Schroedahl Type SUL Pump Protection Valve
Product Features
- Automatically modulating bypass function
- Cast material, carbon steel, stainless steel
- Single-stage pressure reduction (up to 20 bar)
- Internal operation (no external energy source required)
- Easy to install
- Low maintenance
- Suitable for all liquids
Applications
- Boiler feed water
- Condensate
- Chemical processes
- Extinguishing water
Nominal Diameter: DN 25-250 / NPS 1-10
Pressure Class: PN 10-63 / Class 150-300
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Availability:
In stock
SKU
SH00100W
Product Features
- Automatically modulating bypass function
- Cast material, carbon steel, stainless steel
- Single-stage pressure reduction (up to 20 bar)
- Internal operation (no external energy source required)
- Easy to install
- Low maintenance
- Suitable for all liquids
Applications
- Boiler feed water
- Condensate
- Chemical processes
- Extinguishing water
Technical Data
| Nominal diameter | DN 25 – 250 / NPS 1 - 10 |
| Pressure class | PN 10 – 63 / Class 150 – 300 |
| Temperature (max.) | Up to 230 °C / 446 °F (other temperatures on request) |
| Housing material | 1.0619 / A216WCB 1.4408 / A351CF8M 1.4410 / A9955A 1.4501 / A9956A |
| Housing type | Cast |
| Media | Liquids of all kinds (water, oils, chemicals and others) |
| Flanges | EN 1092-1, ASME B16.5, ISO 7005, JIS, JPI |
| Designs | vertical installation, horizontal installation, drain hole, optional non-return, design for particals (with wiper) |
| Number of stages (max.) | 1 |
| Number of controlled stages (max.) | 1 |
| Operating range (max.) | Delta p up to max. 20 bar (water) |
Function
The SUL valve design is a further development of the SCHROEDAHL SU valve, an automatic recirculation valve that has been used in ships since 1960. In addition to the well-known TD series, the SUL series offers effective and cost-effective protection for pumps used in the energy, chemical and petrochemical industries.
Special Features
- Reliable operation with only a few moving parts
- Easy to install – in a vertical or horizontal position, directly on the pump outlet
- Easy to change fl ow characteristics (change of one part - item 13 - only).
- Can be used for a wide range of liquids such as water, oil, hydrocarbonates, liquid gas and many other types of chemical media.
- Temperature range -200 °C to +230 °C
