157S-A HIGH PRESSURE LEVEL CONTROL - ALTERNATE TAPPINGS

McDonnell & MillerSKU: 173702

Price:
Sale price$1,685.71

Description

Low Water Cut-Offs – Mechanical
For Steam Boilers

Series 157S
Low Water Cut-Off/Pump Controllers
• For residential, commercial and industrial low or high pressure boiler applications
• For boilers of any steaming capacity
• Monel bellows provides corrosion resistance
• Float chamber with integral water column provided
•`Snap action for high temperature service
– 1 Single pole, single throw switch for pump control
– 1 Single pole, double throw switch for low water cut-off and alarm actuation
• Optional features
– Manual reset
– Integral conductance probes for additional levels and greater operating differential-Model 157S-RBP-MD
– 1" or 11⁄4" NPT equalizing tappings
– 1⁄2" or 3⁄4" NPT tappings for gauge glass/tri-cock installations
– BSPT threads
• Maximum pressure 150 psi (10.5 kg/cm2)

Model 157S-MD
Maximum differential operation
– Prevents nuisance burner shutdowns in low pressure applications operating less than 50 psi (3.5 kg/cm2)

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