Bell & Gossett B138-LF F3 Brass Dual Unit Valve 1/2" NPT 30 PSI Relief x 12 PSI Reducing

Bell & Gossett B138-LF

Honeywell V8043B1027 Zone Valve 2-Way Normally Open24 VAC Straight 3/4" OD

Honeywell PV150 The Resideo SuperVent, purges air through a no clog vent assembly, to control dirt and debris and minimize air vent fouling in Hydronic heating systems, while eliminating the need for bleeding.

No clog vent
• Dirt and debris resistant
• 360 deg adjustable collar ring for installation flexibility
• Stainless steel concentrator which eliminates gurgling noise
• Bronze body for rigid construction
  
  

  PV150

All field vent hoods are made of heavy gauge aluminum and can be used with natural gas, LP gas or oil-fired equipment. There are five diameters ranging from 3 to 8 Inch. The concentric pipe, angled outlet deflectors, and spaced plate design allow for better heat dissipation. This type of construction minimizes the effects of heat on the outside wall. The angled hood design reduces the effects of wind on the venting system. The inner and outer pipe are a continuous structure. This allows for easy installation to power venter or vent pipe and also eliminates possible positive pressure leaks in the wall section.

• Can be used in conjunction with PVG and PVO power venters or with forced draft systems
• 7-5/8 x 7-5/8 shield for 0 clearance to combustible
• Designed for standard vent pipe and Class B type double-wall (B-Vent) connection
• Provides proper clearance between flue gas stream and wall combustible

Watts AS-MB-100 Microbubble Air Separator, 1", IPS, 150 psig, 240 deg F, 15 GPM, Forged Brass, 3-12/16" L x 6-15/16" H

Features a durable brass body construction, corrosion-resistant polyphenylsulfone coverall Lengthescing media that withstands petroleum based cleaners, glycol anti-freeze
• Requires no minimum inlet/outlet piping length for proper operation
• DuoVent air vent assembly has a high-capacity and high-temperature rating
• Fully serviceable - can be disassembled for inspection and cleaning
• Bottom tapping for use with series RBFF residential boiler fill fitting
  
  

  Watts Water AS-MB100

Watts Water BD911S Bronze Combination Fill Valve Feeder and Backflow Preventer, 1/2" NPT

Pre-assembled for ease of installation
• Push button fast fill with auto-stop to prevent system over-pressurization
• Dial indicator eliminates need for pressure gauge
• High capacity fill valve for quick system filling and purging
• All bronze body construction union solder x NPT connections
• Dial indicator plus or minus 2 psi
• Series BD911 combination fill valve and backflow preventer consists of a model 9D backflow preventer and model BD1156F feed water pressure regulator in one pre-assembled unit
• Combination bronze dial set fill valve
  
  

  BD911S

Watts Regulators series 740 boiler pressure relief valves are used in hot water space heating boiler applications to protect against excessive pressure on all types of hot water space heating boiler equipment. It consists of a iron body construction with expanded outlet drain connections for hot water space heating boilers, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 740 offers large discharge capacity, resists corrosive water conditions, resists 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.

Iron body with expanded outlets for hot water space heating boilers
• 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
• Each hot water space heating boiler shall be equipped with a pressure relief valve set to relieve below the maximum boiler working pressure
• Water seal of high temperature resisting material isolates spring working parts from water during relief
  
  

  B145-6

Taco air scoop's special design and internal baffles of Taco air scoops slow water velocity to separate the air from solution. Thanks to this design, Taco air scoops efficiently remove air to provide noiseless, air-free hydronic heating, cooling or combination systems. They also provide an economic way to integrate air elimination by the connection of either a plain steel or diaphragm expansion tank.

1-piece cast iron construction
• Never requires any servicing
• Engineered baffle separates air from water
• Each air scoop has a vent connection on top for the installation of a 1/8" Taco 400-3 or 416-1 Hy-Vent and 1/2" bottom tapping for a diaphragm expansion tank
• The 1-1/2 - 4" air scoops also have an additional top tapping for the connection of a plain steel expansion tank
• Water or water/glycol media
  
  

  Taco B153-14

Taco boiler feed valves automatically feed water to a system whenever pressure in the system drops below the pressure setting of the valve. The dual control models combine the boiler feed with an in-line pressure relief valve. The built-in check prevents emptying the system if incoming pressure falls. They feature fast fill rates and an exclusive, lockable fast fill lever. Taco boiler feed valves have set the standards for dependable service. Each valve is adjustable from 10 - 25 psi, has a built-in check to prevent the emptying of the system if incoming pressure fails, and the easy to use fast fill lever is lockable.

Fast fill rate on all models
• Exclusive fast fill lever lock
• Built-in check to prevent emptying the system if incoming pressure fails
• Pressure setting adjustment separated from fast fill lever for easy, fast adjustment
• 100 psi maximum supply side pressure, 12 psi factory setting of system side
  
  

  Taco B143-13

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
  
  

  Bell & Gossett B138

Amtrol Parts 443 Cast Iron In-Line Air Purger, 1", 125 psig 4" W x 6" H

Separates air from water in closed loop hydronic heating system
• System connection sets the point of no pressure change
• 1-year warranty
• 1/8" NPT top tapping, 1/2" bottom tapping

Amtrol Parts B135-80

Bell & Gossett B138-12A Lead Free Brass Low Pressure Valve 1/2" Union FPT x Sweat 10-25 PSI
Reducing valves protect heating and plumbing systems against excessive line pressures. They are factory set at specified limits although adjustment is easily made. Equipped with built-in-strainer and low inlet pressure check valve.

Fast fill feature reduces start-up time and labor
• 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
• Flexible system connection
• Brass body construction is highly resistant to corrosion - ideal for water systems
• Protect heating and plumbing systems against excessive line pressures
• Equipped with built-in-strainer and low inlet pressure check valve
• Includes tailpiece
• Construction: diaphragm EPT with special insert, EPDM check valve and insert, brass valve plate, strainer and strainer nut wetted parts, steel non-wetted parts
• 12 psig factory set pressure, 125 psig maximum working pressure
  
  

  Bell & Gossett B138-12A