For low pressure steam and hot water boilers larger than
5,000 sq. ft. (465m2) with hot or cold water feed
Specifications
- Float block
- Proportional feed action
- Model 53 can be field upgraded with a No. 2 switch to add low water cut-off function
- Maximum water supply pressure 150 psi (10.5 kg/cm2)
- Maximum inlet water temperature 120 Deg. F (49 Deg. C)
- Maximum vessel pressure 75 psi (5.3 kg/cm2)