Active Member
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[China]
Address: No.1675, Fengxiang Road, Baoshan City Industrial Zone, Baoshan District, Shanghai, China
Contact name:Olivia
Kata Valve (Group) Co., Ltd. |
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Forged Steel Material Spring Type Low lift safety valve for Water with Flanged Connection DN50 PN25
The primary function of a safety valve is to protect property and
life.
Because a safety valve is often the last device to prevent
catastrophic failure under pressure conditions, it is important
that the valve works at all times i.e. it must be 100% reliable.
Safety valves should be installed wherever the maximum allowable
working pressure of a system or pressure containing vessel is
likely to be exceeded, in particular under fault conditions due to
the failure of another piece of equipment in the system.
Pressure excess can be generated in a number of different ways
including:
The term “Safety Valve” and “Relief Valve” are generic terms to describe a variety of pressure relief devices. A wide range is available based on the application and required performance criteria. The different designs are required to meet numerous national standards.
Please note depending upon the manufacturer they may differ slightly to that shown below.
Pressure relief valve – (This is a general term, which includes safety valves, relief
valves and safety relief valves.)
A spring-loaded pressure relief valve which is designed to open to
relieve excess pressure and to reclose and prevent the further flow
of fluid after normal conditions have been restored. It is
characterised by a rapid-opening 'pop' action or by opening in a
manner generally proportional to the increase in pressure over the
opening pressure. It may be used for either compressible or
incompressible fluids, depending on design, adjustment, or
application.
Safety valve - A pressure relief valve actuated by inlet static pressure and
characterised by rapid opening or pop action.
Relief valve - A pressure relief device actuated by inlet static pressure
having a gradual lift generally proportional to the increase in
pressure over opening pressure.
Safety relief valve - A pressure relief valve characterised by rapid opening or pop
action, or by opening in proportion to the increase in pressure
over the opening pressure, depending on the application, and which
may be used either for liquid or compressible fluid.
Safety valve - A valve which automatically, without the assistance of any energy other than that of the fluid concerned, discharges a quantity of the fluid so as to prevent a predetermined safe pressure being exceeded, and which is designed to re-close and prevent further flow of fluid after normal pressure conditions of service have been restored.
This diagram represents a Safety valve in its very simplest form. The force acting on the inlet side of the disk is acting against the force applied by the spring plus the force applied by the back pressure on the top of the disk.
Quality assurance system
1.Sclerometer
2.Universeal material testing machine
3.High speed analyzer
4.Chemical test
5.Electric analysis scales
6.Nde mt (magnetic powder) inspection
NDE UT (ultasonic) inspection
NDE PT (penetrate) inspecion
PMI spectrum analysis
Hydraulic pressure test
Cryogenic ball valve test
Fire-safe test
Certification
Our major products
Exporting is the dominant operation at Kaitai.In the process of KATA brand promotion and building up our distribution channels over the years and now has many satisfied and loyal customers.KATA is well recognized and its products are widely used in the oil and gas industry,power plant,boiler,metallurgy,pressure vessel,water supply and drainage and etc.
