Description
The SDP143 is a cast steel pilot operated pressure surplussing valve suitable for steam, air and industrial gasses (Note: It is not suitable for oxygen service).
The SDP143 controls by sensing the upstream pressure through a pressure sensing pipe taken from the union 29 which is clearly identified on page 5.
Standards
This product fully complies with the requirements of the EU Pressure Equipment Directive 2014/68/EU and carries the mark
when so required.
Certification
This product is available with certification to EN 10204 3.1.
Note: All certification/inspection requirements must be stated at the time of order placement.
Sizes and pipe connections
DN15LC – Low Capacity version, DN15, DN20, DN25, DN32, DN40, DN50 and DN80.
Flanged to EN 1092 PN40, BS 10 Table ‘J’, ANSI 300 and ANSI 150.
Kv values
The Kv maximum values shown below are full capacities and should be used for safety valve sizing purposes only.
DN15LC | DN15 | DN20 | DN25 | DN32 | DN40 | DN50 | DN80 |
1.0 | 2.8 | 5.5 | 8.1 | 12.0 | 17.0 | 28.0 | 64.0 |
For conversion:
Cv (UK) = Kv x 0.963
Cv (US) = Kv x 1.156
Materials
No. | Part | Material | ||
1 | Adjustment screw | Steel | BS 3692 Gr. 8.8 | |
2 | Adjustment lock-nut | Steel | BS 3692 Gr. 8 | |
3 | ‘C’ washer | Stainless steel | BS 1449 304 S16 | |
4 | Spring housing | Cast steel | DIN 17245 GS C25 | |
5 | Top spring plate | Steel | BS 970 220 Mo7 | |
6 | Pressure adjustment spring | Stainless steel | BS 2056302 S25 | |
7 | Bottom spring plate | Steel | BS 970 220 Mo7 | |
8 | Spring housing | Securing nuts | Steel | BS 3692 Gr. 8 |
Securing studs | Steel | BS 4439 Gr. 8.8 | ||
DN15 to DN80 | M10 x 30 mm | |||
9 | Pilot diaphragm | Stainless steel | BS 1449 316 S31 | |
10 | Pilot valve housing | Steel | DIN 17245 GS C25 GP 240 GH + N |
|
11 | Pilot valve plunger | Stainless steel | BS 970 431 S29 | |
12 | Spring housing cover | Stainless steel | BS 1449 304 S12 |
SDP143
SDP143 Pilot Operated Pressure Surplussing Valve with Cast Steel Body
PHONE: 0812-3340-4116WHATSAPP: 0812-3340-4116
Spirax Sarco – steam product solution
- SDP143 Operated Pressure Surplussing Valve with Cast Steel Body
- DP27, DP27E, DP27G, DP27GY, DP27R & DP27Y
- BRV71 and BRV73 SG Iron Pressure Reducing Valves
- SRV2S Stainless Steel Pressure Reducing Valve
- SV60 Safety Valve Spirax Sarco