LESER Product Overview
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valves for details
valves for details
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Modulate Action
Flanged safety valves with a standard or proportional opening characteristic. They minimize medium loss when opening and are used for thermal relief applications, liqud service and protection from pressure peaks.
Advantages
- Minimal medium loss when opening
- Outstanding value for the price
- Simple and robust construction
- Proven thousands of times
- Single trim (identical internal parts for steam/gas/liquid) allows economical maintenance
- Quick delivery (2-4 weeks from the factory or next day from local warehouse)
- Equippable with bursting discs
Technical Specifications
| Nominal Diameter at Inlet | DN 15 - DN 150 | 1/2" - 6" |
| Actual Orifice Diameter d0 | 12 mm - 92 mm | 0,47 in - 3,62 in |
| Actual Orifice Area A0 | 113 mm² - 6648 mm² | 0,175 in² - 10,3 in² |
| Pressure | 0,2 bar - 160 bar | 2,9 psig - 2320,6 psig |
| Temperature (iaw DIN EN) | -270 °C to 450 °C | -454 °F to 842 °F |
| Body Material | 0.6025, 0.7043, 1.0619, 1.4408 |
| Valve Connection | Flange in accordance with DIN EN 1092 or ASME B16.5 |
| Bellows Material(optional) | Stainless steel |
| Load Type | Spring |
Approvals
Industries
- Chemical Industry
- Petrochemical Industry
- Technical Gases
- Pharmaceutical Industry
- Heating and Air Conditioning
Valve Types
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Type 431 / 433
Medium capacities with a large proportional opening range
DN 15 - DN 150 (1/2" - 6") -
Type 431 / 433 PN 160
High proportional opening area and hign pressure
DN 15 - (1/2" - ) -
Type 427 / 429
with linear opening and closing characteristics proportional to pressure
DN 15 - DN 150 (1/2" - 6")
