Model 64-35 High Pressure LPG Fisher Gas Regulator 64 Pressure Reducing Valve

Emerson American Fisher Model 64-35 High Pressure LPG Regulator

64 Pressure Reducing Regulator

64 Series adjustable high-pressure propane regulators offer a wide range of available pressure ranges. High-pressure regulators usually reduce tank pressure to an intermediate pressure for use by another regulator. They may be used as high-pressure regulators on distribution systems when used in conjunction with first-stage downstream regulators.

When equipped with an internal relief valve (64SR Series), the regulator may be used as a final-stage regulator on high-pressure systems. It may also be used as a first-stage regulator when set at 10 psig / 0.69 bar or less.

64 Series has a special Polytetrafluoroethylene (PTFE) diaphragm protector that makes it suitable for anhydrous ammonia (NH₃) service. The 1/4-inch FNPT tapped and plugged side outlet can be used to install a pressure gauge or a hydrostatic relief valve.

Table 1. Outlet Pressure Ranges and Spring Selection

Features

Versatility

Body Side Connection

Easy Maintenance

UL Listed

Specifications

Body Size and End Connection Style

End: 1/2-inch NPT
Gauge Outlet: 1/4-inch NPT

Maximum Inlet Pressure
250psi /17.2Bar

Spring Range

5~35psig (0.34~2.41bar)

Pressure Registration
Internal

Temperature Capabilities
-20º to 150ºF / -29º to 66ºC

The Type 64R has an integral low-capacity relief valve. The valve stem seats against a drilled hole in the diaphragm plate. If the reduced pressure should exceed the set pressure, the diaphragm lifts 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.

Fisher 64 Series regulator is also available with a handwheel. An optional handwheel is available for panel mounting.

1. Use qualified personnel when installing, operating, and maintaining these regulators. Before installation inspect for damage. Make sure there is not any foreign material in the regulator and all tubing and piping are clean and unobstructed.

2. If installing the regulator at an outside location, point the spring case vent in the downward direction to protect it from getting plugged or from collecting moisture, corrosive chemicals, or other foreign materials. Spring case vent orientation may be changed by rotating the spring case with respect to the regulator body.

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

4. To remotely vent the spring case, remove the screen, if present, and connect 1/4-inch NPT piping or tubing to the spring case connection. The piping or tubing should vent the spring case to a safe location, have as few bends as possible, and have a screened vent on its exhaust end that is weather resistant and always pointed in the downward direction.

5. Like most regulators, 64 Series regulators have outlet pressure ratings lower than inlet pressure ratings. Although types with internal relief include limited downstream overpressure protection, all types may require additional relief protection for some service conditions if the actual inlet pressure can exceed the regulator outlet pressure rating or the pressure ratings of any downstream equipment. Inspect a regulator periodically and after any overpressure condition.

6. Each regulator is factory-set for the pressure setting specified on the order. If no setting is specified, outlet pressure is factory-set at the midrange of the control spring.