Brochure

© 2015, Maxitrol Company. All Rights Reserved. © 2015 Maxitrol Company. All Rights Reserved.
DRAFT 09.18.2013
5
Model Designations
APPLIANCE REGULATORS
Models having a sufx letter or a combination of sufx letters listed below indicates the design modications described.
A ............Limited spring adjustment (RV47A & CV47A**, short stack*).
C ............Convertible regulators***; preset to deliver outlet pressures for either natural or LP gases.
(RV20, RV47, RV48, CV47)
D ............Integral ball check limiting device; permits higher maximum individual load.
(see Capacities and Pressure Drop, page 6)
E .............Excessive pressure rated.
F .............Factory-set; xed/non-adjustable regulator.
I .............Left side integral manual valve; outlet faces main inlet (CV47).
L .............Integral vent limiting orice as the breather hole - with dust cap.
M ...........B.S.P. - PL parallel thread - conforms to ISO 7-1, where pressure tight joints are made on the threads.
N ............Internal by-pass orice to prevent lockup. Main burner only (RV20, RV47, RV48, CV47).
R ............Right side
+
integral manual valve; outlet faces main outlet (CV47).
SR ...........Side pressure tap; right side
+
1/8” NPT (RV20, RV47, RV48, CV47I).
S .............Side pressure tap; left side
+
1/8” NPT (RV20, RV47, RV48, CV47R).
T.............Higher ambient temperature range.
V ............Threaded vent connector, 5/16-24 for 1/8” tubing connection (RV20) - with dust cap.
* Short stack models have an adjustment range of less than 2” w.c. (0.5 kPa); these models are advantageous
where installation must be made in a limited space.
** CV47 is best described as a RV47 with an extra regulated outlet. This outlet contains an integral manual valve
located on the valve body’s side.
*** Convertible regulators are designed to deliver either of two xed outlet pressures for natural or LP gases.
RV20C: NAT GAS: 4.0” w.c. (1.0 kPa); LP: 10” w.c. (2.5 kPa)
RV47C, RV48C, CV47C: NAT GAS: 4.0”, 5.0” or 6.0” w.c. (1.0, 1.3, or 1.5 kPa); LP: 10” or 11” w.c. (2.5 or
2.8 kPa)
+ Left and right is determined when viewing regulator from outlet side with stack up.
NOTE: The RV48 model may be used with either a 12A04 ball check device, or a 12A06 xed orice vent limiting device.
See page 62 for vent accessory options.
C
US
®
UA.TR.012-13