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YOSHITAKE AF-1 Safety and Relief Valve

Made in Japan
Manufacturer: Yoshitake
Model: AF-1

  • High capacity with full bore design
  • Reliable performance because of precise machining and heat treatment on trim parts

Specifications

Features For steam, full bore, screwed, lever
Type Safety valve
Specifications Product type Full bore type safety valve
Nominal size 20A (3/4″) – 50A (2″)
Application Steam
End connection Inlet: JIS R screwed, Outlet: JIS Rp screwed
Working pressure 0.18 – 1.6 MPa
Max. temperature 220 degree(C)
Material Body Ductile cast iron
Spring case Ductile cast iron
Valve and valve seat Stainless steel

Remarks

* Rp is parallel screw applicable to taper pipe thread.


Dimensions and Weights

Size (Inlet x Throat x Outlet) L (mm) H1 (mm) Weight (kg)
20A(R1 x 15 x Rp1) 47 67 3
25A(R1-1/4 x 19 x Rp1-1/4) 50 79 4.2
32A(R1-1/2 x 26 x Rp1-1/2) 62 92 7.2
40A(R2 x 30 x Rp2) 70 108 10.5
50A(R2-1/2 x 38 x Rp2-1/2) 89 123 18.5

*The nominal size and the connection size are different.

About flow rate
Capacity table

Dimensional drawing

Dimensional drawing

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