Free exhaust safety valves

Safety Valves SLK-Series are spring loaded pressure relieving devices, suitable for discharge of compressible fluids.
SLK-series safety valves are used to protect personnel and equipment by preventing excessive pressure accumulation.

Coi Technology offers a large range of screwed and flanged valves in a variety of sizes, materials and options.
The valves are of a full nozzle type and available in Brass or steel versions.

ModelAvailable connectionsSetting rangeSpecs
SLK Type F1/2″ – 3/4″ NPT/GASda 0,5 a 160 bar
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SLK Type H1/4″ – 2″ NPT/GASda 0,5 a 50 bar
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Applications

  • Air Compressors
  • Steam generators / Boilers
  • Autoclaves
  • Technical gases
  • Natural gas and technical gas compressors

Materials

  • Brass
  • AISI 316L

Design

Construction
Free discharge
Seat sealing type
PTFE, PEEK, Metal to Metal
Connections
Screwed
Connections types
NPT, GAS/BSPP
Sizes
1/2” ÷ 2”
Orifices
8, 10, 14, 18, 25, 30, 38 mm
Characteristic
Full lift
Overpressure
10%
Blowdown
15%
Discharge coeff. Kd
0.937
Temperature range
-196°C +250°C
Set pressure range
0.5 ÷ 160 barg
Design standard
EN 4126-1

Certifications

  • CE marking according to 97/23/CE (PED)

Valves for gases

Valves for liquids

SLKC-10IA

Valves for cryogenics

PSV SCARICO LIBERO PER GAS IN OTTONE

Free exhaust valves

Certifications

ATEX COI