Series FV-4 Automatic Vent Valves are used in commercial and residential hydronic heating applications to provide automatic air venting for hot or cold water distribution systems. It consists of a brass body construction with male NPT connection, brass cover, air vent with silicone rubber seal, polyethylene float with valve plug, and automatic vent. Series FV-4M1 has a high temperature rating and is ideal for use with glycol systems or for use as an anti-vacuum device. It can also be installed to permit the separation and dispersal of air while fluid is circulating in the system. Can be disassembled for inspection and cleaning.
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Watts Water FV-4M1

Tjernlund D-3 Aluminized Steel Housing Inline Draft Inducer, 115 VAC, 0.96 amp, 1550 RPM, 1/20 HP

• Venturi action starts air moving up the stack instantly and keeps it moving smoothly
• In-line inducers are built for long-lasting, trouble-free service
• Vari-draft control permits adjustment to individual job requirements
• Vents/chimneys utilizing in-line draft inducers must be vertically terminated above the roof line
• Solves venting problems: Undersized chimneys, negative pressures, long horizontal vent connectors, down drafts, cold equipment starts, restrictive heat exchangers/combustion chambers
• 1 year warranty Tjernlund D-3 Aluminized Steel Housing Inline Draft Inducer, 115 VAC, 0.96 amp, 1550 RPM, 1/20 HPSid Harvey Item #:106-1: Replaces Part #:'s : x89-444,
  
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  Tjernlund 106-1

Field Controls (GVD) gas vent damper was developed to reduce off cycle venting losses through boilers and draft hoods. When the boiler is in a standby mode, heat escapes up the chimney. The heat comes from the boiler and the conditioned space. To significantly reduce these losses, install a Field Controls Gas Vent Damper. The damper is installed in the vent as close to the draft hood as practical. When properly installed, the damper opens before the burner fires, and closes after the burner shuts off. The electrical circuits in this product are designed not to override the existing limit and safety controls of the boiler.

• Operates with all 24 VAC , 60 Hz intermittent ignition and standing pilot ignition systems
• Stainless steel construction provides superior corrosion resistance
• Damper operation - power opens in 15 sec, power closes in 15 sec, power is off at damper motor when it is at rest
• Hold open switch allows damper to be placed in an open position and taken out of service to assist with trouble shooting appliance problems
• Keyed wiring harness connector plug installs only one way, preventing incorrect wiring connection
• Flex seal provides self cleaning action

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Field Controls GVD-4PL

Field Controls (GVD) gas vent damper was developed to reduce off cycle venting losses through boilers and draft hoods. When the boiler is in a standby mode, heat escapes up the chimney. The heat comes from the boiler and the conditioned space. To significantly reduce these losses, install a Field Controls Gas Vent Damper. The damper is installed in the vent as close to the draft hood as practical. When properly installed, the damper opens before the burner fires, and closes after the burner shuts off. The electrical circuits in this product are designed not to override the existing limit and safety controls of the boiler.

• Operates with all 24 VAC , 60 Hz intermittent ignition and standing pilot ignition systems
• Stainless steel construction provides superior corrosion resistance
• Damper operation - power opens in 15 sec, power closes in 15 sec, power is off at damper motor when it is at rest
• Hold open switch allows damper to be placed in an open position and taken out of service to assist with trouble shooting appliance problems
• Keyed wiring harness connector plug installs only one way, preventing incorrect wiring connection
• Flex seal provides self cleaning action

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Field Controls GVD-5PL

Field Controls (GVD) gas vent damper was developed to reduce off cycle venting losses through boilers and draft hoods. When the boiler is in a standby mode, heat escapes up the chimney. The heat comes from the boiler and the conditioned space. To significantly reduce these losses, install a Field Controls Gas Vent Damper. The damper is installed in the vent as close to the draft hood as practical. When properly installed, the damper opens before the burner fires, and closes after the burner shuts off. The electrical circuits in this product are designed not to override the existing limit and safety controls of the boiler.

• Operates with all 24 VAC , 60 Hz intermittent ignition and standing pilot ignition systems
• Stainless steel construction provides superior corrosion resistance
• Damper operation - power opens in 15 sec, power closes in 15 sec, power is off at damper motor when it is at rest
• Hold open switch allows damper to be placed in an open position and taken out of service to assist with trouble shooting appliance problems
• Keyed wiring harness connector plug installs only one way, preventing incorrect wiring connection
• Flex seal provides self cleaning action

Sid Harvey Item #:GVD-6PL: Replaces Part #:'s : 40703,
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Field Controls GVD-6PL

Field Controls (GVD) gas vent damper was developed to reduce off cycle venting losses through boilers and draft hoods. When the boiler is in a standby mode, heat escapes up the chimney. The heat comes from the boiler and the conditioned space. To significantly reduce these losses, install a Field Controls Gas Vent Damper. The damper is installed in the vent as close to the draft hood as practical. When properly installed, the damper opens before the burner fires, and closes after the burner shuts off. The electrical circuits in this product are designed not to override the existing limit and safety controls of the boiler.

• Operates with all 24 VAC , 60 Hz intermittent ignition and standing pilot ignition systems
• Stainless steel construction provides superior corrosion resistance
• Damper operation - power opens in 15 sec, power closes in 15 sec, power is off at damper motor when it is at rest
• Hold open switch allows damper to be placed in an open position and taken out of service to assist with trouble shooting appliance problems
• Keyed wiring harness connector plug installs only one way, preventing incorrect wiring connection
• Flex seal provides self cleaning action
  

Field Controls (GVD) gas vent damper was developed to reduce off cycle venting losses through boilers and draft hoods. When the boiler is in a standby mode, heat escapes up the chimney. The heat comes from the boiler and the conditioned space. To significantly reduce these losses, install a Field Controls Gas Vent Damper. The damper is installed in the vent as close to the draft hood as practical. When properly installed, the damper opens before the burner fires, and closes after the burner shuts off. The electrical circuits in this product are designed not to override the existing limit and safety controls of the boiler.

• Operates with all 24 VAC , 60 Hz intermittent ignition and standing pilot ignition systems
• Stainless steel construction provides superior corrosion resistance
• Damper operation - power opens in 15 sec, power closes in 15 sec, power is off at damper motor when it is at rest
• Hold open switch allows damper to be placed in an open position and taken out of service to assist with trouble shooting appliance problems
• Keyed wiring harness connector plug installs only one way, preventing incorrect wiring connection
• Flex seal provides self cleaning action
  

Caleffi Minical 502015A Automatic Air Vent, 1/8", MPT, 150 psi, 250 deg F, Brass

• Enhance system performance and life expectancy
• The caleffi high capacity automatic air vent 1/8" NPT male is designed to remove trapped air that accumulates in heating and air conditioning systems automatically
• Air removal enhances performance and life of a system by reducing the effects of corrosion due to oxygen, pockets of air trapped in the heating emitters and cavitation in the circulation pumps
• Straight body style
• Polypropylene float, brass valve stem, stainless steel vent wire lever and spring and EPDM O-rings
• water and glycol solution medium
• Automatic air vents are designed to remove trapped air that accumulates in heating and air conditioning systems automatically
• cavitation in the circulation pumps
• corrosion due to the oxygen
• Pockets of air trapped in the heating emitters
• 40 psi venting discharge pressure
• 1-3/4 scfm discharge rate

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Caleffi 502015A

Field Controls OVD-6 Automatic Oil Vent Damper 6" Round

OVD-6

Watts Regulators series 40L, 40xL automatic reseating temperature and pressure relief valves are used in commercial water heater applications to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters. They feature a bronze body with NPT male inlet and NPT female outlet connections, unique thermostat with special thermo-bonded coating, tamper-resistant bonnet screws, automatic reseating feature, and test lever. Model 40L has a short thermostat for installation directly in available tank tapings. Model 40xL has an extension thermostat for installation in the hot water outlet within the allowable distance from the top of the tank. Series 40L, 40xL valves are ASME rated and CSA listed.

• The combined 2-in-1 temperature and pressure relief valve provides the least expensive and proven means for protection against both excessive temperature and pressure emergency conditions
• Fully automatic temperature and pressure relief protection for domestic hot water supply tanks and heaters
• Includes test lever and extension thermostat for installation in hot water outlet within the allowable distance from the top of the tank
• Non-mechanical seat-to-disc alignment
• Thermostat is accurate and proven and exclusively designed and manufactured by watts
• Tamper-resistant bonnet screws

Sid Harvey Item #:40xL-1-150: Replaces Part #:'s : 24592,
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40XL-1-150

Watts Regulaot series 40L, 40xL automatic reseating temperature and pressure relief valves are used in commercial water heater applications to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters. They feature a bronze body with NPT male inlet and NPT female outlet connections, unique thermostat with special thermo-bonded coating, tamper-resistant bonnet screws, automatic reseating feature, and test lever. Model 40L has a short thermostat for installation directly in available tank tapings. Model 40xL has an extension thermostat for installation in the hot water outlet within the allowable distance from the top of the tank. Series 40L, 40xL valves are ASME rated and CSA listed.

• The combined 2-in-1 temperature and pressure relief valve provides the least expensive and proven means for protection against both excessive temperature and pressure emergency conditions
• Fully automatic temperature and pressure relief protection for domestic hot water supply tanks and heaters
• Includes test lever and extension thermostat for installation in hot water outlet within the allowable distance from the top of the tank
• Non-mechanical seat-to-disc alignment
• Thermostat is accurate and proven and exclusively designed and manufactured by Watts
• Tamper-resistant bonnet screws

Sid Harvey Item #:B147-103: Replaces Part #:'s : 24590,

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Watts Water B147-103

The number 7 series Auto-Vents are reliable, automatic air eliminating valves for concealed radiators, pipe lines, tanks and other devices where water or liquids are used for heating and cooling. They have proven to be the solution to problems that have confronted engineers and contractors in which air pockets or traps retard the free circulation of the liquids and reduce the efficiency of the system or appliance. The numer 7 series Auto-Vents air eliminators are made of brass and equipped with a self-closing, float-operated valve. The valve is equipped with a monel metal spring and a neoprene valve seat which is unaffected by high temperatures, oil and anti-freeze. No air chamber is required. The vent is regularly fitted with a patented cap that may be used as a check in case of a leak caused by core sand or scale.

• Combination connection
• They vent air continuously and help your system work at peak efficiency

Sid Harvey Item #:B156-89: Replaces Part #:'s : L37-315,

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Maid-O-Mist B156-89