SPIRAX Marshall Pressure Reducing Valve Model: DP143:

Limiting Conditions: Maximum Working Condition 26 kg / cm2 at 300 Deg C. Body design Conditions: 42 kg / cm2 at 427 Deg C.

Cold Hydraulic test pressure without internals: 52 kg/cm2

Three colour coded pressure adjustment springs are available for the following downstream pressure ranges:

• Yellow :02 to 3 bar
• Blue :2.5 to 7 bar
• Red :6.0 to 17.3 bar
• Grey :16.0 to 24.4 bar
• Sizes: NB 15,20, 25,40, 50 and 80.
• Std. Accessories: Pr. Gauge, syphon & Gauge cock
• Pipe Connections :Flanged to -BS10 table - 'J'  & 'K' ANSI - 300' * & '600' DIN - ND - '25' &  '40'

Note - 80 NB has these flanges only.

How to order ?

• 20 NB SPIRAX MARSHALL DP -143 FOR STEAM FLANGED TO BS 10 TABLE 'K' IBR  (OR NIBR).
• 40 NB SPIRAX MARSHALL DP 143 FOR AIR Flanged TO ANSI 300 NIBR. Pressure Reducing Valve DP 143