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Quick Details

  • Standard or Nonstandard: Standard
  • Structure: Safety
  • Pressure: Medium Pressure
  • Power: actuated
  • Material: WCB
  • Temperature of Media: Medium Temperature
  • Media: steam
  • Port Size: 20
  • Place of Origin: Zhejiang, China (Mainland)
  • Model Number: A48Y-150
  • Brand Name: TANA
  • Application: General
  • set pressure class: 10-13
  • PN normianl pressure for safety valve: 16.0

Packaging & Delivery

Packaging Details plywood case
Delivery Time we will deliver them in 30 days after payment

API 526 boiler Spring loaded full lift steam safety pressure relief valve with lever type 


The allowable tolerance of the set pressure: <+/-3% of the set pressure

Overpressure:<10% of the set pressure

Blowdown:<15% of the set pressure

Tightness: the valves have good seat tightness, conforms to API527


1)The solid nozzle screws into the body. its maintenance is easy

2)The shape of the disc holder has been designed to enhance the effect of the fluid thrust for an instant lift of the disc

3)Blowdown control is provided with adjustable nozzle ring only

4)The adequate materials and clearance between disc holder and guide, spindle and adjusting screw assures disc to lift successfully.

5)The surface of both the disc and the nozle seat is depsited with STL. Excellent flatnes 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

6)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

7) 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.



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
  • Outlet: Flanged connection acc. to ANSI B16.5


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

  1. Standards Compliance
  2. Design and Manufacture: API RP 520
  3. Face to Face(end to end): API 526
  4. Test and Inspection: API 527

Materials for main parts

NOName of partMaterials A48Y-CMaterials A48Y-PMaterials A48Y-R
2Nozzle2Cr13/ 304304316
3Adjusting Ring2Cr13/ 304304316
4Disc2Cr13/ 304304316
5Guide sleeve2Cr13/ 304304316
7Spring50CrVA50CrVA coated teflon50CrVA coated teflon
9Adjusting bolt452Cr132Cr13
Sealing surface of material "Y" depositing stellite


Note: If youre interest, please email us request for detail technical datas and dimensions. 

TANA will provide you satisfying Price, Quality And Service. 

Welcome to visit or email us your inquiry. 

Provide CO,FA,FB,FE,FF,FN,FP,FX etc. Certificates as per customers requirement.

Product showroom

Quality control

Example projects

contact with us

 We provide you with sincerely service.if you are interested in our valves,contact us NOW!
Phone:+86 1890638592
Whatsapp:+86 1890638592

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