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Maxitrol SR400,
SR500 & SR 600
2-Stage Regulators

Maxitrol SR400, SR500 & SR 600 2-Stage Regulator

The SR Series provides an economical means of flame staging where infinite modulation is not required. Turn down on low fire is from 25% to 75% of high fire — flow rates to 1,000 CFH.

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Maxitrol
325-3, 325-5A,
325-7
Appliance Regulators

Maxitrol 325-3,325-5A,325-7 Appliance Regulators

When vented to the outdoors the 325 Series is suitable for multi-poise mounting. When using the vent limiting device, the regulator (325-3, 325-5A) must be mounted in a horizontal upright position.

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Maxitrol
R400, R500, R600, R400S, R500S, R600S
Balanced Valve
Design Regulators

R400,R500,R600,R400S,R500S, R600S Balanced Valve Design Regulators

The R & RS regulators are for main burner and pilot load applications. Ideal for use with infrared heaters and pilot lines on large industrial heaters and bakers. May also be used in residential applications.

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Maxitrol
325 Series
Lever Acting
Design Regulators

Maxitrol 325 SeriesLever Acting Design Regulator

Maxitrol's 325 Series regulators are for 2 psi and 5 psi piping systems. Models available for appliance main burner or pilot applications and as line pressure regulators.

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Maxitrol
210 & 220 series Pilot Loaded Regulator

Maxitrol 210 & 220 series Pilot Loaded Regulator

The 220 Series, utilizing a servo-operated design rather than the more conventional spring-loaded design, delivers higher outlet pressure than spring loaded models.

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Maxitrol
RV/CV Series
RV12, RV20,
RV47, RV48,
and CV47
Poppet Design Regulator

Maxitrol RV/CV Series Poppet Design Regulator

The poppet model RV Series is designed primarily for main burner and pilot load applications. They are available from 1/8" to 3/4" pipe size and rated for up to 1/2 psi (35 mbar).

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Maxitrol RV52, RV53, RV61, RV81, RV91, RV111, RV131 Straight-Thru-Flow Design Regulators

Maxitrol Straight-Thru-Flow Design Regulators

Maxitrol's original straight-thru-flow design regulators are main burner only, non-lockup type. Typical applications include residential, commercial, and industrial gas-fired appliances and equipment used on low pressure gas supply.

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Maxitrol
RZ & 21OZ Zero Governor
Regulators

Maxitrol RZ - 21OZ Zero Governor Regulators

Maxitrol Zero Governor model regulators are used for flow control of burners, nozzle mixers, mixing tees and proportional premixers.

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Pyronics
5104 - BRR Balanced Ratio Regulator

Pyronics 5104 - BRR Balanced Ratio Regulator

BRR - Balanced Ratio Regulators are designed to provide accurate air/fuel ratio control of cross-connected combustion systems. The delivery pressure of the BRR will match that of the cross-connected signal being applied to the upper diaphragm chamber.

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Pyronics
BZR Series Balanced Zero Regulator

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Balanced Zero Regulators feature a rugged, large diaphragm actuated valve assembly, sensitively balanced at near zero pressure. Gas flow is initiated by a very small pressure differential across the main diaphragm.

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Pyronics
5105 - FCR
5105 - FCR - PC Flow Control Regulators

Pyronics 5105 - FCR - PC Flow Control Regulators

FCR - Flow Control Regulators are double diaphragm spring balanced flow ratio control regulators that offer maximum control and fuel efficiency on gas-fired applications involving preheated air to the burners, or where burners fire against a varying back pressure.

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Pyronics
5106-BZR-B
Spring Biased Regulators

Pyronics 5106-BZR-B Spring Biased Regulators

BZR-B is designed with an adjustable compensation spring to bias the regulator providing a smooth transition to excess air operation at low fire, Using a gas adjuster downstream of a negative biased regulator.

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Pyronics
5107 - PCR
Pilot Control Regulators

Pyronics 5105 - FCR - PC Flow Control Regulators

PCR - Pilot Control Regulators are the oil or dual-fuel versions of the FCR regulators (Bulletin 5105) and offer maximum control and fuel efficiency on oil or dual-fuel applications involving preheated air to the burners, or where burners fire against a varying back pressure.

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Pyronics
5108-2TDL,
5108-2TDR,
5108-2TDL-R,
5108-22TDL-R
Regulators
Loader Assembly

Pyronics Regulators Loader Assembly

BZR-B is designed with an adjustable compensation spring to bias the regulator providing a smooth transition to excess air operation at low fire, Using a gas adjuster downstream of a negative biased regulator.

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Pyronics
5116-BRR-300 Balanced Ratio Regulator

Pyronics 5116-BRR-300 Balanced Ratio Regulator

BRR-300 -- Balanced Ratio Regulators are designed to provide accurate air/fuel ratio control of cross-connected combustion systems. The delivery pressure of the BRR-300 will match that of the cross-connected signal being applied to the upper diaphragm chamber

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Pyronics
5201-SR,
5202-SR-PC,
5211-SR-300,
5212-SR-PC-300 Reducing Regulators

Pyronics 5201-SR,5202-SR-PC,5211-SR-300,5212-SR-PC-300 Reducing Regulators

The SR Series Pressure Reducing Regulator is designed for industrial furnaces and heating applications. These regulators will maintain a constant outlet pressure over a wide range of flows even if the inlet pressure varies.

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Pyronics
5220-SB,
5221-SB-300
Relief Regulators

Pyronics 5220-SB,5221-SB-300 Relief Regulators

SB Relief Regulators are versatile - offering fast, positive response service for air, all types of gas fuels, and inert gas applications. They may be used as bypass valves in automatic safety systems.

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Pyronics
5230-SRB,
5231-SRB-300 Combination
Reducing-Relief Regulators

Pyronics 5230-SRB, 5231-SRB-300 Combination Reducing Relief Regulators

SRB Combination Reducing - Relief Regulators serve a dual function. They relieve upstream pressure while at the same time controlling downstream pressure.

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Pyronics
5260-AR,
5261-AR-HP5
Air Control Regulators

Pyronics 5260-AR, 5261-AR-HP5 Air Control Regulators

AR Air Regulators in multiple burner systems hold constant airfuel ratio and mixture pressure with reducing burner port area of up to 90%. Used in the air line, the top main diaphragm chamber is referenced through a bleed loader set for the desired burner mixture pressure.

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Pyronics 5271
SR Regulators
Repair Kit

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Pyronics, Inc. Does not recommend field repairs of 5201-SR Regulators. It is extremely difficult to get the same setting in the field as opposed to a factory built or rebuilt unit. In addition, there is a possibility of the regulator being assembled in an improper manner which could create a hazardous condition.

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Pyronics
5301-OAR
Oil-Air Ratio Regulators

Pyronics 5105 - FCR - PC Flow Control Regulators

Oil-Air Ratio Regulators are used to proportion fuel flows to modulating oil burners. Combustion air flows produce a proportional pressure signal that is applied to the regulator to set the outlet oil pressure.

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