TYPE C34
MAIN VALVE
TYPE C34 MAIN VALVE
APPLICA TION DATA
●Pressure Regulating for Liquid Distribution
●Regulating for Process Control (Temperature or Pressure)
●Maintain Back Pressure or Differential Pressure
●For use with Self-contained, Pneumatic or Electronic Pilots
●Single Point or Multiple Use Applications
●Slow Start-up or Shutdown
VALVE RATINGS
Valve Ends Pressure Temperature
ASME/ANSI PSIG (bar) °F (°C)
CAST IRON
B16.4 Class 250 NPT 200 (13.8) @ 200 (93)
B16.1 Class 125 Flanged 165 (11.4) @ 200 (93)
B16.1 Class 250 Flanged 200 (13.8) @ 200 (93)
Canadian Registration # OC 0591.9C
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TYPE C34 MAIN VALVE
BALANCED SINGLE SEAT
LIQUID SERVICE
SIZES 1" – 6"
PRESSURES to 200 PSIG at 200°F
●Normally Closed
●Single Seat
●Hycar Diaphragm
●Balanced Composition Disc
●Protected Main Spring
●Balanced Piston Design without Dashpot
●Fluid Applications
●Accurate Regulation for Non-violent Load
Fluctuations
●ANSI/FCI 70-2 Class VI Shutoff
●Virtually Frictionless for Long Service Life
●Packless Construction
●Wide Variety of Pilots for Many
Applications
O
PTIONS
●EZ Connections
T
YPICAL CONFIGURATIONS
P
RESSURE REDUCING …………T
YPE C34D
A
IR ADJUSTED …………………T
YPE C34A
B
ACK PRESSURE ………………T
YPE C34Q
P
UMP GOVERNOR ……………T
YPE C34P
L
OAD ALLOCATING ……………TYPE C34FD
A
IR CONTROLLED ……………TYPE C34AP60
E
LECTRONIC SLOW START ……TYPE C34D208D
S
OLENOID CONTROLLED ………TYPE C34MD
S
OLENOID ACTUATED …………TYPE C34M
D
IFFERENTIAL …………………TYPE C34N
C
OOLING CONTROL ……………TYPE C34T
REGULATOR SIZE
111/4 11/2 221/2 3456
5.5 12.5 17.3 24 36 53 86 139 196
RATED FLOW COEFFICIENTS (Cv)
SIZING INFO
PAGE 108
Installation Tip: Add EZ Connections for ease of maintenance
SEE PAGE 42
See page 42
DIMENSIONS inches (mm) AND WEIGHTS pounds (kg)
FACE TO FACE OTHER DIMENSIONS
A APPROX. WT.
SIZE ANSI ANSI ANSI B C D E F G ANSI ANSI ANSI
NPT 125 250 NPT 125 250
15
3
/8 ——6
7
/8 3 3/8 71
3
/8 6 10 3/8 19 — —
(25) (137) — — (175) (86) (178) (35) (152) (264) (9) — —
11/4 61/2 ——6
7
/8 3 7/8 71 13/16 6 5/8 11 1/4 24 — —
(32) (165) — — (175) (98) (178) (46) (168) (286) (11) — —
11/2 71/4 ——6
7
/8 4 1/4 71 15/16 6 3/8 11 7/8 29 — —
(38) (184) — — (175) (108) (178) (49) (162) (302) (13) — —
27
1
/2 81/2 99
1
/8 4 1/2 72 1/16 6 1/2 12 1/2 46 51 60
(51) (191) (216) (229) (232) (114) (178) (52) (165) (318) (21) (13) (27)
21/2 —93/8 10 9 1/8 5 1/2 7 3/8 2 3/8 6 7/8 14 1/2 —6574
(64) — (238) (254) (232) (140) (187) (60) (175) (368) — (30) (34)
3 — 10 103/4 11 1/8 68
3
/4 2 3/4 7 1/4 15 7/8 — 94 111
(76) — (254) (273) (283) (152) (222) (70) (184) (403) — (43) (50)
4—11
7
/8 121/2 13 1/2 6 5/8 9 3/8 37 3/4 17 3/4 — 148 172
(102) — (302) (318) (343) (168) (238) (76) (197) (451) — (67) (78)
5—13
5
/8 141/2 13 1/2 7 5/8 10 7/8 3 1/2 8 5/8 20 1/4 — 194 226
(127) — (346) (368) (343) (194) (276) (89) (219) (514) — (88) (103)
6—15
1
/8 16 13 1/2 9 1/8 13 1/8 4 1/4 10 5/8 25 1/8 — 280 325
(152) — (384) (406) (343) (232) (333) (108) (270) (638) — (127) (148)
TYPE C34 MAIN VALVE
TYPE C34 MAIN VALVE
SPECIFICATION
The valve shall be self-operated, external pilot type, single
seated, diaphragm actuated, normally closed design. The valve
will shut tight on dead end service and shall maintain a discharge
pressure which will not vary more than 10% (2 psi minimum) of
set point from zero flow to rated flow regardless of inlet pressure
variation. Valve shall be suitable for 200°F (93°C) service temperature. Bodies shall be cast iron. Sizes 2-1/2" and larger shall have
flanged ends. T rim shall be stainless steel. V alves shall be equipped
with a reversible composition disc. Diaphragms and discs shall
be hycar. There shall be no springs in the fluid space and no
stuffing box.
MATERIALS OF CONSTRUCTION
Body, Cast Iron …………………………ASTM A126 Cl. B
Stem ……………………………303 St. Stl. ASTM A582
Disc …………………………………………Hycar Comp
Seat 1 - 2" ………………………303 St. Stl. ASTM A582
Seat 21/2 - 6"" …………304 St. Stl. ASTM A276 Cond A
Gasket ………………………………………Non-asbestos
Diaphragm ……………………………………………Hycar
Spring …………………………………………………Steel
C
B
D
F
E
A
FITTINGS ON
PAGE 46
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TYPE C34
MAIN VALVE
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