Maxitrol RV111 User Manual

Gas Appliance Pressure Regulators

Straight-Thru-Flow Design

RV52, RV53, RV61, RV81, RV91, RV111, and RV131

1/2", 3/4", 1", 1¼", 1½", 2", 2½", 3" & 4"

design certified

Maximum Pressure

CSA Rated (except RV131) ............ 1/2 psi (35 mbar)

Maxitrol Tested*

RV52 & RV53 .................................. 1/2 psi (35 mbar)

RV61, RV81, RV91, & RV111 .......... 1 psi (70 mbar)

RV131 .............................................. 2 psi (140 mbar)

* Do not use if inlet pressure is more than 10 times

desired outlet pressure

EMERGENCY EXPOSURE LIMITS (Maxitrol Tested)

RV52 & RV53 .................................. 3 psi (210 mbar)

RV61, RV81, RV91 & RV111 ........... 5 psi (350 mbar)

RV131 .............................................. 15 psi (1050 mbar)

GAS CONTAINMENT EXPOSURE LIMITS*

RV 52 & RV53 ................................. 15 psi (1050 mbar)

RV61, RV81, RV91, RV111,

& RV131 .......................................... 25 psi (1750 mbar)

* Please note that internal damage may occur when

exposed to these pressures.

AMBIENT TEMPERATURE LIMITS

RV52, RV53, RV61, RV81,

RV91 & RV111 .................... -40° to 205° F (-40° to 96° C)

RV131 ................................. -40 to 125° F (-40 to 52° C)

........................................................

GASES: Suitable for application in natural, manufactured, mixed gases, liquefied petroleum gases and LP gas-air mixture piping systems.

S-T-F Series

Straight-Thru-Flow Design

RV series

All models except RV131 are CSA design certified for 1/2 psi rated pressure under the ANSI standard for gas pressure regulators; and CSA listed to certify compliance with nationally published safety, construction, and performance standards.

They are main burner only, non-lockup type. They should not be used as a line gas pressure regulator ahead of low pressure controls. Use only where downstream controls can operate at line pressure. Refer to other Maxitrol sales bulletins for proper types.

RV52, RV53, RV61, RV81, RV91, RV111, and RV131

FEATURES

• Greater accuracy—higher pressure drop capacity

• Outlet pressures available to 42” w.c.

• Available in full range of pipe sizes from 1/2"

to 4"

• All models tapped with NPT vent bosses

• CSA Design Certified (except RV131)

BENEFITS

• Unique conical valve design fills need of combining

good regulation with high capacity in low to intermediate pressure range

• Allows more pressure drop to be assigned to piping

and valves—permits reduction in manifold size

• Provides accurate, sensitive regulation at inlet

pressures as low as 3” w.c.

• RV131 only, provides bonus benefits of high capacity

and good performance at pressures of 1 psi or higher

• Ease of installation and replacement

valves are coated with Teflon® for long life. Diaphragm material is cut from the finest synthetic coated fabrics available. All other parts are carefully specified corrosionresistant or plated material.

Pipe sizes of 1/2”, 3/4”, 1”, 1-1/4”, 1-1/2”, 2”, 2-1/2", 3”, and 4” are available. Models through the 3" size are threaded, the 4" RV131 is flanged.

The RV52, RV53, & RV61 are suitable for multipoise mounting. The RV81, RV91, RV111, & RV131 are recommended for normal horizontal position only.

Maxitrol's original Straight-Thru-Flow design meets your needs for high capacities at low inlet pressures. The basic difference between S-T-F design and other type regulators lies in the conical valve. The cone principal permits gas to flow straight through the regulator without changing directions. Frictional flow resistance is reduced, resulting in greater capacity.

The improved flow pattern provides accurate sensitive regulation at extremely low pressure differentials. The ability of the regulator to handle large capacity appliances with limited supply pressure offers a definite advantage to designers of commercial and industrial gas-fired equipment. Models up to the three inch pipe size have high strength pressure cast aluminum housings. The RV131 four inch model is of cast iron and steel construction. RV61, RV81, RV91, RV111, & RV131 internal conical

At the emergency exposure limits, there may be no regulation, but all models will contain gas. They will suffer no internal damage and will resume regulation when normal pressure is restored.

Straight-Thru-Flow appliance regulators are intended for use with all fuel gases, and may also be used with air or other noncorrosive gases within their pressure limits.

Typical applications include all types of residential, commercial and industrial gas-fired appliances and equipment used on low pressure gas supply. See Maxitrol’s ”Spring Selection Chart“ for part numbers, color and size of springs.

Teflon is a registered trademark of DuPont Corporation.

NOTE: All Maxitrol appliance regulators should be installed in accordance with Maxitrol’s “Safety Warning” bulletin.

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