Specifications | Pressure-Reducing Regulator
SPECIFICATIONS
Diaphragm Cover and Case: Aluminum Body: Cast Iron Seat: SST Shaft : SST Balancing Diaphragm:
Maximum Inlet Pressure: 5 psi
Maximum Ambient Temperature: 180°F (Standard) 350°F (7349A-V) Minimum Ambient Temperature:
-20°F (standard and -V)
BUNA/Nylon (Standard) FKM/Polyester (7349A-V)
Gas Diaphragm:
BUNA/Nylon (Standard) FKM/Nomex (7349A-V)
ORDERING INSTRUCTIONS
-
7349A - -
Product Number
Y = yellow spring (1-4 osi range) A = aluminum spring (3-8 osi range) G = green spring (7-16 osi range) R = red spring (14-24 osi range)
7349A
Pipe Code
" Blank" Standard S = downstream sensing connection V = (FKM) diaphragms and O-rings SV = downstream sensing connection and (FKM)diaphragms and O-rings K = no brass internals (Obsolete) RK = repair kit * VRK = repair kit (V series) * UK = Upgrade kit for -5, -6, -7 * VUK = (FKM) upgrade kit for -5, -6, -7 *
Example, specify: 7349A-4-SVY for a 2" regulator with external impulse tap, Viton diaphragms, and 1 to 4 osi outlet range.
The "Standard" regulator comes with no brass internals, and can be used in place of the obsolete -K model. * For repair and upgrade kits see Sheet 7216/7218/7219A/7349A .
Figure 5. Installation of 7349A- -S with External Impulse Tap
INSTALLATION
External Impulse
Regulator designation
Impulse Pipe Tap Impulse
15 D Recommended to Ratio Regulator to avoid hunting (pulsating) due to interaction between regulators. 3 D Minimum to next Fitting. Weld ¼ " half coupling to top or side of pipe. Drill ¼ " hole through pipe wall. Remove burrs from inside.
Position
Size
Tube Size
7349A-0-S, -1-S, -2-S, -3-S, -4-S
C B
1⁄8 ¼
¼ 3⁄8
7349A-5-S, -6-S, -7-S
Position B
10 D Minimum
*
Position C
7349A- -S
D Pipe Size
Reducing Coupling (not bushing)
Items shown dotted are not by Fives.
* Never locate the remote tap downstream of another regulator or control valve.
Bulletin 7349A Page 4
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