Watts Regulators series 174A boiler pressure relief valves are used in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment. It consists of a bronze body construction with NPT threaded female inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 174A resists corrosive water conditions, sticking and freezing, and prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief and shall not be used as an operating control.

• Safety relief valves for pressure protection only of all types of hot water heating boiler equipment
• Seat located above drain, water can't be trapped and sediment can't foul seat
• Non-mechanical seat-to-disc alignment will not stick or freeze
• Water seal of high temperature resisting material isolates spring working parts from water during relief

Sid Harvey Item #:B145-2: Replaces Part #:'s : 24572
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Watts Water B145

Dole 90-1 Air/Steam Straight Valve, 1/2 x 3/4", MIP x FIP

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Dole B152-1

Gorton Heating Corp Vertical Straight #1 Air Vent Valve, 3/4 x 1/2",,
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Gorton Heating B153

Dole B49-3 Flow Valve 4.0 GPM 1/2 FPT
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B49-3

B49-3

Watts BBFP Forged Brass Dual Check Backflow Preventer with Intermediate Atmospheric Vent, 1/2", Union Thread

• Dual check valves with intermediate atmospheric vent prevent the reverse flow of hot or cold polluted water from entering into the potable water supply
• It consists of a brass body with stainless steel internal parts, integral strainer, and two durable, tight-sealing, rubber check valves
• Designed for continuous pressure, non-health hazard applications in smaller supply lines

Sid Harvey Item #:B146-70A: Replaces Part #:'s : 2K558,
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Watts Water B146-70

Coleman Manufacturing CAL12750 Insulation Cement 45 lb.Bag

Coleman Manufacturing 645

Field Controls CAS-2B Combustion Air System for Beckett AFG/AF, Carlin EZ-1, CRD FRD, Wayne MSR Oil Burners, Upto 2 GPH

Sid Harvey Item #:CAS-2B: Replaces Part #:'s : x89-861,
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Field Controls CAS-1

Field Controls CAS-4JR Fan-In-a-Can Gas System 24 VAC,
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Field Controls CAS-34U

Field Controls CAS-6 Fan-In-a-Can Gas System 120 VAC 2600 RPM,
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Field Controls CAS-4JR

Field Controls CAS-1 Combustion Air System for Beckett AFFI, Nx, Riello 40BF Oil Burners, Upto 2 GPH

Sid Harvey Item #:CAS-1: Replaces Part #:'s : 5G3200,
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Field Controls 100-4

Watts Water B911P Back Flow Preventer 1/2" Pro-Press

Watts Water B911P