Fisher 64 Operating Manual

Instruction Manual
Form MCK-2133

January 2010

64 and 67C Series Regulators

64 and 67C Series Regulators Instruction Manual

WARNING

!

Failure to follow these instructions or to properly
install and maintain this equipment could result in
an explosion and/or re causing property damage
and personal injury or death.

Fisher® equipment must be installed, operated,
and maintained in accordance with federal,
state, and local codes and Emerson Process
Management Regulator Technologies, Inc.
instructions. The installation in most states must
also comply with NFPA No. 54 and 58 standards.

Only personnel trained in the proper procedures,
codes, standards, and regulations of the
LP-Gas industry should install and service
this equipment.

W8810

67C SERIES REGULATORS

THINGS TO TELL THE GAS CUSTOMER:

1. Point out the regulator’s vent to the customer (or vent
assembly or vent tube), and stress that this opening must
remain unobstructed at all times. Tell the customer to be
sure to check the vent opening after a freezing rain, sleet
storm, or snow to make sure ice has not formed in the vent.

2. Show the customer the shutoff valve on the container. The
customer should close this valve immediately if gas is
smelled, appliance pilot lights fail to stay on or appear higher
than usual, or any other abnormal situation occurs.

3. Tell the customer to call your company to service the
regulator if the regulator vents gas or a leak develops in the
system. Only a qualied gas service person should

install or service the regulator.

Introduction

Scope of the Manual

This manual provides instructions and maintenance for the
following high-pressure regulators: Types 64, 64KB, 64SR,
67CW, 67CH, 67CD, and 67CN regulators.

Description

The 64 and 67C Series direct-operated regulators (Figure 1) are
designed for high-pressure (pounds per square inch) service and can
be used on either vapor applications in LP-Gas, Natural Gas, and Air
or liquid LP-Gas applications. Depending upon type, outlet pressure
ranges from 3 to 135 psig (0,21 to 9,3 bar). Type 64SR can be used
as a First Stage LP-Gas regulator–reducing tank pressure to
10 psig (0,69 bar) for a Second Stage regulator. Type 64KB is the
only regulator in this series suitable for anhydrous ammonia (NH3)
service. The regulators are normally painted red.

P1027

64 SERIES REGULATOR

Figure 1. 64 and 67C Series Regulators

CAUTION

Do not use the 67C, 64, or 64SR Series regulators
in anhydrous ammonia (NH3) service. They
contain brass materials that are not compatible
with anhydrous ammonia (NH3).

Table 1. Available Congurations

TYPE DESCRIPTION

Basic regulator with four spring ranges from 3 to 100 psig

64

(0,21 to 6,9 bar).
Internal relief version with three spring ranges from 3 to 35 psig

64SR

(0,21 to 2,4 bar).
For use with anhydrous ammonia (NH3) with handwheel

64KB

adjustment and ve spring ranges from 3 to 100 psig
(0,21 to 6,9 bar). Includes a special diaphragm protector.

Basic regulator with wrench adjustment and four spring ranges

67CW

from 3 to 135 psig (0,21 to 9,3 bar); no relief.

67CH Basic regulator with handwheel adjustment.

67CD Basic regulator with dial cap adjustment.

67CN Basic regulator, factory set with no eld adjustment.

www.sherregulators.com/lp

D450128T012

64 and 67C Series Regulators

Specications

Body Sizes, Inlet and Outlet Connection Style

64 Series: 1/2-inch NPT, inlet and outlet
67C Series: 1/4-inch NPT, inlet and outlet

Side Outlet Connection Style (Plugged)

1/4-inch NPT; pressure gauge can be installed

Maximum Inlet Pressure (Body Rating)

(1)

250 psig (17,2 bar)

Maximum Emergency Outlet Pressure

(1)

64 Series: 220 psig (15,2 bar)
67C Series: 50 psig (3,4 bar) over outlet pressure

Pressure Registration

Internal

1. The pressure/temperature limits in this Instruction Manual or any applicable standard limitation should not be exceeded.

Wide-Open Flow Coefcients

64 Series: Cg: 35.6; Cv: 0.36; C1: 39.0
67C Series: Cg: 11.7; Cv: 0.36; C1: 32.2

Regulator Temperature Capabilities

64 Series: -20° to 150°F (-29° to 66°C)
67C Series: -20° to 180°F (-29° to 82°C)

Spring Case Vent Location

64 Series: 1/4-inch NPT screened over side outlet tap
67C Series: Aligned with inlet, other positions optional

Approximate Unit Weights

64 Series: 2.25 pounds (1 kg)
67C Series: 1 pound (0,5 kg)

Table 2. Outlet Pressure Ranges

SPRING RANGE,

PSIG (bar)

3 to 15 (0,21 to 1,0) - - - - - - - - 10 (0,69) 10 (0,69)

3 to 20 (0,21 to 1,4) 15 (1,0) - - - - 15 (1,0) 15 (1,0) 64KB only

5 to 35 (0,34 to 2,4) 20 (1,4) 10 (0,69); 15 (1,0); or 20 (1,4) 20 (1,4) 20 (1,4)

20 to 50 (1,4 to 3,4) 40 (2,8) 67CD only - - - - - - - - - - - -

30 to 60 (2,1 to 4,1) 40 (2,8) 67W and 67CH only - - - - - - - - 40 (2,8)

35 to 100 (2,4 to 6,9) 50 (3,4) 67CD only - - - - - - - - 50 (3,4)

35 to 135 (2,4 to 9,3) 50 (3,4) 67W and 67CH only - - - - - - - - - - - -

1. All springs can be backed off to 0 psig (0 bar) except Type 67CN. However, for the highest capacity and most accurate control, use the lowest spring that can be adjusted to the required setpoint.

(1)

67CW, 67CD, and 67CH 67CN 64SR 64 and 64KB

TYPE NUMBER AND FACTORY SETPOINT, PSIG (bar)

Specications

Some general 64 and 67C Series ratings and other specications
are given on Specications section. A spring case label gives the
spring range for the regulator as it comes from the factory.

Installation

WARNING

!

Failure to follow these instructions and warnings
could result in personal injury or property damage.

All vents should be kept open to permit free ow
of air into and out of the regulator.

Protect openings against the entrance of rain,
snow, ice formation, paint, mud, insects, or any
other foreign material that could plug the vent or
vent lines.

LP-Gas may discharge to the atmosphere through
the vent of a Type 64SR. The internal relief valve
of the Type 64SR regulator does not provide
full overpressure protection, but is designed for
minor seat leakage only. An obstructed vent
which limits air or gas ow can cause abnormally
high outlet pressure. A vent line to a remote,
safe location outdoors is required on permanent
indoor installations or on installations where
there can be a hazardous accumulation of gas.

Never use a 64 or 67C Series (pounds to pounds)
regulator on low-pressure (inches of water
column) service.

1. Regulator operation within ratings does not preclude the
possibility of damage from debris in the lines or from external
sources. Regulators should be inspected for damage
periodically and after any overpressure condition.

2. Only personnel qualied through training and experience
should install, operate, and maintain a regulator. Make sure
that there is no damage to or foreign material in the regulator.
Also, ensure that all tubing and piping is free of debris.

3. Install the regulator so that ow is from the IN to the OUT
connection as marked on the regulator body.

4. Protect the regulator from vehicular trafc or damage from
other external sources.

5. Install the regulator high enough above ground level, at least
18-inches (457 mm), so that rain splatter cannot freeze in the
vent. Do not install the regulator in a location where there can
be excessive water accumulation or ice formation, such as
directly beneath a downspout, gutter, or roof line or a building.

6. A regulator installed outdoors without a protective hood must
have its vent pointed vertically down to prevent clogging and
moisture accumulation. A clogged spring case vent hole may
cause the regulator to function improperly. To keep this
vent hole from being plugged (and to keep the spring case

2