1. Internal geometry studied to reduce pressure drop.
Fluid dynamic of internal of valve studied to maximize flow capacity.
2. Pneumatic actuator integrated in the valve.
Space saving compared to an automated valve.
3. Piston with chemical nickel plating (20-25 micron).
Lower wear of the seals due to the increase of the surface hardness (400 -550 HV).
4. Lip seals.
Less wear of the seal compared to an o-ring.
5. Lip seal leakage check holes.
These holes show eventual leakage from lip seal, preventing the intercepted fluid from damaging the air supply system.
6. Seat support disc.
316L S.S. disc for best chemical compatibility.
Several seal materials available.
Maximum compatibility with different types of fluids depending on the seals used (EPDM, NBR, FKM).
Integrated slot for valve position sensor.
Position sensor can be easily mounted in both sides of the valve to minimize space.
No external moving parts.
No risk of injury due to moving parts.
Long life time guaranteed.
Lifetime up to 10 times longer than a ball valve with reduced maintenance costs.
100% in- house manufacturing process technology.
Maximum control and accuracy in all the stages of the manufacturing process.
Less Air consumption.
70% less air consumption compared to an actuated valve with SR pneumatic actuator therefore less load on the compressor or the possibility of using a smaller sized compressor.
Installation is allowed in a potential explosive environment.
Full compliance with European Safety Standards for Pressure Equipment.
Up to SIL 3 certified.
Guarantee of high level of functional safety.
GENERAL FEATURES: • Both Double Acting and Spring Return VIP valves (either Normally Open or Normally Closed) are available in sizes ranging from 3/8” to 2”. • Unidirectional flow. • P MAX 40 bar (580 psi) in indicated direction. • GAS threaded ends as per EN 10226-1 Rp (Ex ISO 7/1) - DIN 2999 ; NPT. • Threaded connections for air supply system (NAMUR adapter plate on request). • Improved fluid dynamics allow minimum pressure losses. • VIP valves can be used in any mounting position (horizontal, vertical or angled). • Seat PTFE + GF. • Lips seals and o-ring: - NBR: suitable for air, gaseous fluids, oils, water etc. - FKM: perfectly suitable for most fluid. Unsuitable for steam. - EPDM: perfectly suitable for hot water and steam. Unsuitable for mineral products (oils, grease, etc.). • Media: liquids and gases of 1&2 group as long as they are compatible with seals and valve materials. • Possibility to check open / close valve position thanks to inductive limit switches (magnetic contact) available on request. Internal magnet needs to be requested at VIP EVO order phase. • According to 2014/68/EU “PED”. • 2014/34/EU ATEX configuration available upon request at time of order. • Vacuum tightness: leack rate <5·10-5 mbar·l/s (Value less than 2g of air at room temperature per year).
CONTROL MEDIA: • Filtered compressed air, not necessarily lubricated; according to UNI EN 15714-3: 2009. • In case of lubricated air, seal compatible oil must be used. • Air supply: - Double Acting: min. 3 bar (44 psi); max. 8,5 bar (123 psi). - Spring Return N.C.: min. 4 bar (58 psi); max. 8,5 bar (123 psi). - Spring Return N.O.: min. 4,5 bar (65 psi); max. 8,5 bar (123 psi).
OPERATING MEDIA: • Pressure: 40 bar (580 psi) max, see diagram. • Temperature: NBR: from -20°C to +80°C (from -4°F to 176°F); EPDM e FKM: from -20°C to +150°C (from -4°F to 302°F).
Spare parts are not available for VIP EVO for oxygen service.
PRESSURE / TEMPERATURE DIAGRAM
FLOW RATE / PRESSURE LOSS AND NOMINAL COEFFICIENT
The pneumatic coaxial valve "VIP EVO" is the evolution of the "VIP" valve. "VIP EVO" is an interception valve (between pipe IN-OUT) with built in control system (A-B). It works thanks to the internal movement of a piston supplied with air. At the end of its stroke (VIP EVO valve is an ON/OFF valve), the piston presses on the seat seal, stopping the fluid from flowing, or moves away from the seal, allowing the intercepted fluid to flow. As the seat is perfectly tight and the intercepted fluid pressures discharge on it, the pressure necessary to move the piston is little affected by the fluid pressure. As a result OMAL has been able to design a light space saving and lasting valve. Internal fluid-dynamics has been designed to reduce turbolence and pressure loss.
SPRING RETURN - SR N.C. The spring is in “A1”, if there is no control, the piston will touch the seat seal: therefore, the preferable position is the closed one.
SPRING RETURN - SR N.C. Supplying the hole “B” with air (the hole “A” must be discharging) at the end of its stroke the piston is at maximum distance from the seat seal: the valve is open.
SPRING RETURN - SR N.O. Supplying the hole “A” with air (the hole “B” must be discharging) the piston presses on the seat seal at the end of its stroke: the valve is closed.
SPRING RETURN - SR N.O. The spring is in “B1”, if there is no control, the piston will be away from the seat seal: therefore, the preferable position is the open one.
DOUBLE ACTING - DA Supplying the hole “A” with air (the hole “B” must be discharging) the piston presses on the seat seal: the valve is closed.
DOUBLE ACTING - DA Supplying the hole “B” with air (the hole “A” must be discharging) the piston is at maximum distance from the seat seal: the valve is open.
Limit switch magnet: on request at order phase. Double Acting DA versions: spring included for antistatic device.
NAMUR SOLENOID VALVE
Solenoid valve 5/2 as per NAMUR • This solenoid valve is designed for the selection of the functions 5/2 and 3/2, which is realized by using with the appropriate mounting plate. • Full-working input power - D.C.: 2,5 W. • Full-working input power - A.C.: 2 W. • Supply voltage tolerances: +/- 10%. • Coil insulation: F-class. • Protection with connector: IP65. • Electric connection: PG 9. • Pneumatic connections: inlet 1/4”; outlet 1/4” ISO 228. • Max. pressure: 10 bar (145 psi). • Operating media temperature: from -10°C to +80°C (from 14°F to 176°F). • Ambient temperature: from -10°C to +50°C (from 14°F to 122°F).
MICRO SOLENOID VALVE
Micro solenoid valve • This solenoid valve is connected by a joint which fits directly to the actuator air intake, without other fittings or fixing screws. • 3/2 solenoid valve, with solenoid available in the following voltages: 24-110-220V AC; 12-24V DC. • Starting input power - A.C.: 9 VA. • Full-working input power - D.C.: 5 W. • Full-working input power - A.C.: 6 VA. • Supply voltage tolerances: +/- 10%. • Copper wire insulation: H-class. • Coil insulation: F-class. • Protection with connector: IP65. • Electric connection: PG 9 any orientation acceptable 360°. • Pneumatic connections:1/8” ISO 228 any orientation acceptable 360°. • Max. pressure: 10 bar (145 psi). • Operating media temperature: from -10°C to +50°C (from 14°F to 122°F). • Ambient temperature: from -10°C to +50°C (from 14°F to 122°F). • Bore 1,3 mm (0,05 in).
VIP EVO can be provided with inductive limit switch (magnetic contact) and signal LED. Limit switches can be easily mounted in the integrated slots and fixed with a screw. Since the magnets are situated inside the valve, they must be mounted while assembling the VIP EVO and not afterwards. For this reason, in case needed, magnet must be requested at VIP EVO order phase.