CRV Corrosion Resistant Vacuum Isolation Valve
Overview
Corrosion resistant valves employ a patented technology to completely seal off the valve bellows while the valve is in the open processing position. A unique umbrella valve (vent valve) can be used to exhaust trapped gases if applicable. Manufactured using superior techniques and high-quality materials, the CRV Corrosion Resistant Vacuum Isolation Valve is extremely durable and dependable. It has a small profile, is light, low in cost and is easy to maintain.
- NW40 - NW50, custom sizes available
- Designed for use in harsh environments
- Shield keeps reactive and corrosive gases from contacting bellows
- Normally closed valve utilizes air to open and spring to close for safety
- High purity, 6061 aluminum, 304 and 316 stainless steel materials, to minimize corrosion
- Easily accommodated into existing systems, using industry standard dimensions
Products
Configuration Options
The following options are available for CRV Corrosion & Ozone Resistant Compact Vacuum Valves
Ordering Code Example: CRV-40-AK-AN-NVXXX
| Configuration Option | Option Code |
|---|---|
| CRV Vacuum Isolation Valve | CRV |
| Flange Size | |
| NW40 | 40 |
| NW50 | 50 |
| Body Configuration | |
| Angle | A |
| Inline | I |
| Flange Type | |
| ISO-KF | K |
| Shield Configuration | |
| Aluminum no vent | AN |
| Aluminum with vent | AV |
| Stainless Steel no vent | SN |
| Stainless Steel with vent | SV |
| Limit Switch | |
| Limit Switch | L |
| No Limit Switch | N |
| Seal Type | |
| Viton® | V |
| Kalrez® | K |
| Chemraz® | Z |
| Perlast® | P |
| Gumlast® | G |
| Heater | |
| No Heater | XXX |
| Angle Body Heater | R6A |
| In-line Body Heater | R6I |
| Angle Body LTA Heater | L6A |
| In-line Body LTA Heater | L6I |
| Solenoid | |
| 12 VDC | 12D |
| 24 VDC | 24D |
| 24 VAC 50/60 Hz | 24A |
| 120 VAC 50/60 Hz | 120 |
| 240 VAC 50/60 Hz | 240 |
| 1/8 inch NPT | None |
Specifications
-
TypeCorrosion & Ozone Resistant Bellows-sealed Isolation Valve
-
Vacuum RangeAtmosphere to 1.0 x 10-9 Torr
-
Port SizeNW40, NW50
-
Helium Leak Rate1.0 x 10-9 std cc/sec
-
Cylinder Volume2.2 - 6.4 in3, depending on configuration
-
Cylinder Air Pressure90 psig ±30 psig
-
Limit Switch Rating5A - 250 VAC
-
Single Pole, Single Throw5A - 30 VDC
-
Electrical Duty Cycle100 volts 72%
120 volts 50% -
Blow-By PressureNW40: 50 psia
NW50: 45 psia -
Actuation TimeNW40: 270 msec opening, 530 msec closing
NW50: 450 msec opening, 1130 msec closing -
Heater Nominal Set Point170°C (338°F)
-
Heater Interior Range135°-180°C (275°-356°F)
-
Heater MaterialsMolded silicone foam, fiberglass reinforced silicone, Teflon insulated wire
-
Heater Exterior Range60°-70°C (140°-158°F)
-
Heater Foam Thickness0.5 mm
-
Heater ComplianceCE, UL E52951 2JR
-
Heater ConnectorsMidget Twist-Lock, nylon, NEMA ML-1
-
Heater Weight Range0.5 to 1.5 lbs.
-
Power Cord Current12 A maximum
-
LTA Monitor EnclosureBlack plastic
-
LTA Power Requirements90-130 VAC input, 12 VDC ±3 VDC output
-
LTA Power Consumption0.3 W
-
LTA Relay Contact RatingSPDT, 2 A @ 50 VAC resistive, 1 A @ 30 VDC
-
LTA Input/Output WiringThermal switch line IN
Thermal switch line OUT
Normally closed
Common
Normally open -
LTA Dimensions2.58 x 4.76 x 1.46 inches
-
LTA ComplianceCE
-
Typical Life1,000,000 cycles
-
Weight3.5 - 6.4 pounds, depending on configuration
Features
Resources
Manuals
- CRV Vacuum Valve Manual (0, PDF)
Ultra-High Velocity