©Johnstone Supply eCatalog 216

HYDRONICS Boiler Controls

Replacement Blow-Down Valve • Replacement boiler control blow-down valve for McDonnell & Miller series 47 ( L86-137 ), 67 ( L37-423 ) and 70 low water cut-offs • Maximum pressure: 30 PSI

• Gasket and mounting screws included WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Order #

Mfg. # 14-B

L38-713

Low Water Cut-Off For Steam Boilers • For low pressure steam boilers of any size • Float-actuated electrical switch used to protect boilers against the hazard of a low water condition • Quick hook-up fitting for installation in gauge glass tappings • Has large area self-closing blow-off valve • Adjustable conduit outlet

• 1/4" NPT pressure control tapping • Maximum steam pressure: 20 PSI

• Electrical ratings: 120VAC — maximum FLA 7.4; maximum LRA 44.4; 240VAC — maximum FLA 3.7; maximum LRA 22.2 • Pilot duty: 120/240VAC, 125VA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Order #

Mfg. #

Model #

L37-423

149400

67

Replacement Head Mechanism For Low Water Cut-Offs • Replacement head mechanism for series 67 ( L37-423 ), 69 ( L38-768 , L38-769 ), 70 and 767 low water cut-offs

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Order #

Mfg. #

Model #

L38-773

153825

6667

Low Water Cut-Offs For Steam Boilers Electric • For residential and commercial low pressure steam boilers • Mounts in 2-1/2" NPT boiler side tappings • Packless bellows • Adjustable BX outlet for easy installation

• Dual precision switches for operation of the low water cut-off and an alarm or an electric water feeder Specifications: • Maximum steam pressure: 20 PSI WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Order #

Mfg. #

Model #

Insertion Length

Volts

L38-768 L38-769

155300 155500

369 469

1-3/4"

120 120

1-3/16"

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