Bell & Gossett Airtol ATF-12 Cast Iron Tank Fitting, 1/2", FNPT x FNPT Airtrol tank fittings help establish the proper initial liquid level in the compression tank when filling the hydronic system. They help maintain proper system pressurization by directing released air to the compression tank during system operation and permit cooler liquid flow to the boiler during the off cycle as system liquid cools. Airtrol tank fittings must be used with the appropriately sized in-line airtrol or rolairtrol air separator.

• Copper and copper plated tubes
• Brass vent tube fittings Airtrol tank fittings help establish the proper initial liquid level in the compression tank when filling the hydronic system. They help maintain proper system pressurization by directing released air to the compression tank during system operation and permit cooler liquid flow to the boiler during the off cycle as system liquid cools. Airtrol tank fittings must be used with the appropriately sized in-line airtrol or rolairtrol air separator.Sid Harvey Item #:ATF12: Replaces Part #:'s : 3651,
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  Bell & Gossett ATF12

Valve and Strainer Kit Domestic

• Model SA47-101-102

Sid Harvey Item #:B123-1: Replaces Part #:'s : L38-786,
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McDonnell & Miller B123-1

Mcdonnell & Miller 150S Low Water Cut-Off, 120/240 VAC, 150 psi, Automatic Reset

• Monel bellows provides corrosion resistance
• Cut-off and alarm actuation
• With pump controller

Sid Harvey Item #:B109: Replaces Part #:'s : 3W240,
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McDonnell & Miller B109

Safgard 400 Galvanized Housing Glazed Probe Insulator Non-Cycling Steam Primary Low Water Cut-Off 24 VAC 15 psi Automatic Reset

• Low maintenance - no moving parts to wear or hang up, as in float devices
• Advanced solid state design - high quality, economical boiler protection
• Delayed burner shutdown - 15 sec off-time delay in low water condition prevents burner short cycling due to surging and priming
• Probe plus 30 - 30 sec on-time delay allows solenoid valves and automatic feeders to bring feed water past the probe to a safe operating level
• Automatic reset - automatically restarts the boiler after 30 sec on-time delay when water reaches the probe
• Low water indicating light
• Direct boiler mounting - eliminates blowdowns
• SPDT switch contacts
• NEMA 1 control housing

Sid Harvey Item #:B103-39: Replaces Part #:'s : 9916,
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Hydrolevel B103-39

Amtrol Parts B135-42 Diaphragm Type Expansion Tank 7.6 Gallon 1/2" MPT 60 Lbs

• Accepts expanded water as system temperature rises to reduce pressure build-up
• Helps reduce energy consumption and reduces system wear
• Suitable in propylene glycol applications with mixtures up to 50%
• Heavy-duty butyl/EPDM diaphragm
• Steel system connection
• Projection welded air valve
• Made in USA,
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  Amtrol Parts B135-42

Amtrol Parts B135-43 Diaphragm Type Expansion Tank 14 Gallon 1/2" MPT 90 Lbs

• Accepts expanded water as system temperature rises to reduce pressure build-up
• Helps reduce energy consumption and reduces system wear
• Suitable in propylene glycol applications with mixtures up to 50%
• Heavy-duty butyl/EPDM diaphragm
• Steel system connection
• Projection welded air valve
• Made in USA,
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  Amtrol Parts B135-43

Amtrol Parts B135-48 Diaphragm Expansion Tank,
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Amtrol Parts B135-48

63 Mechanical Low Water Cut-Off with Manual Reset 125 VA 5.1 FLA/30.6 LRA at 240 VAC 50 psi

• Heavy-duty
• Use with TC-4 on hot water systems
• For commercial, industrial and residential applications
• 10.2 amp full load and 61.2 amp locked rotor at 120 VAC
• No 2 switch
• With manual reset

Sid Harvey Item #:B109-6: Replaces Part #:'s : 13602,
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McDonnell & Miller B109-6

Xylem B109-5 Float Type Low Water Cut-Off 120/ 240 VAC 50 PSI Automatic,

Xylem B109-5

Amtrol Parts B135-69A Automatic Fill Valve FL-109 Fill-Trol Expansion Tanks,
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Amtrol Parts B135-69A

Float and Bellows Assembly for Use With 61 67 69 and 767 Series Low Water Cut-Offs

Sid Harvey Item #:B122-4: Replaces Part #:'s : 3W014,
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McDonnell & Miller B122-4

Watts Regulators series 1450F dual controls regulator and relief Valve are for use in commercial and residential hydronic heating systems to fill the boiler and piping system with water, and to maintain water pressure in the system at all times. It also provides make-up water to the system in the event of system leaks. It consists of an iron and bronze body construction with NPT threaded inlet and outlet connections, an attached iron body, diaphragm relief valve, a tight seating check valve, purge lever for manual purging, and a stainless steel strainer. Series 1450F has high capacity performance and simplified servicing design. It is suitable for use in the boiler feed lines of hydronic heating systems.

• Combination fill valve and safety pressure relief valve
• Tight seating check valve
• Purge lever for manual purging
• High capacity
• Stainless steel strainer to protect the valve disc from fouling
• 15 psi set and 30 psi relief valve setting

Sid Harvey Item #:B144-1A: Replaces Part #:'s : B138-1 | B138-1R | B143-12,
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Watts Water B144-1A