc holder has been designed to enhance the effect of the fluid thrust for an instant lift of the disc.
. Blowdown control is provided with adjustable nuzzle ring only.
. The adequate terials and clearance between disc holder and guide, spindle and adjusting screw assures disc to lift successfully.
. The surface of both the disc and the nozzle seat are deposited with Stellite. Excellent flatness and surface finish of the seating surfaces by precision machining and lapping assure pressure relief valve to have high degree of seat tightness and long using life.
. The bellows of balanced bellows pressure relief valves can not only avoid and effect of variable back pressure in the system, but also protect spring and other trim components from corrosive media.
. Materials are chosen carefully, and the manufacture of the spring and the bellows has strict technological process. Each of them is tested and checked strictly.
Company Introduction
We Beijing Zhonghanghua Safety Valve Sales Co., Ltd established by 1998 which is the sales entity especially for safety valves and specialty valve designed and manufactured by Beijijng Aerospace Propulsion Institute Pressure Relief Branch. Based on the company's philosophy of 'People oriented' and focusing on providing best-in-class service and products to customers, the company already developed as one of the most important supplier for safety valves and specialty valves. By our continuing development, our products not only has been widely used in the most of domestic industry projects but also have been accepted and installed to the industry projects by customers from USA, Germany, Canada and so on with excellent performance.
R&D, Production and Sales Base
Our parent company Beijing Aerospace Propulsion Institute (CASC) was founded by 1958, which was the first research unit in China. Since 1984, CASC started to apply aerospace techniques to the industrial products development. The products have been successful developed such as thermal engineering equipments, special pumps, special valves, petrochemical equipments, measurement and control systems, environment protection systems for petrochemical and environment protection industries. Most of them filled the domestic gap and enter the international market successfully.
Quality Management System Certification and ASME UV Stamp Certification
Beijing Zhonghanghua Safety Valve Co., Ltd. was established in 1998 and is specialized in the sale of safety valves and specialty valves designed and manufactured by Beijing Aerospace Propulsion Institute Pressure Relief Branch.
Based on our philosophy of "People Oriented and focusing on providing first-class services and products for customers", our company has already developed into one of the most important suppliers of safety valves and specialty valves. By our continuing development, our products not only have been widely used in most domestic industrial projects, but also have been accepted and installed in the industrial projects by customers from the USA, Germany, Canada and other countries and regions with excellent performance.
Our parent company Beijing Aerospace Propulsion Institute (CASC) founded in 1958, was the first research unit in China and was involved in liquid propellant rocket engine development. In 1984, CASC started to apply aerospace techniques to industrial product development. The products which have been successfully developed include thermal engineering equipment, special pumps, special valves, petrochemical equipment, measurement and control systems, and environmental protection systems for petrochemical and environmental protection industries. Most of them have filled the domestic gap and entered into the international market successfully.
Our main products include:
Safety Valves
Pilot Operated Safety Valves
Pressure Relief Valves
Change Over Safety Valves
Pressure Vacuum Valves
Gas Blanket Pressure Vacuum Valves
Emergency Pressure Vacuum Valves
Automatic Recirculation Valves
