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Spring Loaded Safety Valve - Stainless Steel

Valves



Spring Loaded Safety Valve - Stainless Steel
Specifications

  Size: DN 20 x 32 ~ DN 150 X 250
s   Pressure: PN16~ PN 40
s   Material: Cast steel, SS, etc.

Safety valve instruction

Safety valve, the best extra-pressure protection device takes care of press equipments, container and on-line pipe. When mediums pressure rises over the allowed pressure, safety valve will automatically open and fully discharge to protect the equipment from pressure going on rising and will automatically close when the pressure lowers to the setting pressure.

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The valve bonnet of sealed safety valve prevents dust and foreign matters from invading. Meanwhile protect toxic combustible media from overflowing. The valve bonnet of open safety valve can favour the spring seat in lowering temperature inside of. It is mainly used for the pipeline and container with steam medium. The safety valve with a radiator is suitable for the medium with a temperature over 350 °c.

The safety valve with lever, it makes use of open manually when the media pressure over 75% of setting pressure.

Full lift safety valve opening height is more than one fourth times of the flow diameter. it has an advantage of discharging greatly. Low lift safety valve valve opening height is between one twentieth to one fortieth times of the flow diameter.

Structural of Safety Valve

  Closed spring loaded low lift
  Closed spring loaded full lift
  Open spring loaded full lift with a lever.
  Open spring loaded low lift with a lever.
  Fully lift with radiator.
  Twin spring loaded low lift.

Connection Type

  Internal Thread (NPT Screw, BS Screw)
  External Thread (NPT Screw, BS Screw)
  Flange. ( RF,RTJ )
  Welding.

High temperature flange spring loaded safety pressure relief valve
Performance

  The allowable tolerance of the set pressure: <+/-3% of the set pressure
  Overpressure :< 10% of the set pressure
  Blow down :<15% of the set pressure
  Tightness: the valves have good seat tightness, conforms to API527

Features

  The solid nozzle screws into the body. its maintenance is 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
  Blow down control is provided with adjustable nozzle ring only
  The adequate materials and clearance between disc holder and guide, spindle and adjusting screw assures disc to lift successfully.
  The surface of both the disc and the nozle seat is depsited with STL. Excellent flatness and surface finish of the seating surfaces by precision machining and lapping assure safety valve to have high degree of seal tightness and long usage
  The bllows of balanced bellows safety valve not only can avoid and effect of variable back pressure in the system, but also can protect spring and other trim components from corrosive media
  The choice of material is careful. The manufacture of the spring and the bellows has strict technological process. Each of them is tesed and checked strictly.

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Specifications

  Safety Valves/pressure safety valves, angle type
  Full lift safety valve
  Standard safety valve for boiler, open bonnet,
  metal to metal seated, with plain type lifting device
  Inlet: Flanged connection acc. to ANSI B16.5
  Utlet: Flanged connection acc. to ANSI B16.5

High Temperature and high pressure safety relief valve Applications

  Provided as safety device for protection against excessive pressure in pressure vessels.
  Approved for gases, vapours and fluids
  working temperatures: Lower than 300°C

HIGH PRESSURE SAFETY RELIEF VALVE MAIN PROPERTY SPECIFICATION
Normal Pressure PN 150 300 600
Body strength Ps(Mpa) 3.0 7.5 15
Set pressure Pk(Mpa) 0.1-2 1.6-5 3.2-10
Seal pressure Pm(Mpa) 90%Pk
Reseation pressure Ph(Mpa) ≥90%Pk
Relieving Pressure Pp(Mpa) ≤1.03Pk
Lift height H(mm) ≥1/4 d0
Appropriate temp. ≤450℃
Appropriate Medium Steam
CODE OF THROAT DIAMETER
Code Diameter Code Diameter
D 10 L 50
E 13 M 55
F 16 N 60
G 20.5 P 72
H 26 Q 96
J 33 R 115
K 40 T 148
CODE OF THROAT DIAMETER
No Name of part Materials A48Y-C Materials A48Y-P Materials A48Y-P
1 Body WCB 304 316
2 Nozzle 2Cr13/ 304 304 316
3 Adjusting Ring 2Cr13/ 304 304 316
4 Disc 2Cr13/ 304 304 316
5 Guide sleeve 2Cr13/ 304 304 316
6 Bonnet ZG230-450 ZG230-450 ZG230-450
7 Spring 50CrVA 50CrVA coated teflon 50CrVA coated teflon
8 Stem 2Cr13 304 316
9 Adjusting bolt 45 2Cr13 2Cr13
10 Cap ZG200-400 ZG200-400 ZG200-400
Large Size Safety Valve
Description

  Standard or Nonstandard: Standard
  Structure: Safety
  Pressure: Medium Pressure
  Power: actuated
  Material: WCB
  Temperature of Media: Medium Temperature
  Media: steam
  Port Size: 24 inch
  Application: General
  set pressure class: 10-13
  PN nominal pressure for safety valve: 16.0

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Safety valve instruction

  Safety valve, the best extra-pressure protection device takes care of press equipments, container and on-line pipe. When mediums pressure rises over the allowed pressure, safety valve will automatically open and fully discharge to protect the equipment from pressure going on rising and will automatically close when the pressure lowers to the setting pressure.
  The valve bonnet of sealed safety valve prevents dust and foreign matters from invading. Meanwhile protect toxic combustible media from overflowing. The valve bonnet of open safety valve can favour the spring seat in lowering temperature inside of. It is mainly used for the pipeline and container with steam medium. The safety valve with a radiator is suitable for the medium with a temperature over 350 °c.
  The safety valve with lever, it makes use of open manually when the media pressure over 75% of setting pressure.
  Full lift safety valve opening height is more than one fourth times of the flow diameter. it has an advantage of discharging greatly . Low lift safety valve valve opening height is between one twentieth to one fortieth times of the flow diameter.