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Pressure Reducing Valve DP-23

1 Description :

DP 23 is a SG Iron pilot operated pressure reducing valve suitable for steam or compressed air.

2.Available Sizes & Pipe Connections :

  • 15,20,25,40 & 50 NB

  • Screwed : BSPT / NPT for 15,20,25NB

  • Flanged : BS10 table “F/H” for 40& 50NB

Pressure Reducing Valve 4 Dp 23
Pressure Reducing Valve 4 Dp 23

4 Pressure Sensing Pipe :

  • The DP23 controls the pressure by sensing the downstream pressure through a pressure sensing pipe taken to the union (item L) or through the internal sensing pipe (item M). Fitting of the external pressure sensing pipe is described in the User Manual supplied with the valve.

  • Note: Capacity is reduced and there is a possibility of hunting if an external pressure sensing pipe is not fitted.

5.Installation :

  • The valve should be installed in a horizontal pipeline with direction of flow as indicated by the arrow on the valve body. Full instructions are supplied in the User Manual.

Limiting Conditions

PMO - Maximum allowable Pressure 17 bar g
TMO - Maximum allowable Temperature: 232° C.
Cold hydraulic test pressure 34 bar g
Spring range 0.3 to 17 bar g

6.KV values

The Kv values are full capacities and should be used for safety valve sizing purpose only

SIZE DN15 DN20 DN25 DN40 DN50
KV 2.8 5.5 8.1 17 28

Approximate dimensions in mm DP23 STEAM

Size Screwed A Flanged A1 D E F B
15NB 160 - 451 277 174 181
20NB 160 - 451 277 174 181
25NB 180 - 501 283 218 203
40NB - 212 517 297 220 251
50NB - 232 517 297 220 251

DP23 AIR

Size Screwed A Flanged A1 D E F B
15NB 160 - 409 235 174 181
20NB 160 - 409 235 174 181
25NB 180 - 460 242 218 203
40NB - 212 475 255 220 251
50NB - 232 475 255 220 251
Pressure Reducing Valve 3 Dp 23
Pressure Reducing Valve 4 Dp 23
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