Overview of Primary Product

Part Number 550-141-186/0914
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Right end section tappings
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(continued)
No petroleum-
based chemicals
4. Check for maintained gauge pressure and leaks. Repair if found.
5. Drain boiler and remove plugs from tappings used for controls and accessories.
Do not use petroleum-based cleaning or sealing compounds in boiler system.
Severe damage to boiler will result, causing substantial property damage.
Repair leaks
at once
Leaks must be repaired at once. Failure to do so can damage boiler, resulting
in substantial property damage.
Tapping Size
Inches
Steam Boilers Water Boilers
(note 4)
C2 1
1
/ 4 Boiler drain Boiler drain
D3 & D4
1
/ 2 Gauge glass
(note 3)
--
E3 & E4 1 Low water cutoff
(note 3)
Optional low water
cutoff
E3 1 Pressure
operating & limit
controls and
pressure gauge
Limit control
(note 2)
F2 1 -- To expansion tank or
automatic air vent
(note 2)
G2
3
/ 4 -- Operating control
(note 2)
H3 & H4
(note 1)
3
/ 8 Tri-cock --
J2 2 Steam relief valve
& skim tapping
Water relief valve &
skim tapping
K2
1
/ 2 -- Combination pressure
& temperature gauge
(note 2)
M3 & M4 1 Optional low water
cutoff
(note 3)
Optional low water
cutoff
M3 1 Firing rate control
(when used)
Firing rate control
(when used) or Probe
low water cutoff
Notes:
1. Available on special request only.
2. Must be on same side as supply to system.
3. Must be on same side as steam equalizer piping.
4. Additional controls for water boilers may be placed in supply piping.