Series 53 is Obsolete
The 51 series is a functional replacement for piping purposes but operates at a lower pressure. It is a drop in retrofit with the only difference being the Max PSI is 35. The Max PSI for the 53 was 75 PSI.
Mechanical Water Feeder For low pressure steam and hot water boilers larger than 5,000 sq. ft. with hot or cold water feed. Optional features - No. 2 switch, manual reset, float block Proportional feed action.
Part # | Model # | Description | Price | Qty | ||
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134900 | 51-HD | McDonnell Miller 51-HD Replacement Head | $1,593.14 | Add to Cart | |
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135100 | 51-2-HD | McDonnell Miller 53-2-HD Replacement Head | $1,852.84 | Add to Cart |
Part # | Model # | Description | Price | Qty | ||
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134700 | 51 | McDonnell Miller 51 Mechanical water feeder | $1,799.41 | Add to Cart | |
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135000 | 51-2 | McDonnell Miller 51-2 w/ No. 2 switch | $2,044.12 | Add to Cart | |
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135200 | 51-2-M | McDonnell Miller 51-2M w/ manual reset | $2,173.58 | Add to Cart |