©Johnstone Supply eCatalog 216

HYDRONICS Boiler Controls

Gaskets Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Order #

Mfg. # Description

Pkg. Qty.

For Use With

L50-828 L50-829 L50-830 L50-831 L50-832 L50-833 L46-252 L50-834 L50-835 L46-254 L50-836 L50-837 L50-838 L50-839 L50-840 L50-841 L46-263

323400 Head Gasket (92-68) 324500 Ring Seal (37-101) 304200 Head Gasket (F-26) 314100 Valve Gasket (37-28)

10

94 Series

5

New Type Misc. Valve & Strainer Assemblies (47, 51, 53, 101A, 551-S, 847, 851)

10

25A, 51, 51-S, 53, 221, 551-S, 3155 Products: 21 & 25, Series: 3155, 515, 53

5

313300 Gasket (37-39)

10 10

Blow-Off Valve 14B, 47, 67, 70B

325700 Flat Flange Gasket (150-14)

150 Series 69 Series

318826 Head Gasket

1 5 1 5 5 5

313900 Valve Bracket Gasket (37-27) 318900 Bellows Flange Gasket (67-12) 310800 Valve Body Gasket (21-12) 303600 Bellows Base Gasket (CO-11) 325600 Raised Flange Gasket (150-14H) 25 10

47, 51, 51-S, 53, 247, 551-S, 847, 851, 851-S, 3155

61, 64, 67, 69, 70, 70B, 767

21 Series

63

150 & 93 Series 21, 847, 851, 851-S

336500 Head Gasket (847-26)

312200 Valve Bracket Gasket (21-27)

21, 25A, 27W

313800 Body Gasket (37-26) 302700 Head Gasket (CO-12) 318827 Bellows Base Gasket

10 25

47, 247

42, 61, 63, 64, 65

1

69 Series

Combination Low Water Cut-Off/Mechanical Water Feeder For Low Pressure Steam and Hot Water Boilers • For systems larger than 5,000 sq. ft. capacity with cold water feed • Includes No. 2 cut-off switch ( L38-774 ) Specifications: • Maximum water supply pressure: 150 PSI • Maximum pressure: 35 PSI

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

Order #

Mfg. #

Model #

Volts

L86-351

135000

51-2

120/240

CycleGard Low Water Cut-Offs For Steam Boilers • Mounts directly to boiler and monitors water level in low pressure steam boilers • Allows boiler to operate continuously as long as water remains in contact with probe • 15-second delay feature prevents burner from short cycling during temporary low water levels

• Control delays 30 seconds before restarting when water level is restored, allowing optional water feeder to raise water to normal operating level • Recommended for boilers with tankless coils WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Order #

Mfg. #

Model #

Volts

Order #

Mfg. #

Model #

Volts

L42-936

L42-937

45-410-2090 CG400-2090

24

45-460-1560 CG450-1560

120

539

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