Cla-Val 50B-4KG1KOL/2050B-4KG1KOL User Manual
Pressure relief valve with anti-cavitation trim, Model, Typical applications
Onshore Fire Pump Relief
Pressure Relief Valve with Anti-Cavitation Trim
50B-4KG1KOL Globe
2050B-4KG1KOL Angle
• For Onshore and Offshore Applications
• KOL Anti-Cavitation Trim Seat:
- Protects Against Cavitation
- Reduces Noise and Vibration
- Extends Valve Life
• Compliant with NFPA 20 Standards
The Cla-Val Globe Pattern Model 50B-4KG1KOL and Angle
Pattern Model 2050B-4KG1KOL relief valve is designed to
relieve excess pressure in a fire protection system, while
eliminating the damaging effects of cavitation.
The valve features an adjustable pressure setting, fast opening
to maintain steady line pressure, and gradual closing for surge
free operation.
Offshore Platform Pump Relief
2050B-4KG1KOL (Angle)
L
ABL
LED BY
U
N
D
E
R
W
R
IT
E
R
S L
ABORATOR
IE
S
O
F
C
A
N
A
D
A
U
L
C
MODEL
KOL Anti-Cavitation Seat Features & Benefits
• Ideal for applications with high
pressure differentials
• Meets flow requirements set forth by
applicable approval agencies
• Provides a safer work environment by
preventing valve damage
• Teflon-Coated Seat available in 316
Stainless Steel, Monel and Super
Duplex Stainless Steel
Optional UL Listed Materials for Seawater and
Severe Service Applications:
• Nickel Aluminum Bronze (NAB) - ASTM B148 Alloy C95800
• Monel - QQ-N-288 Comp B - ASTM A494 Grade M30H
• Cast Steel - ASTM A216 Grade WCB
• 316 Stainless Steel - ASTM A743 Grades CF3M and CFM8
• Super Austenitic Stainless Steel - ASTM A351 Grade
CK3MCuN (SMO 254)
• Super Duplex Stainless Steel - ASTM A890 Grade 5A
(CE3MN)
Sizes 3" thru 8"
Sizes 3" thru 8"
FLOW
33A
High Performance
Combination Air Release
& Vacuum Breaker Valve
581
Check Valve
Blow-Off
Tee and
Valve
Main
Gate
Valve
Shut-Off
System
2050B-4KG1KOL
Pressure Relief Valve with
Anti-Cavitation Trim
WC-1
Waste Cone
Typical Applications