Cla-Val 50-20 - Manual (Page 6)

OUTLET
A
AA
AAA
E
INLET
H
J
B (DIAMETER)
K
FF F
C
DDD
DD INLET
OUTLET
C
H
B (DIAMETER)
K
GG GGG G
D
J
The Fire Pump Pressure Relief Valve shall modulate to relieve excess pressure
in a fire protection system. It shall maintain constant pressure in the system
regardless of demand changes. It shall be pilot controlled and back pressure
shall not affect its set point. It shall be actuated by line pressure through a pilot
control system and open fast in order to maintain steady system pressure as
system demand decreases. It shall close gradually to control surges and shall
re-seat drip-tight within 5% of its pressure setting. The main valve shall be of
the hydraulically-operated, pilot-controlled, diaphragm-type, globe or angle
valve. It shall have a single, removable, teflon-coated seat. Internal and exter- nal epoxy coating, a stem guided at both ends, and a resilient disc with a rec-
tangular cross section, being contained on 3 1/2 sides. No external packing
glands shall be permitted and the diaphragm shall not be used as a seating sur-
face. The pilot control shall be a direct-acting, adjustable, spring-loaded,
diaphragm-type valve designed for modulating service to permit flow when
controlling pressure exceeds spring setting. It shall be the MODEL 50G-20
(globe) or Model 50A-20 (angle) Pressure Relief Valve as manufactured by
Cla-Val, Newport Beach, California.
Purchase Specifications
Dimensions
We recommend providing
adequate space around
valve for maintenance work.
Valve Size (Inches) 1 1 ⁄
2
2 2 1 ⁄
2
3 4 6 8 10 12 14 16 24 36
A Threaded 7.25 9.38 11.00 12.50 — — — — — — — — —
AA 150 ANSI 8.50* 9.38 11.00 12.00 15.00 20.00 25.38 29.75 34.00 39.00 41.38 61.50 76.00
AAA 300 ANSI 9.00* 10.00 11.62 13.25 15.62 21.00 26.38 31.12 35.50 40.50 43.50 63.24 78.00
B Dia. 5.62 6.62 8.00 9.12 11.50 15.75 20.00 23.62 28.00 32.75 35.50 53.16 66.00
C Max. 5.50 6.50 7.56 8.19 10.62 13.38 16.00 17.12 20.88 24.19 25.00 43.93 61.50
D Threaded 3.25 4.75 5.50 6.25 — — — — — — — — —
DD 150 ANSI 4.00* 4.75 5.50 6.00 7.50 10.00 12.75 14.88 17.00 19.50 20.81 — —
DDD 300 ANSI 4.25* 5.00 5.88 6.38 7.88 10.50 13.25 15.56 17.75 20.25 21.62 — —
E 1.12 1.50 1.69 2.56 3.19 4.31 5.31 9.25 10.75 12.62 15.50 17.75 24.56
F 150 ANSI 2.50 3.00 3.50 3.75 4.50 5.50 6.75 8.00 9.50 10.50 11.75 19.25 28.00
FF 300 ANSI 3.06 3.25 3.75 4.13 5.00 6.25 7.50 8.75 10.25 11.50 12.75 — —
G Threaded 1.88 3.25 4.00 4.50 — — — — — — — — —
GG 150 ANSI 4.00* 3.25 4.00 4.00 5.00 6.00 8.00 8.62 13.75 14.88 15.69 — —
GGG 300 ANSI 4.25* 3.50 4.31 4.38 5.31 6.50 8.50 9.31 14.50 15.62 16.50 — —
H NPT Body Tapping 3 ⁄
8
3 ⁄
8
1 ⁄
2
1 ⁄
2
3 ⁄
4
3 ⁄
4
1 1 1 1 1 1 2
J NPT Cover Center Plug 1 ⁄
4
1 ⁄
2
1 ⁄
2
1 ⁄
2
3 ⁄
4
3 ⁄
4
1 1 1 1 ⁄
4
1 1 ⁄
2
2 1 1 ⁄
2
2
K NPT Cover Tapping 3 ⁄
8
3 ⁄
8
1 ⁄
2
1 ⁄
2
3 ⁄
4
3 ⁄
4
1 1 1 1 1 1 2
Valve Stem Internal
Thread UNF
10-32 10-32 10-32 1 ⁄
4
-28 1 ⁄
4
-28 3 ⁄
8
-24 3 ⁄
8
-24 3 ⁄
8
-24 3 ⁄
8
-24 3 ⁄
8
-24 1 ⁄
2
-20 3 ⁄
4
-16 3 ⁄
4
-16
Stem Travel 0.4 0.6 0.7 0.8 1.1 1.7 2.3 2.8 3.4 4.0 4.5 6.75 10.12
Approx. Ship Wt. Lbs. 15 35 50 70 140 285 500 780 1165 1600 2265 6200 11470
X Pilot System 11.00 13.00 14.00 15.00 17.00 29.00 31.00 33.00 36.00 40.00 40.00 68.00 86.00
Y Pilot System 9.00 9.00 10.00 11.00 12.00 20.00 22.00 24.00 26.00 29.00 30.00 39.00 45.00
Z Pilot System 9.00 9.00 10.00 11.00 12.00 20.00 22.00 24.00 26.00 29.00 30.00 39.00 45.00
Valve Size (mm) 40 50 65 80 100 150 200 250 300 350 400 600 900
A Threaded 184 238 279 318 — — — — — — — — —
AA 150 ANSI 216* 238 279 305 381 508 645 756 864 991 1051 1562 1930
AAA 300 ANSI 229* 254 295 337 397 533 670 790 902 1029 1105 1606 1981
B Dia. 143 168 203 232 292 400 508 600 711 832 902 1350 1676
C Max. 140 165 192 208 270 340 406 435 530 614 635 1116 1562
CC Max. 104 127 — 165 223 281 — — — — — — —
D Threaded 83 121 140 159 — — — — — — — — —
DD 150 ANSI 102* 121 140 152 191 254 324 378 432 495 528 — —
DDD 300 ANSI 108* 127 149 162 200 267 337 395 451 514 549 — —
E 29 38 43 65 81 110 135 235 273 321 394 451 624
F 150 ANSI 64 76 89 95 114 140 171 203 241 267 298 489 711
FF 300 ANSI 78 83 95 105 127 159 191 222 260 292 324 — —
G Threaded 48 83 102 114 — — — — — — — — —
GG 150 ANSI 102* 83 102 102 127 152 203 219 349 378 399 — —
GGG 300 ANSI 102* 89 110 111 135 165 216 236 368 397 419 — —
H NPT Body Tapping 3 ⁄
8
3 ⁄
8
1 ⁄
2
1 ⁄
2
3 ⁄
4
3 ⁄
4
1 1 1 1 1 1 2
J NPT Cover Center Plug 1 ⁄
4
1 ⁄
2
1 ⁄
2
1 ⁄
2
3 ⁄
4
3 ⁄
4
1 1 1 1 ⁄
4
1 1 ⁄
2
2 1 1 ⁄
2
2
K NPT Cover Tapping 3 ⁄
8
3 ⁄
8
1 ⁄
2
1 ⁄
2
3 ⁄
4
3 ⁄
4
1 1 1 1 1 1 2
Valve Stem Internal
Thread UNF
10-32 10-32 10-32 1 ⁄
4
-28 1 ⁄
4
-28 3 ⁄
8
-24 3 ⁄
8
-24 3 ⁄
8
-24 3 ⁄
8
-24 3 ⁄
8
-24 1 ⁄
2
-20 3 ⁄
4
-16 3 ⁄
4
-16
Stem Travel 10 15 18 20 28 43 58 71 86 102 114 171 257
Approx. Ship Wt. Kgs. 7 16 23 32 64 129 227 354 528 726 1027 2812 5200
CLA-VAL
Copyright Cla-Val 2007 Printed in USA Specifications subject to change without notice.
P.O. Box 1325 • Newport Beach, CA 92659-0325 • Phone: 949-722-4800 • Fax: 949-548-5441 • E-mail: [email protected] • Website cla-val.com
© E-50-20 (R-5/07)
Valve Size (inches) 1 1/2 2 2 1/2 3 4 6 8 10 12 14 18 24 36
Max. Continuous GMP 125 208 300 460 800 1800 3100 4900 7000 8500 11000 25000 50000
Max Surge GPM 280 470 670 1000 1800 4000 7000 11000 16000 19000 25000 56500 85000
Valve Capacity