The Whitman Controls W117LV NEMA IV Rated Ultra Pure Stainless Steel Vacuum Switches have all welded stainless steel interiors which are Helium leak checked to pass 4 x 10-9 Std cc/sec. These are the weather-proof, liquid-resistant version of the W117V suitable for outside applications or in areas of condensing humidity. These switches are used in Silicon Wafer Ovens, Medical Applications and where any impurities are not tolerated. There are numerous fitting options available featuring the ¼” VCR Male. Unlike the W117G, the W117LV set point is factory set to customer specification and is non-adjustable. 

Key Features:

• High Purity
• NEMA 4 Rated
• Welded stainless steel body and interiors, helium leak checked 
• Weather-proof and liquid resistant
• Set point options: Factory set, field adjustable, or a combination
• Extensive operating temperature range
• Wide range of electrical interfaces available
• SPDT or SPST availability

Specifications:

• Set point range: 1.6 to 28.2 InHg
• Max System pressure: 0 PSIG
• Temperature range: -65°F to +225°F (-54°C to +107°C)
• Amps: 5 Amps Max
• Sensor Element: Electric beam welded, helium leak tested
• Weight: 3.0 oz (varies slightly with electrical interface selection)
• Cycling: 3H/5H - Not to exceed 60 CPM, 10H/25H/50H - Not to exceed 20 CPM
• Wetted Parts:
  Capsule: 17-7 pH, electron beam welded
  Fitting: 303 Stainless steel 
  Standard Thread: ⅛-27 NPT male, Optional Threads: 1/4 VCR Male, 1/4-18 NPT Male