Safety valves

Features: ASME UD certified, and capacities are certified by the National Board Boiler and Pressure Vessel Inspector. Mainly used in ground flare, offshore platform. 
Blasting needle is not affected by the pipe pressure cycle changes, no need for a check on a regular basis. 
Blasting needle relief valve can ensure 95% tight seal under the condition of pressure close to set pressure. Dimensions: 1"~78"
 Pressure range: 150lb~900lb Temperature range: -196℃~+538℃


Features: 
High cost caused by unscheduled shutdown can be avoided, since crossover can be done without shutdown the process. Pressure loss is small, guarantees the combined pressure relief valve has designed discharge coefficient. 
A vent valve is installed at the bottom of each pressure relief valve to discharge medium before dismantling the pressure relief valve. At high pressure class(≥600lb), balance valve will be setup in the quick crossover combination, to make change

Features:
 Surface of the main parts of the relief valve is covered by fluoroplastics, which can protect the trim components from strong corrosive medium.
 Used on the strong corrosive conditions, such as saturated brine, wet chlorine, caustic soda, and strong acid. Dimensions: 1"D2"~8"T10" Pressure range: 150lb~300lb Temperature range: -60℃~+200℃

Features:
 Composed of relief valve, pneumatic actuator and control device. 
 Pneumatic device ensures that the relief valve be accurately opened and closed, at the same time, provides auxiliary sealing force.
 The system can operate near set pressure without leakage. Redundant design ensures the relief valve can normally opened when the control device is failed.
 Remote operate system can force disc open and reseat.
 Meet the explosion-proof requirement.
 Dimensions:1"×2"~12

Features:
 Specially designed for the tubular loop reactor.
 Soft seal makes the valve have perfect sealing performance, even when it works under the condition with particle. 
Using multi-layer bellow, valve can normally run when the back pressure change is large.
 Bellow and protective sleeve ensure the valve have great perfor-
 Dimensions: 1.5"x2"~8"×10" Pressure range: 300lb~600lb Temperature range: -40℃~+235℃

Features:
 ASME UV certified, and capacities are certified by the National Board Boiler and Pressure Vessel Inspector.
 The system can be operated near set pressure without valve leakage. The soft seat design provides good seat tightness before and each relief cycle.
 Proper valve operation and lift are unaffected by back pressure. No more overpressure required for full lift of main valve. Dimensions: 1"D2"~20"BB24" Pressure range: 150lb~4500lb Temperature range: -196℃~+538℃

Features: ASME UV certified, and capacities are certified by the National Board Boiler and Pressure Vessel Inspector. 
Provides high quality overpressure protection for the plants that need the heat preservation, such as the equipment of polyester, ethylene, and urea. 
All body including inlet and outlet flanges is preserved. The steam flushing function can be added.
 Balanced bellows protect the set pressure from being affected by variable back pressure, and protect the

Features: ASME UV certified, and capacities are certified by the National Board Boiler and Pressure Vessel Inspector. 
Widely used on the pressure pipes and vessels of the chemical and petrochemical plants and systems, and provide high quality overpressure protection.
 Special design makes the disc to achieve full opening at small overpressure.
 Blowdown can be controlled by the blowdown adjustment ring. Dimensions: 1"D2"~20"BB 24" Pressure range: 150lb~2500lb Temperature

Features: ASME UV certified, and capacities are certified by the National Board Boiler and Pressure Vessel Inspector. Applies to the safety protection all kinds of pressure-bearing devices in petro-chemical, chemical industries where thermal expansion relief of tanks and pipelines are needed. For metal sealing, the sealing surfaces are deposited with Stellite. Excellent flatness and surface finish of sealing surfaces by precision machining and lapping assures seat tightness

Features: Provides high quality over pressure protection for industrial steam system. Low overpressure & high blowdown, the operation of valve is agile and stable. The Flexible Thermal Disc improves seat tightness in high pressure situation. Nozzle is welded with body, to make connecting stable when it is serviced in the condition of high temperature and high pressure. Dimensions: 1.5"F 2"~8"T 10" Pressure range: 300lb~4500lb Temperature range: ~+650℃