Valves for liquids

Relief Valves GLV-Series are spring loaded pressure relieving devices, suitable for discharge of incompressible fluids. GLV-series relief 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 Steel or plastic versions.

Version in stainless steel

ModelAvailable connectionsSetting rangeSpecs
GLV Type A1/2″-3/4″ NPT/GAS | DN15 – DN20 ASME/DINda 0,5 a 690 bar
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GLV Type B1/2″ – 3/4″ – 1″ NPT/GAS | DN15 – DN25 ASME/DINda 0,5 a 690 bar
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GLV Type C1″ – 1 1/2″ NPT/GAS | DN25 – DN40 ASME/DINda 0,5 a 415 bar
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GLV Type D1 1/2″ – 2″ NPT/GAS | DN40 – DN50 ASME/DINda 0,5 a 220 bar
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GLV Type F1/4″ – 1/2″ NPT/GASda 0,5 a 790 bar
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Applicazioni

  • Chemical plants
  • Petrochemical plants
  • Dosing systems
  • Injections skids
  • Metering pumps
  • Water treatment and desalination plants
  • Cryogenic plants (liquefied gases)

Materiali

  • AISI 316L
  • Inconel
  • Alloy 20
  • Hastelloy
  • Titanium
  • Duplex
  • Super duplex
  • Monel

other exotic materials are available

Design

Construction
Angle-type
Seat sealing type
PTFE, PEEK, Metal to Metal, Viton, 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 mm
Characteristic
Full lift
Overpressure
10%
Blowdown
15%
Discharge coeff. Kd
0.7
Temperature range
-196°C +350°C
Set pressure range
0.5 ÷ 800 barg
Design standard
EN 4126-1

Certificazioni

  • CE marking according to 97/23/CE (PED)
  • ATEX 94/9/CE

Version in plastic

ModelAvailable connectionsSetting rangeSpecs
GLV Tipo A1/2″-3/4″ GAS | DN15 – DN20 ASME/DINda 0,5 a 12 bar
Vai…
GLV Tipo B1/2″ – 3/4″ – 1″ GAS | DN15 – DN25 ASME/DINda 0,5 a 12 bar
Vai…
GLV Tipo C1 1/2″ GAS/BSPP | DN40 ASME/DINda 0,5 a 12 bar
Vai…
GLV Tipo D1 1/2″ – 2″ GAS/BSPP | DN40 – DN50 ASME/DINda 0,5 a 9 bar
Vai…

Applications

  • Chemical plants
  • Petrochemical plants
  • Dosing systems
  • Injections skids
  • Metering pumps
  • Water treatment and desalination plants

Materials

  • PVC
  • PVC-C
  • PP
  • PVDF
  • PTFE

Design

Construction
Angle-type
Seat sealing type
PTFE
Connections
Screwed and flanged (ANSI / DIN)
Connections types
GAS/BSPP
Flange ratings
ASME 150 ÷ 300 / PN16 ÷ PN 40
Sizes
1/2” ÷ 2” / DN 15 ÷ DN 50
Orifices
10, 14, 20, 25, 30 mm
Characteristic
Full lift
Overpressure
10%
Blowdown
15%
Discharge coeff. Kd
0.7
Temperature range
-20°C +180°C
Set pressure range
0.5 ÷ 12 barg
Design standard
EN 4126-1

Certifications

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

Version in brass

ModelloConnessioni disponibiliCampo di taraturaScheda
GLV Tipo E3/8″ – 1/2″ NPT/GASda 0,5 a 40 bar
Vai…

Applicazioni

Materiali

Design

Certificazioni

Valves for gases

Valves for liquids

SLKC-10IA

Valves for cryogenics

PSV SCARICO LIBERO PER GAS IN OTTONE

Free exhaust valves

Certifications

ATEX COI