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parker refrigeration Clark Johnson Co

Refrigerant Check and Isolation Valves

 

Safety Relief Valves- SRLQ

The SRLQ liquid relief valves are conventional, direct spring loaded safety relief valves designed to protect the liquid containing portions of vessels built to the ASME Boiler and Pressure Vessel Code.

  Product Overview

     Specification

The SRLQ liquid safety relief valve is a unique solution providing overpressure protection of vessels containing liquid. While traditional safety relief valves are designed for vapor use only the SRLQ is unique in that is it designed specifically for use with liquids. Safety relief valves are designed to relieve pressure in a vessel when the set pressure is exceeded, preventing potential damage to equipment and injury to personnel. After opening, these valves re-seat when the pressure in the vessel is below the valve’s closing pressure. The liquid safety relief valves (SRLQ) are designed and constructed to meet the requirements of Section VIII ASME Boiler and Pressure Vessel Code and ANSI/ASHRAE 15 code requirements and bear the ASME code symbol. Employing proven principles of design, these safety relief valves are highly reliable and dependable. Precision machined moving parts of stainless steel, and a PTFE disc prevent sticking due to corrosion or cold welding and assure valve opening at the set pressure long after installation.

 

Markets:

• Industrial Refrigeration

• Commercial Refrigeration

 

Features and Benefits:

• Suitable for ammonia and halocarbon refrigerants

• ASME Boiler and Pressure Vessel

• Code, Section VIII, Division 1 compliant

• ANSI/ASHRAE Standard 15 safety standard for refrigeration systems

• All stainless steel internal parts

• Non-stick PTFE seat

• Set pressure tolerance of ±3%

• Unaffected by vibration

• Excellent repeatability

 

Applications:

• Use with Ammonia and halocarbon refrigerants

• Liquid Lines

• ASME rated liquid transfer vessels

• Heat Exchangers

• Condensers

• Coolers

• Vessels containing lubricating oil such as an oil cooler

• NOT suitable for water or other corrosive fluids

 

MAXIMUM PRESSURE (BAR)

28 bar

 

MAXIMUM PRESSURE (PSIG)

400 psig

 

PRESSURE RELIEF SETTING (BAR)

3.5 bar to 6.9 bar

 

VALVE TYPE

SR1LQ, SR2LQ

 

PRESSURE RELIEF SETTING (PSI)

50 psi to 100 psi

 

FLOW RATE (LPM)

33.3 lpm to 78.0 lpm

 

SET PRESSURE TOLERANCE

±3% *Re-Seat pressure after release is 20% below set point

 

FLOW RATE (GPM)

8.8 gpm to 20.6 gpm

 

ORIFICE SIZE (MM)

5.81 mm

 

ORIFICE SIZE (INCH)

.229"

 

INLET CONNECTION

13 mm(1/2"), 20 mm(3/4")

 

OUTLET CONNECTION

20 mm(3/4"), 25 mm(1")

 

CONNECTION TYPE

FPT

 

MINIMUM AMBIENT TEMPERATURE (C)

-29°C

 

MINIMUM AMBIENT TEMPERATURE (F)

-20°F

 

MAXIMUM AMBIENT TEMPERATURE (C)

94°C

 

MAXIMUM AMBIENT TEMPERATURE (F)

200°F

SLRQ valve clark johnson co

Clark Johnson Company, Inc.       2016