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.
| Model | Available connections | Setting range | Specs |
|---|---|---|---|
| GLV Type A | 1/2″-3/4″ NPT/GAS | DN15 – DN20 ASME/DIN | da 0,5 a 690 bar | |
| GLV Type B | 1/2″ – 3/4″ – 1″ NPT/GAS | DN15 – DN25 ASME/DIN | da 0,5 a 690 bar | |
| GLV Type C | 1″ – 1 1/2″ NPT/GAS | DN25 – DN40 ASME/DIN | da 0,5 a 415 bar | |
| GLV Type D | 1 1/2″ – 2″ NPT/GAS | DN40 – DN50 ASME/DIN | da 0,5 a 220 bar | |
| GLV Type F | 1/4″ – 1/2″ NPT/GAS | da 0,5 a 790 bar |
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 PED/2014/68/EU
- ATEX 2014/34/EU
| Model | Available connections | Setting range | Specs |
|---|---|---|---|
| GLV Tipo A | 1/2″-3/4″ GAS | DN15 – DN20 ASME/DIN | da 0,5 a 12 bar | |
| GLV Tipo B | 1/2″ – 3/4″ – 1″ GAS | DN15 – DN25 ASME/DIN | da 0,5 a 12 bar | |
| GLV Tipo C | 1 1/2″ GAS/BSPP | DN40 ASME/DIN | da 0,5 a 12 bar | |
| GLV Tipo D | 1 1/2″ – 2″ GAS/BSPP | DN40 – DN50 ASME/DIN | da 0,5 a 9 bar |
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 PED/2014/68/EU
- ATEX 2014/34/EU
| Modello | Connessioni disponibili | Campo di taratura | Scheda |
|---|---|---|---|
| GLV Tipo E | 3/8″ – 1/2″ NPT/GAS | da 0,5 a 40 bar |
Applicazioni
Materiali
Design
Certificazioni
- CE PED/2014/68/EU
- ATEX 2014/34/EU
Valves for gases
Valves for liquids
Valves for cryogenics
Free exhaust valves
