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Item#:
66460
Manufacturer Item:
004935F
Manufacturer:
MEILNER MECH/BOILERSOURCE
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120/240 VAC, 48 A, 10 to 150 PSI, Screw Terminal, SPDT, Diaphragm, Subtractive Differential, Auto Recycle, Snap Action, Break On Pressure Rise, Pressure Controller

Provide Operating Control with Automatic Limit Protection for Pressure Systems up to 300 PSI

Models have Snap-Acting Switching to Open or Close a Circuit on Pressure Rise

Have Adjustable Differentials

Ground Screw Terminal

Item#:
70552
Manufacturer Item:
L404F1102/U
Manufacturer:
HONEYWELL BUILDING/INTERNATION
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Slab/Floor, Sensor with 15' Lead for AQ2000/AQ1000 Aquatrol Hydronic Zone Panel

15 Foot Lead Length is Used to Control Floor Temperatures of In-Floor Radiant Heating Application

Item#:
73836
Manufacturer Item:
AQ12C20/U
Manufacturer:
RESIDEO-ADEMCO
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2.8" x 1" x 4.6", 24 VDC, Premier White, Non-Programmable, Communicating, Thermostat

Two-wire polarity-insensitive non-programmable network communicating thermostat

User buttons feature liquid crystal display as well as outdoor, indoor and floor temperature displays

Floor temperature sensing with minimum and maximum limits (when used with optional AQ12C20 Slab/Floor Sensor (sold separately))

Selectable temporary and permanent backlight

Item#:
73837
Manufacturer Item:
AQ1000TN2/U
Manufacturer:
RESIDEO-ADEMCO
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1/4" FPT, 0.25 to 12 VDC 0.25 A, 0.5 to 9 PSI Operating/1 to 5 PSI Differential, SPST, Diaphragm, Additive Differential, Pressuretrol Controller

The PA404A is a Pressure Actuated High Limit, Safety Control for Steam Heating Boilers

It Breaks an Electrical Circuit to Shut Down the Burner if Steam Pressure Rises Above a Safe Level

The PA404B is Used with Suspension-Type Unit Heaters to Make the Fan Circuit When a Pressure Rise Indicates the Presence of Steam

Each Model Contains an SPST Micro Switch Snap Acting Switch

Sensitive Pressure-Actuated Diaphragm Expands or Contracts with Pressure Variations, Moving a Lever Mechanism Which Operates the Snap Switch

A Screw on Top of the Case Allows Set Point Adjustment without Removing the Cover

Differential is Adjusted by Means of a Dial Located Inside the Case

Item#:
71201
Manufacturer Item:
PA404A1033/U
Manufacturer:
RESIDEO-ADEMCO
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10 Kilo Ohm, 10' Cable, NTC Thermistor, Floor Sensor for Dual Sensing Dial/Digital Thermostat
Item#:
89644
Manufacturer Item:
236497-001
Manufacturer:
REHAU CONSTRUCTION LLC
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4-Zone, Zone Control Module (1 per Pack)
Item#:
89641
Manufacturer Item:
243047-001
Manufacturer:
REHAU CONSTRUCTION LLC
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Actuator Control Wiring Junction Box with 40 VA Transformer for 4 Manifold (1 per Pack)

Simplify the wiring process

Easy to follow PC board and secure screw terminal layout eliminates problems caused by incorrect wiring

External indicator lights confirm operation sequence and diagnostic feedback

The unit includes two built-in 40 Volt Amp transformers, Extra fuses provided

Item#:
89640
Manufacturer Item:
298276-001
Manufacturer:
REHAU CONSTRUCTION LLC
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24 VAC, Digital, Dual Sensing, 3-Wire, Programmable, Thermostat

This 3-Wire Thermostat Offers System Set-Up Capabilities with Simple, Easy-To-Use Menus

There is a Reduced Operating Mode which May be Used for Nighttime and Vacation Periods

With the Optional Floor Sensor this Thermostat Can Regulate Either the Floor or the Room Temperature or Both in that Case the Floor Sensor is Used as a Temperature Limiter, Either High or Low Limit

Thermostat May Also be Used to Control Relays and Other Low Voltage Controls

This Thermostat Uses Silent Operation Electronic Triac Output

Item#:
89643
Manufacturer Item:
236487-002
Manufacturer:
REHAU CONSTRUCTION LLC
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Item#:
89395
Manufacturer Item:
381-700-510
Manufacturer:
WEIL-MCLAIN CORP
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Item#:
89396
Manufacturer Item:
381-700-511
Manufacturer:
WEIL-MCLAIN CORP
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1/8", MPT, 125 PSI CWP, Chrome Plated Brass, Coin Key Air Vent Valve
Item#:
52719
Manufacturer Item:
110-338
Manufacturer:
LEGEND VALVE AND FITTING
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Key for 1/8" Coin Key Air Vent
Item#:
52718
Manufacturer Item:
110-340
Manufacturer:
LEGEND VALVE AND FITTING
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1/8", MPT, 200 PSI, Forged Brass, Automatic, Hot Water Air Vent
Item#:
52717
Manufacturer Item:
110-331
Manufacturer:
LEGEND VALVE AND FITTING
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1/8" x 1/8", MPT x MPT, 10 PSI, Chrome Plated Brass, Straight, Low Pressure, Non-Vacuum, Economy Air Vent

Straight configurations can be installed onto radiators or within the system, for branch or main venting functions (multiple vents may be required for this type of installation)

Durable chrome-plated finish is both decorative and functional

all configurations are plated and are more resistant to moisture staining than unplated vents

Item#:
52723
Manufacturer Item:
110-322
Manufacturer:
LEGEND VALVE AND FITTING
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3/4" x 1/2", MPT x FPT, 10 PSI, Chrome Plated Brass, Straight, Low Pressure, Non-Vacuum, Economy Air Vent

Straight configurations can be installed onto radiators or within the system, for branch or main venting functions (multiple vents may be required for this type of installation)

Durable chrome-plated finish is both decorative and functional

all configurations are plated and are more resistant to moisture staining than unplated vents

Item#:
52722
Manufacturer Item:
110-324
Manufacturer:
LEGEND VALVE AND FITTING
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1/8" x 1/8", MPT x MPT, Chrome Plated, Angle, Air Vent
Item#:
52721
Manufacturer Item:
110-321
Manufacturer:
LEGEND VALVE AND FITTING
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1/8" x 1/8", MPT x MPT, 10 PSI, Chrome Plated Brass, Adjustable Angle, Low Pressure, Non-Vacuum, Economy Air Vent

Angle configurations are typically Installed at the top of a steam radiator, for the purpose of venting trapped air by means of steam displacement

Durable chrome-plated finish is both decorative and functional

all configurations are plated and are more resistant to moisture staining than unplated vents

The adjustable T-90A is capable of slow, medium or fast venting, to accommodate extreme variations in room temperatures, such as colder rooms with radiators located farthest from the boiler, to hotter rooms with radiators located closest to the boiler

Item#:
52720
Manufacturer Item:
110-325
Manufacturer:
LEGEND VALVE AND FITTING
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3/4", Soldered x Soldered, 125 PSI, Bronze, Automatic, Air Eliminator

No Clog Vent

Dirt and Debris Resistant

360 Degree Adjustable Collar Ring for Installation Flexibility

Stainless Steel Concentrator Which Eliminates Gurgling Noise

Bronze Body for Rigid Construction

Guarantees Fast Start up with Automatic Venting

Micro-Bubble Concentrator has Three Times the Impact Area of Other Products

Helps Prevent Corrosion of System Components

Improves System Efficiency

Made in USA

Item#:
66509
Manufacturer Item:
PV075S/U
Manufacturer:
RESIDEO-ADEMCO
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New Style 90D, Air Vent Top for SuperVent PV Residential/Commercial Heating and Cooling System
Item#:
66517
Manufacturer Item:
PV-020RP/U
Manufacturer:
RESIDEO-ADEMCO
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2", FPT x FPT, 125 PSI, Bronze, Automatic, Air Eliminator

No Clog Vent

Dirt and Debris Resistant

360 Degree Adjustable Collar Ring for Installation Flexibility

Stainless Steel Concentrator Which Eliminates Gurgling Noise

Bronze Body for Rigid Construction

Guarantees Fast Start up with Automatic Venting

Micro-Bubble Concentrator has Three Times the Impact Area of Other Products

Helps Prevent Corrosion of System Components

Improves System Efficiency

Made in USA

Item#:
66515
Manufacturer Item:
PV200/U
Manufacturer:
RESIDEO-ADEMCO
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1", FPT x FPT, 125 PSI, 6.2 CV, Bronze, Universal, Air Purger

No Clog Vent

Dirt and Debris Resistant

360 Degree Adjustable Collar Ring for Installation Flexibility

Stainless Steel Concentrator Which Eliminates Gurgling Noise

Item#:
66514
Manufacturer Item:
PVU100/U
Manufacturer:
RESIDEO-ADEMCO
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1-1/2", FPT x FPT, 125 PSI, Bronze, Automatic, Air Eliminator

No Clog Vent

Dirt and Debris Resistant

360 Degree Adjustable Collar Ring for Installation Flexibility

Stainless Steel Concentrator Which Eliminates Gurgling Noise

Bronze Body for Rigid Construction

Guarantees Fast Start up with Automatic Venting

Micro-Bubble Concentrator has Three Times the Impact Area of Other Products

Helps Prevent Corrosion of System Components

Improves System Efficiency

Made in USA

Item#:
66512
Manufacturer Item:
PV150/U
Manufacturer:
RESIDEO-ADEMCO
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1-1/4", Soldered x Soldered, 125 PSI, Bronze, Automatic, Air Eliminator

No Clog Vent

Dirt and Debris Resistant

360 Degree Adjustable Collar Ring for Installation Flexibility

Stainless Steel Concentrator Which Eliminates Gurgling Noise

Bronze Body for Rigid Construction

Guarantees Fast Start up with Automatic Venting

Micro-Bubble Concentrator has Three Times the Impact Area of Other Products

Helps Prevent Corrosion of System Components

Improves System Efficiency

Made in USA

Item#:
66511
Manufacturer Item:
PV125S/U
Manufacturer:
RESIDEO-ADEMCO
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1", Soldered x Soldered, 125 PSI, Bronze, Automatic, Air Eliminator

No Clog Vent

Dirt and Debris Resistant

360 Degree Adjustable Collar Ring for Installation Flexibility

Stainless Steel Concentrator Which Eliminates Gurgling Noise

Bronze Body for Rigid Construction

Guarantees Fast Start up with Automatic Venting

Micro-Bubble Concentrator has Three Times the Impact Area of Other Products

Helps Prevent Corrosion of System Components

Improves System Efficiency

Made in USA

Item#:
66510
Manufacturer Item:
PV100S/U
Manufacturer:
RESIDEO-ADEMCO
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Item#:
65615
Manufacturer Item:
TK30PV125FM/U
Manufacturer:
RESIDEO-ADEMCO
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Item#:
65204
Manufacturer Item:
81660081
Manufacturer:
US BOILER-PARTS
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1-1/2", FPT x FPT, 125 PSI, Cast Iron, Heavy Duty, Air Purger

Directional Flow Arrow for Correct Installation

Item#:
65411
Manufacturer Item:
AP402/U
Manufacturer:
RESIDEO-ADEMCO
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1-1/4", FPT x FPT, 125 PSI, Heavy Duty Cast Iron, Air Purger

Honeywell AP400 Series Air Purgers Provide Air and Water Separation in Hydronic Heating Systems, Improving Efficiency and Reducing Noise

Solidly Constructed of Cast Iron

The Air Purgers Feature Tappings for Expansion Tank and Auto Air Vent Mounting

Directional Flow Arrow for Correct Installation

Item#:
65410
Manufacturer Item:
AP401/U
Manufacturer:
RESIDEO-ADEMCO
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1", FPT x FPT, 125 PSI, Cast Iron, Heavy Duty, Air Purger

Directional Flow Arrow for Correct Installation

Item#:
65409
Manufacturer Item:
AP400/U
Manufacturer:
RESIDEO-ADEMCO
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1/4" NPT, 50 PSI, Air Vent
Item#:
66761
Manufacturer Item:
426-3_1/4
Manufacturer:
TACO R C SALES&SERVICE
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120 VAC, 15 A, 3-Zone, Expandable Switching Relay with Priority

Front Diagnostic Lights

Switchable Priority

Built-In Priority Protection

Simplified Wiring

Premium Sealed Relays

Compact Design

Fuse Protected

100 Percent Factory Tested

Isolated End Switch

Contractor Friendly PC Board Layout

Universal Thermostat Compatibility

24 Volt Power Output for Hard Wired Thermostats

Field Replaceable Transformer

Add-On Power Control Plug

Built-In Post Purge and Pump Exercise Functions

Switchable Primary Circulator Output

Two Boiler Contacts, Utilizes Full Functionality of Mod-Con Boilers

Expandable to 20 Zoning Panels

Interface with EXP Zone Valve Controls

UL Approved

Made in USA

Item#:
65429
Manufacturer Item:
SR503-EXP-4
Manufacturer:
TACO R C SALES&SERVICE
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120 VAC, 15 A, 2-Zone, Switching Relay with Priority

Front Diagnostic Lights

Switchable Priority

Built-In Priority Protection

Simplified Wiring

Premium Sealed Relays

Compact Design

Fuse Protected

100 Percent Factory Tested

Isolated End Switch

Contractor Friendly PC Board Layout

Universal Thermostat Compatibility

24 Volt Power Output for Hard Wired Thermostats

Field Replaceable Transformer

UL Approved

Made in USA

Item#:
65428
Manufacturer Item:
SR502-4
Manufacturer:
TACO R C SALES&SERVICE
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120 VAC, 12 A, 1-Zone, Switching Relay

Front Diagnostic Lights

Switchable Priority

Built-In Priority Protection

Simplified Wiring

Premium Sealed Relays

Compact Design

Fuse Protected

100 Percent Factory Tested

Isolated End Switch

Contractor Friendly PC Board Layout

Universal Thermostat Compatibility

24 Volt Power Output for Hard Wired Thermostats

Field Replaceable Transformer

UL Approved

Made in USA

Item#:
65427
Manufacturer Item:
SR501-4
Manufacturer:
TACO R C SALES&SERVICE
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120 VAC, 20 A, 6-Zone, Expandable, Switching Relay with Priority

Front Diagnostic Lights

Switchable Priority

Built-in Priority Protection

Simplified Wiring

Premium Sealed Relays

Compact Design

Fuse Protected

100% Factory Tested

Isolated End Switch

Contractor Friendly PC Board Layout

Universal Thermostat Compatibility

24 Volt Power Output for hard wired thermostats

Field Replaceable Transformer

Item#:
65453
Manufacturer Item:
SR506-EXP-4
Manufacturer:
TACO R C SALES&SERVICE
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120 VAC, 20 A, 4-Zone, Expandable, Switching Relay with Priority

Front Diagnostic Lights

Switchable Priority

Built-in Priority Protection

Simplified Wiring

Premium Sealed Relays

Compact Design

Fuse Protected

100% Factory Tested

Isolated End Switch

Contractor Friendly PC Board Layout

Universal Thermostat Compatibility

24 Volt Power Output for hard wired thermostats

Field Replaceable Transformer

Item#:
65450
Manufacturer Item:
SR504-EXP-4
Manufacturer:
TACO R C SALES&SERVICE
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