Pressure Vacuum
2008
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 US GAUGE PRESSURE VACUUM GAUGE 30 0 30 HG PSI BOOST HOT ROD BOILER 1 4 NPT $18.95 Time Remaining: 8d 17h 41m Buy It Now for only: $18.95 |
 DATAMetrics Pressure Tester BaroCel Vacuum Sensors Transducers Test System Set $199.99 Time Remaining: 9h 32m |
 01 015 MPa Pressure Vacuum Gauge for 055 NPT Pipe $9.35 Time Remaining: 25d 9h 1m Buy It Now for only: $9.35 |
 4 1009 Compound Vacuum Pressure Gauge 15 IMV Vac 15 PSI 25 Inch 316 Steel $29.95 Time Remaining: 25d 11h 2m Buy It Now for only: $29.95 |
 Ashcroft Air Gas Vacuum VAC Pressure Gauge 1 8th NPT 2 $9.95 Time Remaining: 29d 19h 35m Buy It Now for only: $9.95 |
 NEW BARKSDALE 96210 BB3 S0025 PRESSURE VACUUM SWITCH NIB $49.99 Time Remaining: 18d 6h 13m Buy It Now for only: $49.99 |
 Ashcroft 25W1005 Compound Vacuum Gas Pressure Gauge VAC $9.95 Time Remaining: 27d 15h 24m Buy It Now for only: $9.95 |
 Ashcroft Vacuum Pressure Gauge 25W 1005 15 PSI 30 IMV $10.95 Time Remaining: 27d 15h 28m Buy It Now for only: $10.95 |
 01 0 MPa 055 NPT Round Dial Vacuum Pressure Gauge $10.26 Time Remaining: 21d 15h 38m Buy It Now for only: $10.26 |
 NEW MARSH BELLOFRAM H1212 VACUUM PRESSURE GUAGE 1 4NPT 30HG X 30PSI $24.95 Time Remaining: 8d 14h 15m Buy It Now for only: $24.95 |
 IMO PRESSURE OR VACUUM ACTUATED SWITCH D1T A3SS NEW OUT OF BOX $35.00 Time Remaining: 28d 6h 45m Buy It Now for only: $35.00 |
 BARKSDALE PRESSURE OR VACUUM ACTUATED SWITCH D1T A150SS NEW OUT OF BOX $70.00 Time Remaining: 28d 6h 45m Buy It Now for only: $70.00 |
 01 0 MPa 055 NPT Round Dial Vacuum Pressure Gauge $9.09 Time Remaining: 21d 11h 8m Buy It Now for only: $9.09 |
 0 Ashcroft 1009 Low Pressure Gauge 1 4 NPT Ammonia Vacuum Gauge 30 IMV 150 PSI $29.95 Time Remaining: 25d 10h 4m Buy It Now for only: $29.95 |
 01 15 MPa 055 NPT Pneumatic Vacuum Pressure Gauge $9.06 Time Remaining: 15d 2h 24m Buy It Now for only: $9.06 |
 BARKSDALE Pressure or Vacuum Switch E1S M15 br $20.00 Time Remaining: 15d 4h 13m Buy It Now for only: $20.00 |
 SMC ZSE2 T1 15 Vacuum Switch 101kPa 760mmHg Max Pressure $14.95 Time Remaining: 27d 7h 19m Buy It Now for only: $14.95 |
 PRESSURE CONTROLS LCD 2 VACUUM PRESSURE SENSOR $24.99 Time Remaining: 28d 9h 27m Buy It Now for only: $24.99 |
 Bourdon Haenni 60psi 4 316 Stainless Steel Vacuum Pressure Gauge $29.99 Time Remaining: 22d 18h 19m Buy It Now for only: $29.99 |
 45 IN Process Pressure Liquid Gauge Vacuum 30 0 30 $45.95 Time Remaining: 27d 15h 28m Buy It Now for only: $45.95 |
 Trerice 600C 45 0 15 psi 30 Hg vacuum low pressure gauge 52 2246 $12.50 Time Remaining: 5d 17h Buy It Now for only: $12.50 |
 9 Ashcroft 1009 Low Pressure Gauge 1 4 NPT Pump Industrial Vacuum Gauge 30 IMV $29.95 Time Remaining: 25d 10h Buy It Now for only: $29.95 |
 Liquid Filled Pressure Vacuum Gauges G251601PSS $39.99 Time Remaining: 8d 10h 14m Buy It Now for only: $39.99 |
 Air Negative Vacuum Pressure Sensor Switch PSAN V01CV Rc1 8 NPN open 100kPa $75.00 Time Remaining: 18d 5h 47m Buy It Now for only: $75.00 |
 Allen Bradley Vacuum Pressure Switch 21A1AH030BGV $100.00 Time Remaining: 20d 23h 26m Buy It Now for only: $100.00 |
 New box opened Ashcroft liquid filled vacuum pressure gauge 351009SWL 2C897 $54.99 Time Remaining: 18d 13h 52m Buy It Now for only: $54.99 |
 BARKSDALE Pressure or Vacuum Switch Model E1S M15 PLS $29.95 Time Remaining: 13d 10h 17m Buy It Now for only: $29.95 |
 01 24 MPa Round Dial Pressure Vacuum Compound Gauge $9.25 Time Remaining: 19d 16h 38m Buy It Now for only: $9.25 |
 Marsh Instrument Vintage Vacuum Pressure Gauge 30 60 $16.50 Time Remaining: 4d 8h 45m Buy It Now for only: $16.50 |
 BARKSDALE D2T H2SS PRESSURE OR VACUUM ACTUATED SWITCH NEW $35.00 Time Remaining: 3d 10h 19m Buy It Now for only: $35.00 |
 Weksler BA13 35 Face Compound Vacuum Pressure Gauge 30 Vacuum 15PSIG NOS $6.00 Time Remaining: 7d 9h 3m Buy It Now for only: $6.00 |
 Vintage Ashcroft Back of Seal Vacuum Pressure Gauge $15.00 Time Remaining: 22d 9h 17m Buy It Now for only: $15.00 |
 UE Precision Sensors PV48W 53 Vacuum Pressure Switch 7mmHgVAC $68.99 Time Remaining: 18d 20h 44m Buy It Now for only: $68.99 |
 055 NPT 01 24 MPa Pneumatic Pressure Vacuum Gauge $9.51 Time Remaining: 23d 10h 19m Buy It Now for only: $9.51 |
 marsh pg 73 vacuum pressure gauge $1.00 (1 Bid) Time Remaining: 14h 56m |
 VACUUM GENERAL PRESSURE TRANSDUCER CMO 01 RANGE 0 01 $129.99 Time Remaining: 22d 8h 22m Buy It Now for only: $129.99 |
 MKS Type 250B Gas Inlet Automatic Vacuum Pressure Flow Controller Module $224.99 Time Remaining: 26d 20h 39m Buy It Now for only: $224.99 |
 C6 Ashcroft 1009 Pressure Gauge 1 2 NPT Process 2 BAR Vacuum VAC Compound low $29.95 Time Remaining: 2d 18h 44m Buy It Now for only: $29.95 |
 Round Dial 01 05 MPa Air Pressure Vacuum Gauge Tool $9.32 Time Remaining: 26d 8h 10m Buy It Now for only: $9.32 |
 5 Each Wika 0 30 inHg Vacuum 0 30 PSI Pressure Gauges $62.95 Time Remaining: 20d 14h 18m Buy It Now for only: $62.95 |
 10 SMC 60PSi 100PSi 150PSi 30inHG Air Pressure Vacuum Gauge w Limit Indicator $38.99 Time Remaining: 5d 19h 55m Buy It Now for only: $38.99 |
 PROTECTOSEAL PRESSURE VACUUM BREATHER VENT M17802D2 $499.99 Time Remaining: 5h 56m Buy It Now for only: $499.99 |
 UE Precision Sensors P17W 311 Vacuum Pressure Switch 28VDC 40psig $34.99 Time Remaining: 14d 12h Buy It Now for only: $34.99 |
 C7 Ashcroft 1009 low Pressure Gauge 1 2 NPT Process 1 BAR Vacuum VAC pump tank $29.95 Time Remaining: 2d 18h 49m Buy It Now for only: $29.95 |
 FESTO VAM 63 V1 9 R1 4 EN SERIES AN VACUUM PRESSURE GAUGE 1 TO 9 PSI NEW $18.99 Time Remaining: 11d 5h 39m Buy It Now for only: $18.99 |
 8 Ashcroft 1009 Low Pressure Gauge 1 4 NPT Pump Industrial Vacuum Gauge 30 IMV $29.95 Time Remaining: 25d 9h 54m Buy It Now for only: $29.95 |
 Sunx DPX 200 Digital Vacuum Pressure Sensor 21016402116 $51.99 Time Remaining: 28d 12h 38m Buy It Now for only: $51.99 |
 AMETEK PRESSURE GAUGES VACUUM V500 1 4LM $31.31 Time Remaining: 28d 10h 2m Buy It Now for only: $31.31 |
 WEKSLER 30 0 IN HG VACUUM PRESSURE GAUGE ROYAL SERIES 1 4NPT BOTTOM CONN 55523 $39.99 Time Remaining: 29d 5h 12m Buy It Now for only: $39.99 |
 MKS INSTRUMENTS 245 GRANVILLE PHILLIPS 216 SS SERVO VALVE VACUUM PRESSURE $100.00 Time Remaining: 4d 5h 42m Buy It Now for only: $100.00 |
 SMC 72 psi digital pressure vacuum switch r170 $80.19 Time Remaining: 1d 6h 29m Buy It Now for only: $80.19 |
 SMC Compact Pressure Vacuum Switch ZSE2 0X 15 $21.88 Time Remaining: 15d 11h 7m Buy It Now for only: $21.88 |
 055 NPT 01 24 MPa Pneumatic Pressure Vacuum Gauge $10.58 Time Remaining: 20d 3h 14m Buy It Now for only: $10.58 |
 055 NPT 01 24 MPa Pneumatic Pressure Vacuum Gauge $10.88 Time Remaining: 22d 19h 17m Buy It Now for only: $10.88 |
 Ashcroft 2 Inch 1 8 NPT 30 IMV Vacuum Pressure Gauge $12.95 Time Remaining: 2d 19h 20m Buy It Now for only: $12.95 |
 PROTECTOSEAL PRESSURE VACUUM BREATHER VENT M17802D3 2 $499.99 Time Remaining: 6h 37m Buy It Now for only: $499.99 |
 Cole Parmer Pressure Vacuum Systems with 304 SS Pirani sensor 1 to 2000 mtorr $199.99 Time Remaining: 7d 10h 34m Buy It Now for only: $199.99 |
 Round Dial 01 05 MPa Air Pressure Vacuum Gauge Tool $10.52 Time Remaining: 25d 18h 2m Buy It Now for only: $10.52 |
 01 015 MPa Pressure Vacuum Gauge for 055 NPT Pipe $10.13 Time Remaining: 2d 18h 6m Buy It Now for only: $10.13 |
 Marshall Town Vacuum Pressure Gauge 7100 2291 002 $12.99 Time Remaining: 11d 6h 38m Buy It Now for only: $12.99 |
 2 NEW Wasco SP129 81W3A X 9698 Pressure Switches AMAT 1270 00715 Vacuum SP120 $51.99 Time Remaining: 17d 12h 12m Buy It Now for only: $51.99 |
 NEW USG 30 0 HG VACUUM PRESSURE GAUGE AMETEX $28.00 Time Remaining: 16d 6h 59m Buy It Now for only: $28.00 |
 055 NPT 01 24 MPa Pneumatic Pressure Vacuum Gauge $10.39 Time Remaining: 23d 14h 59m Buy It Now for only: $10.39 |
 Jas P Marsh Compound Vacuum Pressure Gauge $15.00 Time Remaining: 22d 9h 21m Buy It Now for only: $15.00 |
 Round Dial 01 05 MPa Air Pressure Vacuum Gauge Tool $10.13 Time Remaining: 22d 21h 23m Buy It Now for only: $10.13 |
 30 INHG Vacuum 160 PSI KGCM2 Pressure Gauge Compound $29.95 Time Remaining: 16d 17h 46m Buy It Now for only: $29.95 |
 055 NPT 01 24 MPa Pneumatic Pressure Vacuum Gauge $10.38 Time Remaining: 21d 13m Buy It Now for only: $10.38 |
 marsh pg 73 vacuum pressure gauge $1.00 (1 Bid) Time Remaining: 14h 56m |
 New SMC ZSE1 00 14CL Compact Vacuum Electronic Pressure Switch $29.74 Time Remaining: 11d 12h 45m Buy It Now for only: $29.74 |
 FESTO SDE1 V1 G2 W18 L P1 M12 Pressure Vacuum Sensor $29.00 Time Remaining: 22d 9h 46m Buy It Now for only: $29.00 |
 PIAB 3116057 VACUUM PRESSURE SWITCH 24V $16.99 Time Remaining: 17d 12h 23m Buy It Now for only: $16.99 |
 01 0 MPa 055 NPT Round Dial Vacuum Pressure Gauge $9.39 Time Remaining: 9h 40m Buy It Now for only: $9.39 |
 01 09 MPa Round Metal Dial Air Pressure Vacuum Gauge $9.35 Time Remaining: 26d 10h 42m Buy It Now for only: $9.35 |
 Ashcroft Gas Vacuum 6 IN Pump Pressure Gauge 30 IMV $95.95 Time Remaining: 29d 19h 35m Buy It Now for only: $95.95 |
 IMO Barksdale D2H H18SS Pressure or Vacuum Actuated Switch 125 250 480 VAC $40.00 Time Remaining: 11d 9h 18m Buy It Now for only: $40.00 |
 3 Dial Vacuum Pressure Gauge 30 0Hg Vacuum 0 300 Psi $16.95 Time Remaining: 4d 15h 17m Buy It Now for only: $16.95 |
 LOT 11 VACUUM PRESSURE SWITCH SOLENOID VALVE HONEYWELL $124.99 Time Remaining: 14h 16m Buy It Now for only: $124.99 |
 SMC PSE51 PSE511 R06 DIGITAL PRESSURE VACUUM SENSOR $72.95 Time Remaining: 22d 10h 15m Buy It Now for only: $72.95 |
 055 Male Thread 01 0 MPa Vacuum Pressure Gauge $9.39 Time Remaining: 10d 5h 57m Buy It Now for only: $9.39 |
 055 NPT 01 09 MPa Pneumatic Pressure Vacuum Gauge $10.27 Time Remaining: 9d 18h 5m Buy It Now for only: $10.27 |
 QTY2 UE Precision Sensors E36W H184 Vacuum Absolute Pressure Switch 75 Torr $50.00 Time Remaining: 18d 9h 47m Buy It Now for only: $50.00 |
 6 PCS CAJON VACUUM PRESSURE VALVES 5 6 RB 4 ADPT 3 8 $19.00 Time Remaining: 19d 13h 26m Buy It Now for only: $19.00 |
 Barksdale Pressure or Vacuum Actuated Switch D2T H18 $59.50 Time Remaining: 24d 16h 5m Buy It Now for only: $59.50 |
 ANDERSON EM931010041121A PRESSURE VACUUM INDICATOR $89.99 Time Remaining: 4d 3h 43m Buy It Now for only: $89.99 |
 BARKSDALE PRESSURE OR VACUUM ACTUATED SWITCH D2T H18SS NEW IN BOX $115.00 Time Remaining: 16d 3h 34m Buy It Now for only: $115.00 |
 Matheson 63 2216V Semiconductor Gas Indicating Vacuum Pressure Gauge $49.99 Time Remaining: 7d 8h 6m Buy It Now for only: $49.99 |
 Vacuum General 80 6A Pressure Gauge Digital Display for MKS Baratron Transducer $100.00 Time Remaining: 20d 13h 53m Buy It Now for only: $100.00 |
 01 015 MPa Pressure Vacuum Gauge for 055 NPT Pipe $10.26 Time Remaining: 6d 13h 3m Buy It Now for only: $10.26 |
 01 24 MPa Round Dial Pressure Vacuum Compound Gauge $13.22 Time Remaining: 17d 14h 2m Buy It Now for only: $13.22 |
 01 24 MPa Round Dial Pressure Vacuum Compound Gauge $10.58 Time Remaining: 25d 12h 21m Buy It Now for only: $10.58 |
 Edwards Model 503 TORR Vacuum Pressure Controller TORR D39913000 W $79.99 Time Remaining: 12d 14h 17m Buy It Now for only: $79.99 |
 01 015 MPa Round Dial Compound Pressure Vacuum Gauge $10.27 Time Remaining: 8d 18h 8m Buy It Now for only: $10.27 |
 Wika Pressure Transmitter Vacuum Compund 30 InHG100 PSI $195.00 Time Remaining: 27d 15h 24m Buy It Now for only: $195.00 |
 01 0 MPa 055 NPT Round Dial Vacuum Pressure Gauge $10.31 Time Remaining: 14d 11h 7m Buy It Now for only: $10.31 |
 01 015 MPa Pressure Vacuum Gauge for 055 NPT Pipe $10.55 Time Remaining: 24d 18h 27m Buy It Now for only: $10.55 |
 CONDEC UVC1000 VACUUM GENERATOR PRESSURE CONTROLLER USED $500.00 Time Remaining: 24d 6h 23m Buy It Now for only: $500.00 |
 Festo Type PEN M5 Pressure Differential Press or Vacuum Switch NEW $57.50 Time Remaining: 13d 12h 23m Buy It Now for only: $57.50 |
 Leybold Vakuum Thermovac Total Pressure Vacuum Gauge TM21 89683 $521.93 Time Remaining: 22d 10h 48m Buy It Now for only: $521.93 |
 Edwards model 503 Vacuum Pressure Controller mbar $49.00 Time Remaining: 14d 7h 27m Buy It Now for only: $49.00 |
 UE Precision Sensors PV48W 56 Vacuum Pressure Switch 20mm Hg VAC 5A 125 250VAC $58.49 Time Remaining: 22d 59m Buy It Now for only: $58.49 |
Pressure Vacuum
Throttle Pressure and Throttle Response
From a technical point of view, throttle response can be measured by how fast your engine can build vacuum in its intake manifold, via throttle pressure. The faster and higher peak vacuum is reached in the intake manifold, the higher the pressure differential will be between outside air, and your engine. This pressure differential forces the air to flow from the area of high pressure (outside air) to the area of low pressure (the engine and cylinders), and the higher the pressure difference, the greater the pressure force, and the faster the air flow into the engine.
This is essentially how throttle response works. To improve throttle response several engine alterations can be used to achieve a higher peak vacuum in the engine or a faster change in vacuum per throttle input... some of these include:
1- Using undersized intake pipes and intake plenum runners to increase the airflow velocity in the intake system, making the engine able to suck all the air out of it faster and create vacuum sooner.
2- Adjusting intake cam timing to open the intake valve as peak vacuum is created inside the cylinder near bottom dead center.
3- Reducing the overall intake system volume, by using smaller manifolds, less vacuum lines, and more electrically operated (rather than vacuum operated) engine auxiliaries which means the engine has less air volume to clear from the intake system to create a vacuum in the manifold to force new air in.
4- Using cam separation and cam overlap (when both intake and exhaust valves are open at the same time) to have the previous cycle's exhaust gasses help pull in fresh intake gasses for the beginning of this combustion cycle.
One interesting application of this concept is the G-Power supercharger kit for the BMW M3. The ASA supercharger powered kit focuses on response and efficiency rather than on astonishing peak power figures. The G-Power kit utilizes a very conservative boost supercharger by ASA giving a peak of only 4.4 psi of boost. Since the engine already very highly powered at 420hp, the addition of just 4.4psi of boost results in well over 500hp (as a conservative estimate) and as much as 560hp as a result of this combination.
The focus of the G-Power kit is not just power figures, as rather than just providing a supercharger kit for the M3, G-Power has designed a completely new intake manifold for the M3. The manifold although has higher volume than the original M3 manifold (for more peak power as this is now a supercharged car), does have a narrow profile that promotes high air velocities to improve throttle response. Furthermore, the new manifold has integrated individual runners for each cylinders complete with trumpet style inlets raised from the floor of the plenum, which has been proven through fluid flow simulation to reduce boundary pressure differentials, reduce the pressure drop inside the intake manifold, and promote higher air velocities that lend themselves to higher peak vacuums and faster vacuum buildup inside the manifold.
Even though centrifugal superchargers typically show a linear boost curve with engine rpm, and thus produce little to now power gain in lower rpms, the combination of this supercharger with the redesigned intake manifold and new tune reportedly provides over 20% increase in torque at ALL engine rpms, and with increased response.
Here it is in G-Power's own words:
Air duct: Sport air filter system, CAD-FEM flow optimized boost recooling system consisting of an air duct made from aluminum cast, high capacity air-to-air intercooler made from aluminum cast in the car's front and a large volume air box made from aluminum cast, including 8 integral resonance induction pipes made from light polyamide, ensuring an optimal throttle response and a perfect torque curve; pneumatic controlled, engine load related boost control; boost level approx. 4 psi rel.
The G-Power kit comes in 3 power ranges corresponding to 4, 6 and 7psi of boost. The 7psi kit with their full titanium exhaust is capable of peaking out over 580 hp with great response to match. Last but not least, the new G-Powered M3 is capable of doing a 0-124 mph 2 seconds faster than a factory M3, which at those speeds is about 20 car lengths of distance between the two cars. Moreover the G-Power with its unlimited speedometer will keep pulling all the way up to 223mph!
About the Author
I am a master electrical engineer who has been Interested in cars and performance modifications for the last 13 years. I have moderated one import performance website for 3 years. I have turbocharged one car, highly modified a twin turbo monster, and have a lot of gained 'experience' on my friend's cars. My current vehicle is a 2005 Mercedes C200 Kompressor which is supercharged and modified.
Find out more about supercharger performance by visiting:
My blog: http://www.superchargerperformance.com
How do i use a vacuum pressure gauge on a '94 toyota landcruiser?
I'm trying to test the compression of my engine but the manual I have doesn't mention it how to do this at all. Please leave detailed instructions; in understandable terms.
First off you're going to need two people and you don't use a vacuum gauge. You use a compression tester, which is a pressure gauge with a bullet shaped rubber tip that is designed to fit into the spark plug hole and seal when you push down on it. You remove ALL the spark plugs. Insert the tip of the compression tester in one spark plug hole at a time and have your partner hold the throttle wide open while they crank the engine through several revolutions. Record the reading then release the pressure and move to the next hole. Once you have the readings from all the cylinders there should be no more than 10% variation from the lowest to the highest reading.
Wilkins 720A 3/4" Pressure Vacuum Breaker - Sprinkler Daddy
