64 Series
Fisher Controls
Instruction Manual
64 Series Regulators
R
May 1994
Form 1245
Introduction Scope of Manual This manual provides instructions for the installation, adjustment, maintenance, and parts ordering for 64 Series regulators. These regulators usually are shipped separately for line or panel mounting, although sometimes they are shipped installed on other equipment. However, instructions and parts lists for other equipment are found in separate manuals.
Product Description The 64 Series regulators (figure 1) are spring-loaded, selfoperated devices typically used to deliver constant reduced pressure of gaseous fluids to meet the flow demands of downstream equipment. These regulators have a body side outlet that is drilled and tapped. This outlet may be plugged or used as a gauge connection. A description of the regulator configurations covered in this instruction manual is as follows: Type 64—Basic regulator with seven spring ranges. Type 64R—Internal relief version of the Type 64 regulator.
W1943
Figure 1. 64 Series Regulator
plate. If the reduced pressure in any of these regulators should exceed the set pressure, the diaphragm will automatically be lifted off the valve stem so that a limited amount of excess pressure can flow into the spring case and bleed out through a screened vent. A 64 Series regulator is also available with a handwheel, and if it is desired, a handwheel for panel mounting can be included.
Type 64B—Anhydrous ammonia (NH3) service version of the Type 64 regulator with five spring ranges.
Specifications Table 1 lists specifications for the 64 Series regulators.
D100316X012
Regulators with an R suffixed to the type number have integral low-capacity relief valves. In these constructions, the valve stem seats against a drilled hole in the diaphragm
eFisher Controls International, Inc. 1981, 1994; All Rights Reserved