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Introduction
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Figure 1.
133 Series Regulator
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The 133 Series direct-operated regulators are ideal for industrial and commercial applications supplying gas to furnaces, burners, and other appliances. A balancing system enables the regulator to control gas pressure accurately for maximum combustion efficiency despite varying inlet pressures.
Body Sizes and End Connection Styles
2-inch body, cast iron NPT female, cast iron ANSI Class 125 FF flanged, steel NPT female, or steel ANSI Class 150 RF flanged.
Features
- Bubble-Tight Shutoff
- No Special Seat Adjustment Required
- Spring and Diaphragm Effects Minimized
- Easy Access to Trim Parts
Maximum Allowable Inlet Pressure
133L: 60 psig (4,1 bar)
133H: 60 psig (4,1 bar)
Maximum Outlet Pressure
133L: 18-inches w. c. (44,8 mbar)
133H: 3 psig (0,21 bar)
Outlet Pressure Range
133L: 8-1/2 to 18-inches w.c. (21,2 mbar to 44,8 mbar)
133H: 1.5 to 3 psig (0,10 to 0,21 bar)
Pressure Registration
External
Temperature Capabilities
-20° to 150°F (-29° to 66°C)
Additional Technical Data
For more technical information contact your Fisher Distributor or refer to LP-31 Equipment Buyer’s Guide.
Figure 2. Dimensions
Figure 3. 133L Series Operational Schematic
| Table 1. Regulator Specifications |
| TYPE |
INLET AND OUTLET CONNECTION |
OUTLET PRESSURE RANGE |
OUTLET PRESSURE SETTING |
CAPACITY IN BTUH OF PROPANE(1) |
ORDER NUMBER |
| 133L |
2-inches FNPT |
81/2 to 18-inches w. c. (21,2 to 44,8 mbar) |
14-inches w. c. (35 mbar) |
70,875,000 |
133L-4 |
| 133H |
1.5 to 3 psig (0,10 to 0,21 bar) |
3 psig (0,21 bar) |
66,150,000 |
133H-1 |
| 1 Capacities are based on inlet pressure 20 psig (1,4 bar) greater than outlet pressure with 20% droop. |
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