Valves for GASES

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.

Steel version

ModelAvailable connectionsSetting rangeSpecs
SLK Type A1/4″- 1/2″ NPT/GASda 0,5 a 650 bar
Details…
SLK Type B1/2″ – 1″ NPT/GASda 0,5 a 650 bar
Details…
SLK Type C1/2″ – 3/4″ – 1″ NPT/GASda 0,5 a 380 bar
Details…
SLK Type I1/4″ – 1/2″ NPT/GASda 0,5 a 650 bar
Details…

Applications

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

Materials

  • AISI 316L
  • Carbon steel

Design

Construction
Carried exhaust and free discharge
Seat sealing type
PTFE, PEEK, Metal to Metal, Viton, Nbr, Kalrez, EPDM
Connections
Screwed and flanged (ANSI / DIN)
Connections types
NPT, GAS/BSPP
Flange ratings
ASME 150 ÷ 2500 / PN16 ÷ PN 400
Sizes
1/2” ÷ 2” / DN 15 ÷ DN 50
Orifices
6, 8, 10, 14, 20, 25, 30, 38 mm
Characteristic
Full lift
Overpressure
10%
Blowdown
15%
Discharge coeff. Kd
0.94
Temperature range
-196°C +350°C
Set pressure range
0.5 ÷ 690 barg (steel version)
0.5 ÷ 50 barg (Brass version)
Design standard
EN 4126-1

Certifications

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

Brass version

ModelAvailable connectionsSetting RangeSpecs
SLK Type E3/8″ – 1/2″ NPT/GASda 0,5 a 45 bar
Details…
SLK Type F1/2″ – 3/4″ NPT/GASda 0,5 a 160 bar
Details…
SLK Type H1/4″ – 2″ NPT/GASda 0,5 a 50 bar
Details…

Applications

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

Materials

  • Brass
  • Bronze

Design

Construction
Carried exhaust and free discharge
Seat sealing type
PTFE, PEEK, Metal to Metal, Viton, Nbr, Kalrez, EPDM
Connections
Screwed and flanged (ANSI / DIN)
Connections types
NPT, GAS/BSPP
Flange ratings
ASME 150 ÷ 2500 / PN16 ÷ PN 400
Sizes
1/2” ÷ 2” / DN 15 ÷ DN 50
Orifices
6, 8, 10, 14, 20, 25, 30, 38 mm
Characteristic
Full lift
Overpressure
10%
Blowdown
15%
Discharge coeff. Kd
0.94
Temperature range
-196°C +350°C
Set pressure range
0.5 ÷ 690 barg (steel version)
0.5 ÷ 50 barg (Brass version)
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