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
Description

CRV

Vacuum Isolation Valve, Bellows Sealed, Corrosion & Ozone Resistant

Specifications

  • Type
    Corrosion & Ozone Resistant Bellows-sealed Isolation Valve
  • Vacuum Range
    Atmosphere to 1.0 x 10-9 Torr
  • Port Size
    NW40, NW50
  • Helium Leak Rate
    1.0 x 10-9 std cc/sec
  • Cylinder Volume
    2.2 - 6.4 in3, depending on configuration
  • Cylinder Air Pressure
    90 psig ±30 psig
  • Limit Switch Rating
    5A - 250 VAC
  • Single Pole, Single Throw
    5A - 30 VDC
  • Electrical Duty Cycle
    100 volts 72%
    120 volts 50%
  • Blow-By Pressure
    NW40: 50 psia
    NW50: 45 psia
  • Actuation Time
    NW40: 270 msec opening, 530 msec closing
    NW50: 450 msec opening, 1130 msec closing
  • Heater Nominal Set Point
    170°C (338°F)
  • Heater Interior Range
    135°-180°C (275°-356°F)
  • Heater Materials
    Molded silicone foam, fiberglass reinforced silicone, Teflon insulated wire
  • Heater Exterior Range
    60°-70°C (140°-158°F)
  • Heater Foam Thickness
    0.5 mm
  • Heater Compliance
    CE, UL E52951 2JR
  • Heater Connectors
    Midget Twist-Lock, nylon, NEMA ML-1
  • Heater Weight Range
    0.5 to 1.5 lbs.
  • Power Cord Current
    12 A maximum
  • LTA Monitor Enclosure
    Black plastic
  • LTA Power Requirements
    90-130 VAC input, 12 VDC ±3 VDC output
  • LTA Power Consumption
    0.3 W
  • LTA Relay Contact Rating
    SPDT, 2 A @ 50 VAC resistive, 1 A @ 30 VDC
  • LTA Input/Output Wiring
    Thermal switch line IN
    Thermal switch line OUT
    Normally closed
    Common
    Normally open
  • LTA Dimensions
    2.58 x 4.76 x 1.46 inches
  • LTA Compliance
    CE
  • Typical Life
    1,000,000 cycles
  • Weight
    3.5 - 6.4 pounds, depending on configuration

Features

TIG Fusion Welded vacuum Grade Body

Valve Cut View Showing Shield

Another standard feature is a TIG fusion welded vacuum grade body made of highly, corrosion resistant, 304 stainless steel, creating fewer entrapment areas, resulting in less contamination buildup. The Corrosion Resistant Valve is available in angle and inline configurations. Port sizes include NW 40 and NW 50 using maximum internal diameters for greater conductance. For leak tight operation, elastomer seals are available in Viton® for typical vacuum operating conditions, or Kalrez®, Chemraz®, Perlast® or Gumlast® for higher temperature conditions and increased chemical resistance.

Applications

Application Schematic

The Corrosion and Ozone Resistant Valve is designed to provide long life in extremely harsh semiconductor or solar processes. This is achieved by shielding the thin wall bellows, limiting bellows exposure to corrosive or reactive gases. Typical processes that require a corrosion resistant valve are CVD and Etch. These processes use gases such as fluorine, chlorine, bromide or ozone. An aluminum shield is recommended for fluorine or ozone while a stainless shield should be used when chlorine or bromide are used. This valve can also be used in exhaust line applications to avoid corrosion of the valve bellows.

Accessories

Replacement Solenoids

Compare Description Drawings, CAD & Specs Avail. Price
100008163
$179
100008164
$221
100008166
$153
100008167
$189
100008539
$111
100008165
$233

Valve Seals

Compare Description Drawings, CAD & Specs Avail. Price
100016174
$24.15
100016175
$735
100016177
$557
100016176
$856

Other Accessories

Compare Description Drawings, CAD & Specs Avail. Price
100016170
$725
100016171
$756
100016173
$814
100016172
$830

Resources

Application Notes

Literature