■
E
ＰＤＴ－１６８
a
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4. Structure
Figure 2 Structure
No. Name of parts
1
Body
14
Nut
2
Valve seat
15
Spring
3
Drain plug (R3/8)
16
Spindle
4
Seat ring
17
Spring chamber
7
Valve
19
Lever (on Model AF-7)
10
Valve holder
26
Name plate
11
Guide
29
Seal
Page 1: ...essure vessel structure specifications Boiler structure specifications 4 6 2 For Air Pressure vessel structure specifications 4 7 I n s t al la t i on 7 1 Example of piping 5 7 2 Warnings and cautions...
Page 2: ...ange JIS B 2238 Size mm 25 40 50 65 80 100 Body Carbon steel casting Material Valve valve seat Stainless steel 1 A safety valve which is so constructed that a part of the fluid blown off from the valv...
Page 3: ...mm AF 7 AF 7M Weight kg 25 25 32 16 200 9 4 0 100 85 226 231 10 40 40 50 25 490 6 6 3 120 110 273 270 20 50 50 65 32 803 8 8 0 135 120 325 321 25 65 65 80 40 1256 0 10 0 160 125 366 361 40 80 80 100 5...
Page 4: ...re 2 Structure No Name of parts No Name of parts 1 Body 14 Nut 2 Valve seat 15 Spring 3 Drain plug R3 8 16 Spindle 4 Seat ring 17 Spring chamber 7 Valve 19 Lever on Model AF 7 10 Valve holder 26 Name...
Page 5: ...ssure from the fluid coming in from the back of the valve holder back pressure adds to the pressure for the valve to close 6 Size selection tables 6 1 For steam Saturation temperature Pressure vessel...
Page 6: ...stalled improperly 4 Please make sure that the product is installed in the proper direction The product will not function if installed in an improper direction 5 Securely support and fasten the piping...
Page 7: ...f the safety valve does not affect the safety valve Installation of the flange on the safety valve inlet 1 As the valve seat is screwed on to the flange inlet there is a difference in level on the fla...
Page 8: ...be used on devices and equipment that vibrate considerably Leakage at the outlet side There is back pressure on the piping at the outlet side Review and change the piping layout Specifications of the...
