|
Introduction
 |
Figure 1. 98H Series
Relief Valve |
The 98H Series are direct-operated relief valves for use on relief and backpressure applications involving large liquid propane pumping systems and vaporizers. Internal pressure registration eliminates the need for a control line.
Maximum Relief (Inlet) Pressure
400 psig (27,5 bar)
Relief Pressure Range
See Table 2
Temperature Capabilities
-20° to 150°F (-29° to 66°C)
Body Sizes and End Connection Styles
See Table 2
Additional Technical Data
For more technical information contact your Fisher Distributor or refer to LP-31 Equipment Buyer’s Guide.
Features
- Internal Registration
- Direct-Operated
- Compact
Figure 2. 98H Series Operational Schematic
Figure 3. Dimensions
| Table 1. Dimensions |
BODY SIZE,
INCHES |
A |
B |
C |
D |
| Inches (mm) |
| 1/2 |
4.25 (108) |
.88 (22) |
7.19 (183) |
4.25 (108) |
| 3/4 |
5.0 (127) |
1.25 (32) |
9.69 (246) |
6.06 (154) |
| 1 |
5.0 (127) |
1.25 (32) |
9.69 (246) |
6.06 (154) |
| Table 2. Valve Specifications |
BODY SIZE
AND END
CONNECTION
STYLE |
RELIEF
PRESSURE
RANGE,
PSIG (BAR) |
RELIEF
PRESSURE
SETTING,
PSIG (BAR) |
PROPANE RELIEF CAPACITY IN GALLONS PER MINUTE (LITERS PER MINUTE) AT
FOLLOWING PRESSURE BUILDUP OVER RELIEF SETTING |
ORDER NUMBER |
| 5 Psig (0,34 Bar) |
10 Psig (0,69 Bar) |
20 Psig (1,4 Bar) |
30 Psig (2,1 Bar) |
50 Psig (3,4 Bar) |
| 1/2-inch FNPT |
25 to 75 (1,7 to 5,2) |
50 (3,4) |
5.2 (19,7) |
8.0 (30,3) |
12.6 (47,7) |
16.8 (63,6) |
23.1 (87,4) |
98H-13 |
| 70 to 140 (4,8 to 9,7) |
100 (6,9) |
4.2 (15,9) |
7.3 (27,6) |
13.6 (51,5) |
19.2 (72,7) |
27.3 (103) |
98H-14 |
| 3/4-inch FNPT |
70 to 140 (4,8 to 9,7) |
100 (6,9) |
30.8 (117) |
49.0 (185) |
67.9 (257) |
79.8 (302) |
93.1 (352) |
98H-22 |
| 1-inch FNPT |
70 to 140 (4,8 to 9,7) |
100 (6,9) |
30.8 (117) |
49.0 (185) |
67.9 (257) |
79.8 (302) |
93.1 (352) |
98H-30 |
|
