Issue link: https://onenorgren.uberflip.com/i/1463811
272 ACC E S S O R I E S 8 For more information or for additional configurations, please contact us at NASInsideSales@imi-precision.com SWITCHES /SENSORS Pneumatic Vacuum Switch Switch Operation: The pneumatic switch is a diaphragm-actuated air valve. At vacuum levels below the switch set point, the diaphragm depresses the valve plunger, closing the valve. When the vacuum level reaches the set point, the diaphragm releases the plunger, opening the valve, and allowing air to flow from port 1 to port 2. To change the set point, turn either the adjustment knob or slotted screw. SETPOINT K 'L' MAX. TRAVEL M 'C' OUTLET PORT 2X Ø 'D' MOUNTING HOLES E J N P R 'A' AIR SUPPLY PORT S T U 'V' PANEL MOUNT THREADS SET-POINT ADJUSTMENT - SLOTTED SCREW WITH JAM NUT NVSP-NC-NAK NORMALLY CLOSED NO ADJUSTMENT KNOB FOR PANEL MOUNTING: REMOVE CAP TO ACCESS THE 4MM HEX NUT. LOOSEN HEX NUT AND PULL KNOB OFF. M 'L' MAX. TRAVEL 'B' VACUUM PORT 2 1 2 1 NVSP-NC SETPOINT VACUUM LEVEL TIME 0 EVACUATION TIME 0 HYSTERESIS 3-4"Hg LEAK RATE ANSI Symbol: 1 3 2 3 1 2 How to Specify: Normally Closed: P/N: NVSP-NC To order with slotted screw adjustment use P/N: NVSP-NC-NAK Part Number Dimensions Weight oz (g) A in. (mm) B in. (mm) C in. (mm) D in. (mm) E in. (mm) J in. (mm) K in. (mm) L in. (mm) M in. (mm) N in. (mm) P in. (mm) R in. (mm) S in. (mm) T in. (mm) U in. (mm) V in. (mm) NVSP-NC 5/32 * PTC 10-32 5/32* PTC 0.12 (3.0) 0.75 (19.1) 1.51 (38.4) 2.01 (51.0) 2.47 (62.7) 0.78 (19.8) 0.25 (6.4) 0.36 (9.1) 1.13 (28.7) 0.36 (9.1) 0.77 (19.6) 0.40 (9.5) 4-40 (N/A) 2.6 oz (74g) NVSP-NC-NAK 5/32* PTC 10-32 5/32* PTC 0.12 (3.0) 0.75 (19.1) 1.51 (38.4) 2.01 (51.0) 1.68 (42.7) 0.22 (5.6) 0.25 (6.4) 0.36 (9.1) 1.13 (28.7) 0.36 (9.1) 0.77 (19.6) 0.40 (9.5) 4-40 (N/A) 2.6 oz (74g) *PTC–Push-to-Connect–accepts 5/32 (4 mm) tubing Rated Vacuum Range: 0" to 25" Hg (0 to 847 mbar) Hysteresis: 3" to 4" Hg (102 mbar to -135 mbar) Port Sizes: Vacuum – 10-32 Female Valve Type: Plunger operated – air assisted servo controlled element Operating Pressure: 20-115 PSI Flow Rate: 2.5 SCFM @ 100 PSI Cv Rating: 0.06 Response Time: 64 ms Ambient Temp: 14ºF to 140ºF [-10C to 60C] Mechanical Life: 10 million operations Pneumatic Vacuum Switch Specifications: