Cla-Val 50B-4KG1/2050B-4KG1 Technical Manual - Manual (Page 17)

PO Box 1325 Newport Beach CA 92659-0325 Phone: 949-722-4800
Fax: 949-548-5441 Web Site: cla-val.com E-mail: [email protected]
CLA-VAL
CLA-VAL CANADA CLA-VAL EUROPE
4687 Christie Drive
Beamsville, Ontario
Canada L0R 1B4
Phone: 905-563-4963
Fax: 905-563-4040
E-Mail: [email protected] Chemin des M ésanges 1
CH-1032 Romanel/
Lausanne, Switzerland
Phone: 41-21-643-15-55
Fax: 41-21-643-15-50
E-Mail: [email protected]
Copyright CLA-VAL 2014 Printed in USA Specifications subject to change without notice.
CLA-VAL UK
Dainton House, Goods Station Road
GB - Tunbridge Wells
Kent TN1 2 DH England
Phone: 44-1892-514-400
Fax: 44-1892-543-423
E-Mail: [email protected]
©
Represented By:
Specifications: Seawater Service Option
Sizes Globe: 2" - 8" flanged
Angle: 2" - 8" flanged
Consult factory for flange ratings.
See page 1 for seawater service materials options.
E-50B-4KG1/2050B-4KGL1 (R-04/2014)
Model 2050B-4KG1 Angle Model 50B-4KG1 Globe
We recommend providing adequate space around valve for maintenance work.
Specifications
Globe: 2" - 10” flanged
Angle: 2" - 10" flanged
150 and 300 ANSI B16.42
class - 175 psi Max.
class - 300 psi Max
Water, to 180°F Max.
Main Valve Body & Cover
Ductile Iron ASTM A536 Grade 65-45-12
Standard Main Valve Trim:
Bronze Seat, Teflon Coated
Stainless Steel Stem, Dura-Kleen Stem
Standard Pilot Control System:
Cast Bronze with
Stainless Steel trim
Available in the following relief
pressure ranges:
20-200 psi (150 Class)
100-300 psi (300 Class)
Protective epoxy resin coating
of wetted surfaces of main
valve cast iron components
(UL listed HNFX EX2855)
Dimensions
B
G
C
F
H E
C
D
A
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-operat-
ed, pilot-controlled, diaphragm-type, globe or angle valve. It shall have
a single, removable, teflon-coated seat, a grooved stem guided at both
ends, and a resilient disc with a rectangular cross section, being con-
tained on 3 1/2 sides. No external packing glands shall be permitted and
the diaphragm shall not be used as a seating surface. 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. This valve shall be UL Listed and Factory Mutual
approved. It shall be the Model 50B-4KG1 (globe) or Model 2050B-
4KG1 (angle) Pressure Relief Valve as manufactured by Cla-Val Newport
Beach, California.
*Special Note:
The Model 50B-4KG1 Pressure Relief Valve is available with 300# ANSI
inlet flange and 150# ANSI outlet flange. This valve is used on higher
pressure systems where 300# flange connections are required, and
allows for adapting of a discharge cone (generally supplied with 150#
flange) to accommodate "atmospheric break" at relief valve discharge.
This relief valve, with 300# / 150# flanges is available on special order,
and is UNDERWRITERS LABORATORIES LISTED AND FACTORY
MUTUAL APPROVED.
Purchase Specifications
Sizes
End Details
Pressure Ratings
Standard Materials
Adjustment Range
Optional
Valve Capacity
Valve Sizes in Inches: 2" 2 1/2" 3" 4" 6" 8" 10"
NFPA 20 Maximum
Recommended GPM 208 300 500 1000 2500 5000 11000
= U.L., F.M. and
ULC sizes
Valve Size (inches) 2” 2-1/2” 3” 4” 6” 8” 10”
Threaded Ends 9.38 11.00 12.50 - - - - - - - - - - - -
A 150 Flanged 9.38 11.00 12.00 15.00 20.00 25.38 29.75
300 Flanged 10.00 11.62 13.25 15.62 21.00 26.38 31.12
300 X 150 12.88 15.31 20.56 25.88 30.44
B 3.31 4.00 4.56 5.75 7.88 10.00 11.81
C 12.00 12.25 12.50 13.00 14.31 16.31 18.00
D 1.50 1.69 2.66 3.19 4.31 5.31 9.25
Threaded Ends 4.75 5.50 6.25 - - - - - - - - - - - -
E 150 Flanged 4.75 5.50 6.00 7.50 10.00 12.75 14.88
300 Flanged 5.00 5.88 6.38 7.88 10.50 13.25 15.56
Threaded Ends 3.25 4.00 4.50 - - - - - - - - - - - -
F 150 Flanged 3.25 4.00 4.00 5.00 6.00 8.00 8.62
300 Flanged 3.50 4.31 4.38 5.31 6.50 8.50 9.31
G & H 6.00 6.69 7.75 7.88 8.50 9.75 13.25
Valve Size
(mm)
50 65 80 100 150 200 250
Threaded Ends 238 279 318 - - - - - - - - - - - -
A 150 Flanged 234 279 305 381 508 645 756
300 Flanged 254 295 337 397 533 670 790
300 X 150 - - - - - - 327 389 522 657 773
B 84 102 116 146 200 254 300
C 305 311 1318 330 363 414 457
D 38 43 65 81 109 135 235
Threaded Ends 121 140 159 - - - - - - - - - - - -
E 150 Flanged 121 140 152 191 254 324 378
300 Flanged 127 149 162 200 267 337 395
Threaded Ends 83 102 114 - - - - - - - - - - - -
F 150 Flanged 83 102 102 127 152 203 219
300 Flanged 89 109 111 135 165 216 236
G & H 152 170 197 200 216 248 337
= ULC sizes only