Further right, the cone shaped item is an example of a high-vacuum fitting that uses a set of flanges and a compressed sealing ring. When connecting vacuum fittings, we strongly recommend the use of PTFE tape on all fittings to ensure an airtight seal.
Price and other details may vary based on product size and color. Avoid the more flexible clear (Tygon type) PVC hose because it crushes easily and will choke itself off if bent around tight corners! Please do not copy without permission. I didnt buy it new (came with a used vacuum pump) and I dont suggest you buy a fully assembled version if you want to save money. They are cheap, and some types will work ok for a while. Routine maintenance such as pump-oil changes may be performed by lab workers. Designed to sit inside our 8mm ID silicone vacuum hose to make the hose crush proof, including for autoclave use. Vacuum pumps must be serviced by an authorized vendor on the schedule recommended by the pump manufacturer. The base is a piece of PVC (or metal, or something vacuum-tight) that is held on with tacky tape (yellow). Subscribers to our insider newsletter get exclusive savings on selected products and early access to FREE training content.
Guidance to Supervisors - Staff with COVID-19 Health Questions, Research Resumption: Lab PPE and Preventing COVID-19 Transmission in Penn Labs, Lab Cleaning and Disinfection COVID-19 Guidance, Reordering Information for COVID-19 Transmission Prevention Supplies, BSL-2 Enhanced Training for Processing COVID-19 Patient Specimens, Close Proximity Work Standard Operating Procedure, Eating and Use of Conference Rooms - Best Practices, Wastewater Monitoring: Spring 2021 Pilot Program - FAQ, Face Coverings, Masks and Respirators Compared, Mask and General PPE Guidance for Essential Penn Laboratory Personnel, Precautions for the Distribution of University Supplied Face Masks, Recommendations for cleaning labs with Suspected/Confirmed COVID-19 cases, EHRS COVID-19 Guidance for FRES and Housekeeping, EHRS COVID-19 Guidance for Security and Delivery Activities. So you place your vacuum fitting inside a secondary piece of 4 tube-bag that has strips of infusion flow media inside. Right there in the middle are two little silver-colored push-to-connect fittings for use with the plastic hoses. 
Measure before you order.
Home:Articles:Tools and Equipment: Vacuum Stuff. The last thing to look at here is a vacuum regulator. Infusion is all about vacuum as much as possible in many cases. When in doubt add some bag sealant tape!
Sponsored | Based on star rating and number of customer ratings, AUTOGEN 2-Stage Air Vacuum Pump 5CFM 3/4HP 0.3 Pa for HVAC/AUTO AC Refrigerant Recharging, Degassing Wine, Milking Cow, Food Processing, Orion Motor Tech AC Vacuum Pump and Gauge Set, with 4CFM Vacuum Pump, Leak Detector, 3 Hoses Quick Couplers, Puncture and Self-Sealing Can Taps, AC Vacuum Pump Kit for R134a R12 R22 R502 Refrigerant, Aupoko R12 R22 to R134a Adapters, R134A Refrigerant Tank/Vacuum Pump Port Connection Adapters - 1/4" Flare Female x 1/2" Male - Refrigeration Handling Charging Tool, Refrigerant Charging Hose with Ball Valve Apply to R134A R12 R22 R502 R404 Refrigerant Air Conditioning Manifold Gauge 1/4" Thread Hose Set 60" Red/Yellow/Blue (Pack of 3), Adjustable R134a Quick Coupler High Low Conversion Adapter Fittings + R134a Refrigerant Tank Adapter Kit for AC Air conditioning Refrigerant R134a HVAC Air Condition Gauge Manifold Hose Connector, R410A Adapter 5/16 inches SAE Female to 1/4 inches SAE Male Flare for Air Conditioners HVAC, 2 Straight Adapter + 2 Angled Adapter, Aupoko AC R134A Adapters Quick Couplers with Can Tap Valve Kit, Adjustable R134A Adapter Fittings Quick Coupler, R134A Can Tap Valve Refrigerant Dispenser with Tank Adapter and Valve Core Remover Kit, Orion Motor Tech 3.5cfm Vacuum Pump, 1 Stage HVAC Vacuum Pump for R12 R22 R134a R410a Systems, Small 1/4hp 38 Micron Vacuum Pump for Air Conditioner Servicing Resin Degassing and More, Oil Included, JIFETOR 6PCS Refrigerant and Vacuum Pump Adapters Kit, 1/4" AC Angled Compact Ball Valve, 1/4" Male Flare to 1/2" Female SAE and 1/2" Male Flare to 1/4" Female SAE Vacuum Pump Connectors, R1234YF Vacuum Pump Adapter, Refrigerant Tank to R12 Fitting Adapter, 1/2 Female to 1/4 SAE Male Flare Adapter, Fits for R1234yf to R12 Refrigerant System, JIFETOR 3 Way AC Manifold Gauge Set, HVAC Diagnostic Charging Tool for Auto Household R404A R134A Refrigerant, Quick Couplers Adapter Valve Core Tool (3FT Hose, Can Tap), 2 Pieces 6015 R134A Brass Refrigerant Tank Adapter to R12 Fitting Adapter 1/2 Female to 1/4 Male Flare Adaptor Valve Core and 6014 Vacuum Pump Adapter 1/4 Inch Flare Female to 1/2 Inch Male, Universal Vacuum Hose Adapter Kit Reducer Attachment Set Converter from 1 1/2 inch to 1 1/4 inch from 1 3/8 inch to 1 1/4 inch Dust Hose Port Adapter, Boltigen AC R134a Quick Coupler Adapter Fitting with R134A Self-Sealing and Puncture Style Can Tap Valves, Tank Adapters for AC System, Aupoko R1234yf Quick Couplers, High/Low Side R1234yf Manual Couplers Connector Adapters with 1/4" Male Port, Replacement for A/C Refrigerants Manifold Gauge Set, Aupoko R12 R22 to R134a Adapters, R134A Refrigerant Tank Adapter Kit with Valve Core Remover, 1/4" Male to 1/2" Female, 1/4 SAE Female X 1/2 Male Refrigerant Tank Adapters, R134A Refrigerant Tank Converter Adapter Vacuum Pump 1/4" SAE to 1/2" Female, R1234yf Adapter Kit, R1234yf Quick Couplers Set, High/Low Pressure Side R1234yf Manual Connector Kit, with Self-Sealing and Puncture Style R1234yf Can Tap, tank adapter and valve core remover, Joywayus Angled High Low R134a AC Quick Coupler Adapter Fitting Freon Manifold Gauge Hose Conversion Kit1/4" SAE HVAC, Orion Motor Tech AC Vacuum Pump and Gauge Set, 4.5 cfm HVAC Vacuum Pump and 4 Way AC Gauges for R134a R410a R22 Refrigerants, with Leak Detector, Puncture and Self-Sealing Can Taps Quick Couplers, Wisepick Quick Adapter Adjustable High and Low Side Connection R134a Quick Coupler Connection to R1234yf R134a to R1234yf Conversion Kit for AC Refrigerant, Camco Lead-Free Water Bandit, 3.25 Inches, Blue (22484), JIFETOR 3 Way AC Manifold Gauge Set, HVAC Diagnostic Charging Tool for Auto Household R404A R134A Refrigerant, with 5FT Hose, Adjustable Quick Coupler, Can Tap and Adapter, R1234YF To R134A Low Side Quick Coupler Adapter, R134a Adapter Car Air-conditioning Fitting Connector Refrigerant Can Compatible Valve Tool, R134a Refrigerant for Car Air-Conditioning AC Charging, VIVOHOME 110V 1/4 HP 3.5 CFM Single Stage Rotary Vane Air Vacuum Pump and R134a AC Manifold Gauge Set Kit for HVAC Air Conditioning Refrigeration Recharging ETL Listed, FANOVO R134A Can Tap Valve Piercing Type Refrigerant Dispenser Tool with 6015 Refrigerant Tank Adapter and 6014 Pump Adapter Valve Core Remover for Air Conditioner Manifold Freon Charging Hose, FJC 6018 R134a Coupler to R12 Hose Adapter 14mm x 1.5 x 1/4" Male Flare, AC to DC Converter 110V to 12V 5A 60W Car Cigarette Lighter Adapter - Wall Plug 120V to 12V Car Charger Outlet Cigarette Lighter Female Socket Converter - 110/120 to 12 Volt AC/DC Adapter Power Supply, Aupoko R134A AC Refrigerant Charge Hose, 1/2 Acme Can Opener Tap Dispensing Valve, and Recharge Hose with Pressure Gauge, Fits for Car AC Air Conditioning Refrigerant, KRD PERFORMANCE 1/4 (6.3mm) SAE to 1/8 (3.2mm) 90 Degree Nylon Fuel Line Hose Quick Release Connector, Pack of 2, GlowShift 8mm (5/16") Fuel Line Fuel Pressure Sensor T-Fitting Adapter Compatible with Subaru Impreza WRX STI 2002-2014, Kozyvacu AUTO AC Repair Complete Tool Kit with 1-Stage 3.5 CFM Vacuum Pump, Manifold Gauge Set, Hoses and its Acccessories (KZTA35011), Mityvac MV6835 Premium Pneumatic Air Operated Brake and Clutch Bleeding Kit, Variable Control Thumb Throttle, Quick Connect Coupler, 1.9 Quart Reservoir, JIFETOR 7PCS Refrigerant Swivel Adapter Kit, 1/4" AC Angled Compact Ball Valve and 1/4" Male to 5/16" Female R410A Adapter for Mini Split Air Conditioner, for Charging AC HVAC R410A R134A, Dorman 800-401 Heater Hose Connector Compatible with Select Models, AutoWanderer Tool 3 Way A/C Manifold Gauge Air Conditioning Diagnostic Freon Charging Set Fits Auto Household R134A R404A R12 R22 Refrigerants, Hanperal DC 12V 5L Transfer Pump Extractor Oil Fluid Scavenge Suction Vacuum, Astro Pneumatic Tool 7856 Universal Air Powered Cooling System Pressure Tester, AutoWanderer Tool AC Gauge Set, 3 Way AC Manifold Gauge Air Conditioning Freon Charging Set with 3FT Hose, Quick Couplers, Can Tap, Acme Adapter, Valve Core Remover for R134a R12 R22 R404A, Fuel Line Quick Connector 5/8 Bundy Female to Barb 90 Degree for 5/8 Steel to 9/16 ID Nylon Tubing, LIYYOO Refrigerant Charging Hoses with Diagnostic Manifold Gauge Set for R410A R22 R404 Refrigerant Charging,1/4" Thread Hose Set 60" Red/Yellow/Blue (3pcs) with 2 Quick Coupler, MASTERCOOL (81490) R134A Valve Core Remover Installer, yellow gold, 6.8 inch (for Standard 5mm valve cores only), Jabsco Flojet 20381-002 1/2" Hose Barb Quad Port Fitting, Yamaha OEM PWC WaveRunner/Sport Jet Boat Conduction Water Flush Fitting, Mityvac MV6412 ATF Pneumatic Refill System; Air Operated, Services Sealed Automatic Transmissions with up to 2.5 Gallons of Fluid; Includes Quick-Change Style Accessory Connections, BACOENG Car AC Tool Set, R134A Quick Couplers with Refrigerant Can Tap and Valve Core Remover, JIFETOR 3 Way AC Manifold Gauge Set, HVAC Diagnostic Refrigerant Charging Tool for Auto Household R404A R134A Refrigerant, Quick Couplers Valve Core Accessories Kit(5FT Hose), Motive Products 0117 Ford/Import 3-Tab Power Bleeder Black Label, GINTOOYUN 16.5inch EC5 to Car Cigarette Lighter Cable, 12/24V 14AWG EC5 Male to Car Cigarette Lighter Plug for Car, Car Air Pump, Car Battery ,etc, Orion Motor Tech AC Vacuum Pump and Gauge Set, 4 Way AC Gauges and 4 cfm HVAC Vacuum Pump with Leak Detector 5FT Hoses Couplers R410a Adapters, Puncturing & Self Sealing R134a Can Taps AC Recharge Kit, 6 Pieces 6015 R134A Brass Refrigerant Tank Adapter to R12 Fitting Adapter 1/2 Female to 1/4 Male Flare Adaptor Valve Core and 6014 Vacuum Pump Adapter 1/4 Inch Flare Female to 1/2 Inch Male, Suitable for various air conditioning systems. Brass barbed hose fittings will glue nicely into PVC pipe caps with pipe cement. Breather covers the end where there is a hole on the bottom face. This one reads in millibar (1/1000th of an atmosphere) and zero millibar (mbar) is equal to full vacuum or no air. 
Some vacuum pumps cannot accommodate the type of oil-mist separator that has an outlet for exhaust tubing. See and test specialist products in our on-site demo room. Any place that makes hydraulic hoses to order can make you air or vacuum hoses too and it can be much cheaper than McMaster-Carr or your local equivalent! I made some of these for small infusions and wet-layup and they lasted for years. Breather fabric works ok too. See SOP: Cryogens and Dry Ice for more information aboutpreventing theformation of liquidoxygen and what steps to take if you observe that oxygen has condensed. This article is about the stuff between your vacuum pump and your part: the hoses, fittings and connectors. Clear wire-reinforced PVC hose is good for this and reasonably inexpensive. Connect the pump inlet and outlet properly. Extreme care must be exercised to prevent the introduction of room air into a trap containing liquid nitrogen. This should be fine for almost anything you want to do on a hobby level. If you are looking for a pump too, please check out: HOW TO CHOOSE A VACUUM PUMP FOR COMPOSITES. There arent really any other good ways to apply huge amounts of pressure to large irregularly shaped areas! Materials, equipment and training for advanced composites. You can either buy pre-made hoses and add fittings or have them made up by a hose shop locally to your specifications. Diffusion pumps contain oil at very high temperatures. The cheapest is a plastic (polyethylene here regular infusion hose) that is stiff enough not to crush and flexible enough to handle. Our range includes permanent metal fittings for 'dry side' use as well as disposable plastic fittings for connecting and branching 'wet side' resin hoses. Shop products from small business brands sold in Amazons store. For a lot of composites technologies, vacuum is an essential part of the process. My goal is not to tell you exactly what to use, but to show you what I use and explain why, and point out the key ingredients to successful vacuum systems. How to build with composite materials: design, tooling, materials, laminating and more. 
It will handle low pressure autoclave use too. 
Price and other details may vary based on product size and color. Avoid the more flexible clear (Tygon type) PVC hose because it crushes easily and will choke itself off if bent around tight corners! Please do not copy without permission. I didnt buy it new (came with a used vacuum pump) and I dont suggest you buy a fully assembled version if you want to save money. They are cheap, and some types will work ok for a while. Routine maintenance such as pump-oil changes may be performed by lab workers. Designed to sit inside our 8mm ID silicone vacuum hose to make the hose crush proof, including for autoclave use. Vacuum pumps must be serviced by an authorized vendor on the schedule recommended by the pump manufacturer. The base is a piece of PVC (or metal, or something vacuum-tight) that is held on with tacky tape (yellow). Subscribers to our insider newsletter get exclusive savings on selected products and early access to FREE training content.
Guidance to Supervisors - Staff with COVID-19 Health Questions, Research Resumption: Lab PPE and Preventing COVID-19 Transmission in Penn Labs, Lab Cleaning and Disinfection COVID-19 Guidance, Reordering Information for COVID-19 Transmission Prevention Supplies, BSL-2 Enhanced Training for Processing COVID-19 Patient Specimens, Close Proximity Work Standard Operating Procedure, Eating and Use of Conference Rooms - Best Practices, Wastewater Monitoring: Spring 2021 Pilot Program - FAQ, Face Coverings, Masks and Respirators Compared, Mask and General PPE Guidance for Essential Penn Laboratory Personnel, Precautions for the Distribution of University Supplied Face Masks, Recommendations for cleaning labs with Suspected/Confirmed COVID-19 cases, EHRS COVID-19 Guidance for FRES and Housekeeping, EHRS COVID-19 Guidance for Security and Delivery Activities. So you place your vacuum fitting inside a secondary piece of 4 tube-bag that has strips of infusion flow media inside. Right there in the middle are two little silver-colored push-to-connect fittings for use with the plastic hoses. Measure before you order. Home:Articles:Tools and Equipment: Vacuum Stuff. The last thing to look at here is a vacuum regulator. Infusion is all about vacuum as much as possible in many cases. When in doubt add some bag sealant tape!
Sponsored | Based on star rating and number of customer ratings, AUTOGEN 2-Stage Air Vacuum Pump 5CFM 3/4HP 0.3 Pa for HVAC/AUTO AC Refrigerant Recharging, Degassing Wine, Milking Cow, Food Processing, Orion Motor Tech AC Vacuum Pump and Gauge Set, with 4CFM Vacuum Pump, Leak Detector, 3 Hoses Quick Couplers, Puncture and Self-Sealing Can Taps, AC Vacuum Pump Kit for R134a R12 R22 R502 Refrigerant, Aupoko R12 R22 to R134a Adapters, R134A Refrigerant Tank/Vacuum Pump Port Connection Adapters - 1/4" Flare Female x 1/2" Male - Refrigeration Handling Charging Tool, Refrigerant Charging Hose with Ball Valve Apply to R134A R12 R22 R502 R404 Refrigerant Air Conditioning Manifold Gauge 1/4" Thread Hose Set 60" Red/Yellow/Blue (Pack of 3), Adjustable R134a Quick Coupler High Low Conversion Adapter Fittings + R134a Refrigerant Tank Adapter Kit for AC Air conditioning Refrigerant R134a HVAC Air Condition Gauge Manifold Hose Connector, R410A Adapter 5/16 inches SAE Female to 1/4 inches SAE Male Flare for Air Conditioners HVAC, 2 Straight Adapter + 2 Angled Adapter, Aupoko AC R134A Adapters Quick Couplers with Can Tap Valve Kit, Adjustable R134A Adapter Fittings Quick Coupler, R134A Can Tap Valve Refrigerant Dispenser with Tank Adapter and Valve Core Remover Kit, Orion Motor Tech 3.5cfm Vacuum Pump, 1 Stage HVAC Vacuum Pump for R12 R22 R134a R410a Systems, Small 1/4hp 38 Micron Vacuum Pump for Air Conditioner Servicing Resin Degassing and More, Oil Included, JIFETOR 6PCS Refrigerant and Vacuum Pump Adapters Kit, 1/4" AC Angled Compact Ball Valve, 1/4" Male Flare to 1/2" Female SAE and 1/2" Male Flare to 1/4" Female SAE Vacuum Pump Connectors, R1234YF Vacuum Pump Adapter, Refrigerant Tank to R12 Fitting Adapter, 1/2 Female to 1/4 SAE Male Flare Adapter, Fits for R1234yf to R12 Refrigerant System, JIFETOR 3 Way AC Manifold Gauge Set, HVAC Diagnostic Charging Tool for Auto Household R404A R134A Refrigerant, Quick Couplers Adapter Valve Core Tool (3FT Hose, Can Tap), 2 Pieces 6015 R134A Brass Refrigerant Tank Adapter to R12 Fitting Adapter 1/2 Female to 1/4 Male Flare Adaptor Valve Core and 6014 Vacuum Pump Adapter 1/4 Inch Flare Female to 1/2 Inch Male, Universal Vacuum Hose Adapter Kit Reducer Attachment Set Converter from 1 1/2 inch to 1 1/4 inch from 1 3/8 inch to 1 1/4 inch Dust Hose Port Adapter, Boltigen AC R134a Quick Coupler Adapter Fitting with R134A Self-Sealing and Puncture Style Can Tap Valves, Tank Adapters for AC System, Aupoko R1234yf Quick Couplers, High/Low Side R1234yf Manual Couplers Connector Adapters with 1/4" Male Port, Replacement for A/C Refrigerants Manifold Gauge Set, Aupoko R12 R22 to R134a Adapters, R134A Refrigerant Tank Adapter Kit with Valve Core Remover, 1/4" Male to 1/2" Female, 1/4 SAE Female X 1/2 Male Refrigerant Tank Adapters, R134A Refrigerant Tank Converter Adapter Vacuum Pump 1/4" SAE to 1/2" Female, R1234yf Adapter Kit, R1234yf Quick Couplers Set, High/Low Pressure Side R1234yf Manual Connector Kit, with Self-Sealing and Puncture Style R1234yf Can Tap, tank adapter and valve core remover, Joywayus Angled High Low R134a AC Quick Coupler Adapter Fitting Freon Manifold Gauge Hose Conversion Kit1/4" SAE HVAC, Orion Motor Tech AC Vacuum Pump and Gauge Set, 4.5 cfm HVAC Vacuum Pump and 4 Way AC Gauges for R134a R410a R22 Refrigerants, with Leak Detector, Puncture and Self-Sealing Can Taps Quick Couplers, Wisepick Quick Adapter Adjustable High and Low Side Connection R134a Quick Coupler Connection to R1234yf R134a to R1234yf Conversion Kit for AC Refrigerant, Camco Lead-Free Water Bandit, 3.25 Inches, Blue (22484), JIFETOR 3 Way AC Manifold Gauge Set, HVAC Diagnostic Charging Tool for Auto Household R404A R134A Refrigerant, with 5FT Hose, Adjustable Quick Coupler, Can Tap and Adapter, R1234YF To R134A Low Side Quick Coupler Adapter, R134a Adapter Car Air-conditioning Fitting Connector Refrigerant Can Compatible Valve Tool, R134a Refrigerant for Car Air-Conditioning AC Charging, VIVOHOME 110V 1/4 HP 3.5 CFM Single Stage Rotary Vane Air Vacuum Pump and R134a AC Manifold Gauge Set Kit for HVAC Air Conditioning Refrigeration Recharging ETL Listed, FANOVO R134A Can Tap Valve Piercing Type Refrigerant Dispenser Tool with 6015 Refrigerant Tank Adapter and 6014 Pump Adapter Valve Core Remover for Air Conditioner Manifold Freon Charging Hose, FJC 6018 R134a Coupler to R12 Hose Adapter 14mm x 1.5 x 1/4" Male Flare, AC to DC Converter 110V to 12V 5A 60W Car Cigarette Lighter Adapter - Wall Plug 120V to 12V Car Charger Outlet Cigarette Lighter Female Socket Converter - 110/120 to 12 Volt AC/DC Adapter Power Supply, Aupoko R134A AC Refrigerant Charge Hose, 1/2 Acme Can Opener Tap Dispensing Valve, and Recharge Hose with Pressure Gauge, Fits for Car AC Air Conditioning Refrigerant, KRD PERFORMANCE 1/4 (6.3mm) SAE to 1/8 (3.2mm) 90 Degree Nylon Fuel Line Hose Quick Release Connector, Pack of 2, GlowShift 8mm (5/16") Fuel Line Fuel Pressure Sensor T-Fitting Adapter Compatible with Subaru Impreza WRX STI 2002-2014, Kozyvacu AUTO AC Repair Complete Tool Kit with 1-Stage 3.5 CFM Vacuum Pump, Manifold Gauge Set, Hoses and its Acccessories (KZTA35011), Mityvac MV6835 Premium Pneumatic Air Operated Brake and Clutch Bleeding Kit, Variable Control Thumb Throttle, Quick Connect Coupler, 1.9 Quart Reservoir, JIFETOR 7PCS Refrigerant Swivel Adapter Kit, 1/4" AC Angled Compact Ball Valve and 1/4" Male to 5/16" Female R410A Adapter for Mini Split Air Conditioner, for Charging AC HVAC R410A R134A, Dorman 800-401 Heater Hose Connector Compatible with Select Models, AutoWanderer Tool 3 Way A/C Manifold Gauge Air Conditioning Diagnostic Freon Charging Set Fits Auto Household R134A R404A R12 R22 Refrigerants, Hanperal DC 12V 5L Transfer Pump Extractor Oil Fluid Scavenge Suction Vacuum, Astro Pneumatic Tool 7856 Universal Air Powered Cooling System Pressure Tester, AutoWanderer Tool AC Gauge Set, 3 Way AC Manifold Gauge Air Conditioning Freon Charging Set with 3FT Hose, Quick Couplers, Can Tap, Acme Adapter, Valve Core Remover for R134a R12 R22 R404A, Fuel Line Quick Connector 5/8 Bundy Female to Barb 90 Degree for 5/8 Steel to 9/16 ID Nylon Tubing, LIYYOO Refrigerant Charging Hoses with Diagnostic Manifold Gauge Set for R410A R22 R404 Refrigerant Charging,1/4" Thread Hose Set 60" Red/Yellow/Blue (3pcs) with 2 Quick Coupler, MASTERCOOL (81490) R134A Valve Core Remover Installer, yellow gold, 6.8 inch (for Standard 5mm valve cores only), Jabsco Flojet 20381-002 1/2" Hose Barb Quad Port Fitting, Yamaha OEM PWC WaveRunner/Sport Jet Boat Conduction Water Flush Fitting, Mityvac MV6412 ATF Pneumatic Refill System; Air Operated, Services Sealed Automatic Transmissions with up to 2.5 Gallons of Fluid; Includes Quick-Change Style Accessory Connections, BACOENG Car AC Tool Set, R134A Quick Couplers with Refrigerant Can Tap and Valve Core Remover, JIFETOR 3 Way AC Manifold Gauge Set, HVAC Diagnostic Refrigerant Charging Tool for Auto Household R404A R134A Refrigerant, Quick Couplers Valve Core Accessories Kit(5FT Hose), Motive Products 0117 Ford/Import 3-Tab Power Bleeder Black Label, GINTOOYUN 16.5inch EC5 to Car Cigarette Lighter Cable, 12/24V 14AWG EC5 Male to Car Cigarette Lighter Plug for Car, Car Air Pump, Car Battery ,etc, Orion Motor Tech AC Vacuum Pump and Gauge Set, 4 Way AC Gauges and 4 cfm HVAC Vacuum Pump with Leak Detector 5FT Hoses Couplers R410a Adapters, Puncturing & Self Sealing R134a Can Taps AC Recharge Kit, 6 Pieces 6015 R134A Brass Refrigerant Tank Adapter to R12 Fitting Adapter 1/2 Female to 1/4 Male Flare Adaptor Valve Core and 6014 Vacuum Pump Adapter 1/4 Inch Flare Female to 1/2 Inch Male, Suitable for various air conditioning systems. Brass barbed hose fittings will glue nicely into PVC pipe caps with pipe cement. Breather covers the end where there is a hole on the bottom face. This one reads in millibar (1/1000th of an atmosphere) and zero millibar (mbar) is equal to full vacuum or no air. Some vacuum pumps cannot accommodate the type of oil-mist separator that has an outlet for exhaust tubing. See and test specialist products in our on-site demo room. Any place that makes hydraulic hoses to order can make you air or vacuum hoses too and it can be much cheaper than McMaster-Carr or your local equivalent! I made some of these for small infusions and wet-layup and they lasted for years. Breather fabric works ok too. See SOP: Cryogens and Dry Ice for more information aboutpreventing theformation of liquidoxygen and what steps to take if you observe that oxygen has condensed. This article is about the stuff between your vacuum pump and your part: the hoses, fittings and connectors. Clear wire-reinforced PVC hose is good for this and reasonably inexpensive. Connect the pump inlet and outlet properly. Extreme care must be exercised to prevent the introduction of room air into a trap containing liquid nitrogen. This should be fine for almost anything you want to do on a hobby level. If you are looking for a pump too, please check out: HOW TO CHOOSE A VACUUM PUMP FOR COMPOSITES. There arent really any other good ways to apply huge amounts of pressure to large irregularly shaped areas! Materials, equipment and training for advanced composites. You can either buy pre-made hoses and add fittings or have them made up by a hose shop locally to your specifications. Diffusion pumps contain oil at very high temperatures. The cheapest is a plastic (polyethylene here regular infusion hose) that is stiff enough not to crush and flexible enough to handle. Our range includes permanent metal fittings for 'dry side' use as well as disposable plastic fittings for connecting and branching 'wet side' resin hoses. Shop products from small business brands sold in Amazons store. For a lot of composites technologies, vacuum is an essential part of the process. My goal is not to tell you exactly what to use, but to show you what I use and explain why, and point out the key ingredients to successful vacuum systems. How to build with composite materials: design, tooling, materials, laminating and more. It will handle low pressure autoclave use too.