Taco SR503-4 switching relay is the best choice for all your zoning needs, with advanced powerport cards, external diagnostic lights, switchable priority and contractor friendly PC board layouts. Combined with the time proven reliability of the 00 family of circulators and thermostats, total system integrating is achieved. External indicator lights provide instant diagnostic feedback, making a snap of service calls or new installation start-ups.

• External indicator lights
• Switchable priority
• Priority protection
• Simplified wiring
• Sealed relays
• Fuse protected outputs
• Compact design
• 100% factory tested
• Isolated end switch
• Contractor friendly PC board layout
• Universal thermostat compatibility
• All circulator relay connections, including ZC/ZR, are rated 1/3 HP (6 amp full load, 36 amp locked rotor) at 120 VAC
• End switch connections are rated 24 VAC, 1 amp
• All thermostat connections supply a 24 VAC class 2 output

Sid Harvey Item #:SR503: Replaces Part #:'s : ERSR301

Taco SR503

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

Sid Harvey Item #:B143-13: Replaces Part #:'s : B138-12A | B143-13R | B144-5

Taco B143-13

Taco 0015-MSF2-IFC 3-Speed In-Line Circulator Pump, 1/20 HP, 115 VAC , 3250 RPM , 0 - 18 gpm

• Fine tune to system requirements
• Highest performance & starting torque in class
• Heavy duty construction for longer life
• 4-bolt universal flange
• Removable high-flow Integral Flow Check (IFC®)
• Prevents gravity flow
• Reduces installation costs
• Improves pump performance
• Replaceable cartridge design
• Quiet, efficient operation
• Self-lubricating, no mechanical seal
• Acetal plunger body
• EPDM o-ring seal
• Stainless steel spring, steel stator housing
• Ceramic shaft and carbon bearings

taco 0015-msf2-ifc

Taco SR024-001RP Replacement Switching Relay, 24 volt

Taco SR504-4 switching relay is the best choice for all your zoning needs, with advanced powerport cards, external diagnostic lights, switchable priority and contractor friendly PC board layouts. Combined with the time proven reliability of the 00 family of circulators and thermostats, total system integrating is achieved. External indicator lights provide instant diagnostic feedback, making a snap of service calls or new installation start-ups.

• External indicator lights
• Switchable priority
• Priority protection
• Simplified wiring
• Sealed relays
• Fuse protected outputs
• Compact design
• 100% factory tested
• Isolated end switch
• Contractor friendly PC board layout
• Universal thermostat compatibility
• All circulator relay connections, including ZC/ZR, are rated 1/3 HP (6 amp full load, 36 amp locked rotor) at 120 VAC
• End switch connections are rated 24 VAC, 1 amp
• All thermostat connections supply a 24 VAC class 2 output

Sid Harvey Item #:SR504: Replaces Part #:'s : SIDSSR504

Taco SR504

Taco 007-042RP Replacement Cartridge Assembly for 007-2, 007-F1A and 007-F3-1W Cast Iron Circulator Pump

Sid Harvey Item #:B53-16A: Replaces Part #:'s : B53-16A

Taco 006 Circulator Pump, 1/40 HP, 115 VAC , 11 gpm

• Standard high capacity output and compact design
• Quiet, efficient operation
• Direct drive, low power consumption
• Unique replaceable cartridge design-field serviceable
• Self lubricating, no mechanical seal
• Unmatched reliability, maintenance free
• Unique replaceable cartridge contains all of the moving parts and allows for easy service instead of replacing the entire circulator
• Compact, low power consumption design is ideal for high efficiency jobs
• With integral flow check and without flanges
• For indoor use only

Sid Harvey Item #:B53-14: Replaces Part #:'s : 39191

taco b53-14

Taco SR502-4 switching relay is the best choice for all your zoning needs, with advanced powerport cards, external diagnostic lights, switchable priority and contractor friendly PC board layouts. Combined with the time proven reliability of the 00 family of circulators and thermostats, total system integrating is achieved. External indicator lights provide instant diagnostic feedback, making a snap of service calls or new installation start-ups.

• External indicator lights
• Switchable priority
• Priority protection
• Simplified wiring
• Sealed relays
• Fuse protected outputs
• Compact design
• 100% factory tested
• Isolated end switch
• Contractor friendly PC board layout
• Universal thermostat compatibility
• All circulator relay connections, including ZC/ZR, are rated 1/3 HP (6 amp full load, 36 amp locked rotor) at 120 VAC
• End switch connections are rated 24 VAC, 1 amp
• All thermostat connections supply a 24 VAC class 2 output

Taco SR502-4

Taco Motor & Bracket 1/2 HP 1725 RPM 115/230 VAC

The Taco Zone Sentry Zone Valve enhances the overall performance of any zone valve system. The unique patented technology in the Zone Sentry utilizes a microcircuit based logic to control a gear driven electronic actuator which drives a ball valve based body design. All this adds up to a zone valve that leads the industry in energy efficiency, flow capacity (Cv), shutoff pressure rating, ease of installation, diagnostic capability and the number of valves that can be use on a standard 40VA transformer.

• The ball valve installs in any orientation
• Multi-function LED
• Quick connect wiring
• Manual override
• (90 deg turn) approximately 5 sec ball rotation speed
• 1 amp at 24 VAC end switch rating
• 0.5 amp heat anticipator setting
• Brass press ring and brass (chrome-plated)
• High performance engineered polymer body, high performance internally lubricated engineered polymer gears actuator
• 2-pin screw connectors for power and end switch

Taco 007E-2F4 Cast Iron High-Efficiency ECM Circulator Pump, 16 gpm, 120 volt, 4830 RPM Taco 007e is a high-efficiency wet rotor circulator with an ECM permanent magnet motor. The 007e is everything you love about the 007. It is ideal for hydronic systems zoned with circulators or zone valves. The 007e delivers the performance equivalent of the 007 plus the reliability and easy installation that made the 00 famous. Install it, forget it.

• ECM performance equivalent to the legendary 007 circulator
• High-efficiency ECM motor uses up to 85% less electricity
• BIO Barrier protects pump from system contaminants
• SureStart automatically frees locked rotor condition and self-purges air from pump
• Integral flow check (IFC) included
• Dual electrical knockouts, 6" stranded wire leads included for easy wiring
• Use with a Taco ZVC zone valve control or SR switching relay for on/off operation
• Double insulated, no ground wire required
• Whisper quiet operation
• Equipped with a cast iron casing and should be used for closed loop systems only
• Circulator pumps are for indoor use only
• Acceptable for use with water or maximum of 50% water/glycol solution
• Composite stator housing, cartridge and impeller
• Ceramic shaft, ceramic thrust bearing
• EPDM O-ring and gaskets
• Carbon bearing Taco 007e is a high-efficiency wet rotor circulator with an ECM permanent magnet motor. The 007e is everything you love about the 007. It is ideal for hydronic systems zoned with circulators or zone valves. The 007e delivers the performance equivalent of the 007 plus the reliability and easy installation that made the 00 famous. Install it, forget it.

  taco 007e-f4

The high velocity series 0010-IFC includes an Integral Flow Check, saving installation costs while improving system performance. The removable, spring-loaded IFC® replaces a separate in-line flow check and prevents gravity flow when the circulator is not operating. Available in cast iron or stainless steel construction.

• Includes Integral Flow Check (IFC)
• Prevents gravity flow
• Eliminates separate in-line flow check
• Reduces installed costs, easy to service
• Improved performance vs standard in-line flow check
• Unique replaceable cartridge design - field serviceable
• Unmatched reliability, maintenance free
• Quiet, efficient operation
• Direct drive - low power consumption
• Self-lubricating, no mechanical seal
• Standard high capacity output, compact design
• Acetal body plunger
• Aluminum stator housing, stainless steel cartridge, ceramic shaft, carbon bearing, EPDM o-ring and gaskets

Sid Harvey Item #:B53-27: Replaces Part #:'s : 5W305

taco b53-27