Gas Valve Sizing - Honeywell V5055A Manual

V5055A-F INDUSTRIAL GAS VALVES
Replacement Parts:
Replacement Seal Assembly: Includes valve seal, bonnet
seal, and tube of lubricant.
133393A: for 3/4, 1, 1-1/4, and 1-1/2 in. valves
133392A: for 2, 2-1/2, and 3 in. valves.
137253A: for 4 in. valves.
Replacement Bonnet Assembly: Includes complete bonnet
assembly, plus the required replacement seal assembly.
See Table 3.
Table 3. Replacement Bonnet Assemblies.
Valve Model Valve Size (in.)
V5055A 3/4, 1, 1-1/4,
(On-Off) 1-1/2
2, 2-1/2, 3
4
V5055B 3/4, 1, 1-1/4,
(Characterized 1-1/2
guide)
2, 2-1/2, 3
4
V5055C 3/4, 1, 1-1/4,
(Valve-closed 1-1/2
indicator)
2, 2-1/2, 3
4
V5055D 3/4, 1, 1-1/4,
(High pressure 1-1/2
On-Off)
2, 2-1/2, 3
V5055E (Valve 3/4, 1, 1-1/4, 1-1/2 136308BA
Closed Indicator)
2, 2-1/2, 3
Approvals:
The following combinations of V5055 Valves (3/4 through
4 in.) and V4055, V4062 and V9055 Fluid Power Actuators
are approved by these agencies:
Underwriters Laboratories Inc. Listed: (File No. MH1639,
Guide No. YIOZ):
V4055A,B,D,E/V5055A,B,C,D,E,F
V4062/V5055A,B,C,E,F
V9055/V5055A,B,C,E,F
Industrial Risk Insurers (Formerly F.L.A.) Acceptable:
V4055A,B,D,E/V5055A,B,C,D,E,F
V4062/V5055A,B,C,E,F
V9055/V5055A,B,C,E,F
Factory Mutual Approved (Report No. ID92A.AF).
CSA File No. 158158-1205788:
V4055A/V5055A,B
V4055B/V5055D
V4055D/V5055C
NOTE: CSA does not certify models equipped with
BSP threads.
British Gas Corporation and Dutch Gas Institute Approved:
60-2307—15
Replacement
Bonnet Assembly
133398AA
133417AA
136911AA
133398BA
133417BA
136911BA
137398CA
133417CA
136911CA
136308AA
136307AA
136307BA
V4055E/V5055E
V4062/V5055B,C
V9055/V5055B,C
V4055 or V4062 with V5055A1145, A1152, A1160,
A1178, B1168, B1184, B1192, B1200, B1218.
Australian Gas Association Approved:
V5055B1267, B1275, and B1291.
DIN-DVGW Approved (Germany):
V5055A1145, A1152, A1160, A1178, B1168, B1184,
B1192, B1200, and B1218.

GAS VALVE SIZING

1. Check the burner nameplate for (a) the type of gas
used, and (b) the gas flow capacity. The capacity will
be listed in Btu/h (Btus per hour) or in cf/h (cubic foot
per hour).
2. Call the gas utility for information on (a) the specific
gravity (sp gr) and (b) Btu per cubic foot (Btu/cu ft) for
type of gas used.
3. Find the capacity in cf/h. If the capacity is listed in
Btu/h, convert to cfh by the following formula:
Capacity in cf/h = :Btu/h (from burner nameplate)
4. For gases with specific gravities other than 0.64,
multiply the burner cfh by the proper conversion factor.
See Table 4.
Table 4. Gas Conversion Factors.
Type of Gas
Manufactured
Mixed
Propane
Butane
5. Use the corrected burner capacity in cf/h when
determining the gas valve size in Fig. 1.
6. Determine the maximum pressure drop across the valve
and draw a horizontal line at this pressure in Fig. 1.
7. Draw a vertical line in Fig. 1 at the capacity (cf/h)
previously determined. Use the corrected capacity for
a gas with a specific gravity other than 0.64.
8. Use the valve size at the intersection of the horizontal
and vertical lines. If the intersection is between valve
sizes, use the next higher size to the right.
TO SIZE TWO IDENTICAL VALVES
PIPED IN SERIES
1. Find the cf/h for the type of gas used.
2. Consider both valves as one unit. Determine the total
maximum pressure drop across the unit.
3. Find the pressure drop across the first valve by
assuming it to be 45 percent of the total pressure drop.
4. Find the valve size from Fig. 1.
5. The second valve will be the same size as the first
valve.
4
Btu/cu ft (from gas utility)
sp gr (average) Multiply cf/h by:
0.60 0.968
0.70 1.046
1.53 1.546
1.98 1.759