Amtrol Parts B135-41 Diaphragm Type Expansion Tank 4.4 Gallon 1/2" MPT 30 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 B135-68 Diaphragm Expansion Tank W/444 Purger 4.4 Gallon 1/2" NPTM 100 psig,
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Amtrol Parts B135-60 Diaphragm Expansion Tank W/Fill Valve 2 Gallon 1/2" FNPT 100 psig,
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Bell & Gossett B138 F3 Brass Dual Unit Valve 1/2" NPT 30 PSI Relief 12 PSI Reducing
Reducing valves fill the system to a preset pressure for optimum performance. Combination dual unit valves include pressure reducing valve and relief valve. Both Valves are equipped with an EPDM diaphragm. The diaphragm operated relief valve operates with a low differential between opening and closing pressures. The diaphragm operated pressure reducing valve is equipped with an inlet strainer and built-in low inlet pressure check valve.

• Low inlet pressure check valve help prevent loss of system pressure if the supply water drops below system pressure
• Convenient cleanable strainer is designed to prevent dirt and sediment from entering the system
• Relief and FB-38 pressure reducing component valves

Sid Harvey Item #:B138: Replaces Part #:'s : 36861,
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Bell & Gossett B138-LF F3 Brass Dual Unit Valve 1/2" NPT 30 PSI Relief x 12 PSI Reducing

Apollo Valves FFS12 Bronze Fast Fill Water Feeder Pressure Regulator, 1/2" Solder Union x FNPT

• The Apollo model FF fast fill or feed water pressure regulator provides the heating boiler with make up water at reduced inlet pressure with a high capacity purge or quick fill capability
• ASTM grade materials for corrosion resistance and long life, cartridge is replaceable in-line
• All brass/bronze construction
• 100% factory tested and preset to 15 psi pressure
• Integral check and stainless steel strainer
• ASTM B16 brass adjustment screw, zinc plated spring steel, ASTM B584 bronze cage/body, steel and zinc plated lever, nitrile check seat/seat washer, nitrile/nylon diaphragm

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Watts Water B911 Bronze Combination Fill Valve Feeder and Backflow Preventer, 1/2" Threaded

• Pre-assembled for ease of installation
• Easy service accessibility
• High capacity fill valve for quick system filling and purging
• All bronze body construction union NPT x NPT connections
• Installed on the boiler feed line to provide make-up water to the boiler
• The valve shall contain a watts regulator model 9D backflow preventer and model 1156 feed water pressure regulator

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Beckett Parts 515-1 Firomatic Brass Fusible Burner Angle Valve 1/2 x 1/4" OD x MPT,

Greenfield 515-1/2

Beckett Parts B104CFS Firomatic Brass Fusible Burner Angle Valve 3/8 x 1/4" OD x MPT,

Beckett Parts 507-2 Firomatic Brass Fusible Inline Valve 1/2" FPTbr>

Beckett Parts 511-1 Firomatic Brass Fusible Inline Valve 1/2" OD x 1" Flare,

Beckett Parts 507 Firomatic Brass Fusible Inline Valve 1/4" FPTbr>