VTLA
Metal diaphragm shut off valve for using in industrial gas supply systems - VTLA - LOW FLOW RANGE
Two port metal diaphragm shut off valve used in supply systems for industrial, inert, flammable, oxidizing gases and gas mixtures. Not usable for corrosive or toxic gases and gas mixtures.
SPECIAL FEATURES
- Quick operation through 90° shut-off function
- Handwheel indicates open/closed position (red/green)
- Metal diaphragm valve
- Compact design
- Designed and approved in accordance with relevant sections of EN ISO 10297
- O2 - ignitation test regarding EN ISO 10297 for main shut off valve
- Electrostatic chargeability test
- fulfill requirements according DIN EN ISO 80070-36; IEC TS 60079-32-1 and German TRGS 727
- usable in EX-areas zones 1 and 2 for gases with explosion risk group l; llA; llB; llC
TECHNICAL DATA
| Working temperature: | -20°C to +60°C |
| Inlet/outlet ports: | NPT 1/4" female |
| Max. working pressure: | 300 bar |
| Kv-value: | 0,25 |
| Seat diameter: | 5 mm |
| Leakage rate seat: | less than 6 cm3/h (20°C; 1,013 bar absolut) Compressed Air |
| Leakage rate outside: | less than 6 cm3/h (20°C; 1,013 bar absolut) Compressed Air |
| Filter inlet: | 100 µm mesh |
| Filter outlet ports: | 100 µm mesh |
| Mounting holes: | M6 |
| Weight: | 0,30 kg |
| Material gas wetted parts: | |
| Valve body: | BRASS (2.0401.26) |
| Valve diaphragm: | 1 × Hastelloy (2.4819), 1 × Elgiloy (2.4711) |
| Valve seat: | PCTFE |
| Valve popet: | BRASS (2.0401.126) |
| Tests in production: |
Pressure test with dry air (ISO 8573 [1:2:2]) of each item Seat leakage test with dry air (ISO 8573 [1:2:2]) of each item Test of functionality of each item |
| Approvals during development: |
Type test accordance with relevant sections of EN ISO 10297 O2 ignition test regarding EN ISO 10297 for main shut off valve Electrostatic chargeability test
- usable in EX-areas zones 1 and 2 for gases with explosion risk group l; llA; llB; IIC |
VTLA.pdf 
