Fisher R222 Specifications

Bulletin LP-7:R222

Type R222 Second-Stage Regulator

Introduction

The T ype R222 is an Underwriters Laboratories (UL®)
listed regulator designed for T wo-Stage LP-Gas systems.
The unit is designed to reduce the outlet pressure from

a rst-stage regulator (usually 10 psig / 0.69 bar) to an
outlet pressure of 11-inches w.c. / 27 mbar. The unit’s
capacity, up to 650,000 BTU/hour, is sized for small
domestic loads. The units compact size makes it ideal for
tight t applications. A screened drip-lip vent is oriented
over the inlet in the standard conguration.

Features

• 20 Year Recommended Replacement Life—The

Type R222 is designed using rugged time proven

design concepts and constructed of corrosion
resistant materials, both internally and externally.
With proper installation and periodic inspection and
maintenance, the Type R222 regulator will meet a

20 Year Recommended Replacement Life.

• Dual Gauge Taps—Built-in 1/8-inch threaded NPT
gauge taps, oriced to a number 54 drill size on the

inlet and outlet side of the regulator allow for easy

gas system checks.

• Durability—The design utilizes the same

durable valve stem linkage design used in
R600 Series regulators for reliable lockup and

regulation performance.

Figure 1. Type R222 Second-Stage Regulator

• Superior Overpressure Protection—The

combination of a high capacity relief valve and
large vent provide overpressure protection which

exceeds UL standards and is capable of limiting the

downstream pressure to 2 psig / 0.14 bar even in a

double failure situation when used with a Fisher

Type R122H or R622H rst-stage regulator.

• Corrosion-Resistant—Added corrosion resistance

from an internal and external coating process for
all castings prior to painting, stainless steel relief

valve spring and retainer and a corrosion resistant
relief valve seat.

December 2012

• Improved Regulation—A large fabric-reinforced

diaphragm delivers accurate and stable regulation.

• Easy Installation—The units compact size and

easily accessible inlet and outlet wrench ats
make installation easy even in the tightest locations.
Optional vent orientation with the vent oriented over
outlet is available.

www.sherregulators.com

• Positive Draining Spring Case—When installed

properly with the spring case vents pointed down,

the design allows moisture formed in the spring
case to drain out limiting the problems with

corrosion and freezing water in the spring case.

D450154T012

Bulletin LP-7:R222

3/8-18 NPT
SCREENED VENT

1/8-27 NPT

INLET/OUTLET

GAUGE TAPS

NO. 54 RESTRICTED

1/2-14 NPT
INLET FITTING

1.1 /

27.9

4 /

102

6.5 /
165

Figure 2. Type R222 Dimensions

Table 1. Ordering Information

TYPE NUMBER

R222-BAF

R222-BAFXA

1. Capacity is based on 10 PSIG / 0.69 bar inlet pressure and 2-inches w.c. / 5 mbar droop.

2. Spring case vent over outlet.

(2)

CAPACITY, BTU/HOUR

PROPANE

(1)

650,000 1/2 x 1/2-inch NPT

CONNECTIONS

INLET X OUTLET

1.0 /

25.4

OUTLET PRESSURE

11-inches w.c. /

SETTING

27 mbar

4.5 /
114

1/2-14 NPT

0.9 /

22.9

MOUNTING SCREW HOLES

INCHES /

mm

OUTLET PRESSURE

RANGE

9.5 to 13-inches w.c. /

24 to 32 mbar

LP-Gas Equipment

Emerson Process Management
Regulator Technologies, Inc.

USA - Headquarters
McKinney, Texas 75069-1872, USA
Tel: [phone]
Outside U.S. [phone]

For further information visit www.fisherregulators.com

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a business of Emerson Process Management.

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or

guarantees, express or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs or specications of such

products at any time without notice.

Emerson Process Management does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Emerson
Process Management product remains solely with the purchaser.

©Emerson Process Management Regulator Technologies, Inc., 2003, 2012; All Rights Reserved