| LSS | MSS | |
| Models | 30-LSS 100-LSS 150-LSS 250-LSS 400-LSS |
250-MSS 450-MSS |
| Maximum Capacity | 51,000 lb/hr (23,113 kg/hr) | 280000 lb/hr (127000 kg/hr) |
| Maximum Allowable Pressure | 450 psig (31 barg) | 450 psig (31 barg) |
| Maximum Allowable Temperature | 650°F (343°C) | 650°F (343°C) |
| Body Material | ASTM A351 CF8M Stainless Steel |
ASTM A351 CF8M Stainless Steel |
| Maximum Operating Pressure | 450 psig (31 barg) | 450 psig (31 barg) |
| Connection Type | Screwed, Socketweld, Flanged |
Screwed, Socketweld, Flanged |
| Connection Size | 2″ (50 mm) 2-1/2″” (65 mm) 3″ (80 mm) |
2″ (50 mm) 2-1/2″” (65 mm) 3″ (80 mm) |
| Flow Direction | Horizontal | Horizontal |
The simple, yet rugged, cast steel construction of the LSS Series Ultra-Capacity F&T steam traps offer long, trouble-free service. All floats, valves and seats, and lever mechanisms are constructed of stainless steel.
The integral thermostatic air vent is a balanced-pressure phosphor-bronze bellows caged in stainless steel. It is designed especially for demanding industrial applications where highly efficient, uninterrupted service is essential. This balanced-pressure type of air vent will respond to the pressure-temperature curve of steam at any pressure from zero to 250 psig (17 bar). Thus-up to 250 psig (17 bar)-air is vented at slightly below steam temperature.
