Vacuum Pipe and Fittings for Central Vacuums
We have everything you need to install a central vacuum or retrofit your old one. Two inch outer diameter thin wall PVC vacuum pipe (and fittings) are standard in 99% of installations. If you have smaller pipe, there are pipe adapters below. Use standard PVC glue for pipe and fittings.
Our Installation home page is full of links on everything you need to know about installation.

Make your own Installation Kit by using the Installation Parts Guide to quickly figure out the supplies you will need for your specific installation.

All ASTM Standard F 2158-01 compliant for industry standard central vacuum pipe and fittings.

80ft PVC Central Vac Pipe (ten 8-ft) (Ground Ship)
80ft PVC Central Vac Pipe (ten 8-ft) (Ground Ship)
Use this vacuum pipe for seamless connections into vacuum fittings. Has 2" outer diameter whereas SCH-40 plumbing pipe is thicker and measured by inner diameter. If you need a complete lift of pipe (800ft total) enter 10 as the quantity. Manufactured to ASTM standard F2158.
SHIPPED REGULAR GROUND ONLY.
$88.00 Part #521-10
QTY
In Stock
 
40ft PVC Central Vac Pipe (ten 4-ft) (Ground Ship)
40ft PVC Central Vac Pipe (ten 4-ft) (Ground Ship)
Great for medium central vacuum jobs such as repairs, relocating a valve, adding a valve, exhausting, etc. Be sure to get extra PVC couplings (below) to fit it all together. This vacuum tubing is 2-inch outer diameter. Manufactured to ASTM standard F2158.
SHIPPED REGULAR GROUND ONLY.
$54.85 Part #520-10
QTY
In Stock
 
16ft PVC Central Vacuum Pipe  (four 4-foot tubes)
16ft PVC Central Vacuum Pipe (four 4-foot tubes)
Great for small central vacuum jobs such as repairs, relocating a valve, adding a valve, exhausting, etc. Be sure to get extra PVC couplings (below) to fit it all together. This vacuum tubing is 2-inch outer diameter. Manufactured to ASTM standard F2158.
$33.85 Part #520-4
QTY
In Stock
 
4ft PVC Central Vacuum Pipe (two 2-foot tubes)
4ft PVC Central Vacuum Pipe (two 2-foot tubes)
Comes in two 2-foot sections. If putting two pieces together use a coupling. Manufactured to ASTM standard F2158.
$14.30 Part #520-2
QTY
Not In Stock
 
J Pipe Hanger (case=25qty)
J Shaped Pipe Hanger
Used to hang 2" OD Central Vacuum Pipe at a distance of a foot or less. Comes with a nail. Make of sturdy PVC. The pipe snaps into the J and looks real clean. To order a case type in 25.
$2.15 Part #512J
QTY
In Stock
 
90 Short PVC  Vacuum Connector
90 Short PVC Vacuum Connector
Use this fitting at the mounting plates only. Since this is the sharpest turn in the system, potential clogging will occur with easy access - right at the inlet valve! If you need a case, enter 90 for the quantity.
$1.35 Part #501
QTY
In Stock
 
90 Sweep PVC  Vacuum Connector
90 Sweep PVC Vacuum Connector
M.D. Manufacturing sells the highest quality fittings. We suggest avoiding PVC sch40 fittings. They are thin and leave a 'step' where the pipe connects. Toothpicks or pins can get stuck creating clogs. Also make sure fittings have a 3/4" cuff, not 1/2", to provide strength at joints. If you need a case, enter 115 for the quantity.
$1.50 Part #502
QTY
In Stock
 
90 Spigot PVC  Vacuum Connector
90 Spigot PVC Vacuum Connector
Spigot fittings are made to fit directly into other fittings. This will prove helpful in tight spots! If you need a case of these enter 115.
$1.40 Part #503
QTY
In Stock
 
45 Degree PVC  Vacuum Connector
45 Degree PVC Vacuum Connector
We suggest using 45's, even two of them when possible, to use less 90's. When the pipe line needs to run up or down, angle a 90 at 45-degrees into a 45 fitting. If you need a case, enter 125 for the quantity.
$1.35 Part #504
QTY
In Stock
 
45 Spigot  PVC  Vacuum Connector
45 Spigot PVC Vacuum Connector
Spigots fit directly into another fitting. If you need a case, enter 125 for the quantity.
$1.35 Part #505
QTY
In Stock
 
Coupling PVC Vacuum Connector
Coupling PVC Vacuum Connector
For connecting two pieces of pipe together. If you need a case, enter 200 for the quantity.
$0.65 Part #507
QTY
In Stock
 
90 Sweep Tee PVC Vacuum 3-way Connector
90 Sweep Tee PVC Vacuum 3-way Connector
For connecting a branch to the main line. Be sure the airflow is adequate. Do not install the tee backwards! If you need a case, enter 45 for the quantity.
$2.05 Part #508
QTY
In Stock
 
45 Wye PVC Vacuum 3-way Connector
45 Wye PVC Vacuum 3-way Connector
For connecting a branch to the main line. Be sure the airflow is adequate. Do not install the wye backwards! If you need a case, enter 45 for the quantity.
$1.95 Part #509
QTY
In Stock
 
Install Kit with 1 Electric Inlet
Install Kit with 1 Electric Inlet
Includes the items pictured and comes in a handy box straight off our warehouse shelf. Add pipe (40ft recommended) and maybe some extra couplings. Buy regular PVC cement from a local store. Includes one pure white inlet valve and backing plate. The included wire is low voltage and runs from the faceplate to the vacuum canister to turn it on. In addition, Romex (110 volt) wire from a local store is need for the 110 volts. The faceplates' 110 volt wires connect to the romex you stub out from the backing plate box during rough-in. Made by Hayden.
$43.00 Part #662HW1
QTY
In Stock
 
Install Kit with 3 Electric Inlets
Install Kit with 3 Electric Inlets
Includes the items pictured and comes in a handy box straight off our warehouse shelf. Add pipe (80ft recommended) and maybe some extra couplings. Buy regular PVC cement from a local store. Includes three pure white inlet valves and backing plates. The included wire is low voltage and runs from the faceplate to the vacuum canister to turn it on. In addition, Romex (110 volt) wire from a local store is need for the 110 volts. The faceplates' 110 volt wires connect to the romex you stub out from the backing plate box during rough-in. Made by Hayden.
$126.00 Part #662HW3
QTY
In Stock
 
Install Kit with 1 Non-Electric Inlet
Install Kit with 1 Non-Electric Inlet
Includes the items pictured and comes in a handy box straight off our warehouse shelf. Add pipe (40ft recommended) and maybe some extra couplings. Buy regular PVC cement from a local store. Includes one pure white inlet valve and backing plate. The included wire is low voltage and runs from the backing plate to the vacuum canister to turn it on. The wire does NOT have 110 volts. Made by Hayden.
$34.00 Part #652HW1
QTY
Not In Stock
 
Install Kit with 3 Non-Electric Inlets
Install Kit with 3 Non-Electric Inlets
Includes the items pictured and comes in a handy box straight off our warehouse shelf. Add pipe (80ft recommended) and maybe some extra couplings. Buy regular PVC cement from a local store. Includes three pure white inlet valves and backing plates. The included wire is low voltage and runs from the backing plate to the vacuum canister to turn it on. The wire does NOT have 110 volts. Made by Hayden.
$95.00 Part #652HW3
QTY
In Stock
 
Double Wye PVC Vacuum 3-way Connector
Double Wye PVC Vacuum 3-way Connector
If you need a case, enter 65 for the quantity.
$2.35 Part #510
QTY
In Stock
 
Straight Tee PVC Vacuum 3-way Connector
Straight Tee PVC Vacuum 3-way Connector
The Straight Tee is not recommended for any part of a central vacuum installation. Use only when necessary. It has poor air-flow characteristics and when used for back to back inlet valves dirt is deposited behind the opposite inlet valve door.
$2.25 Part #511
QTY
In Stock
 
Pipe Strap
Pipe Strap
Used mainly in existing home installations where the pipe is visible (in closets, for example). If you need a case, enter 500 for the quantity.
$0.50 Part #512
QTY
In Stock
 
3-in-1 Mounting Bracket PVC
3-in-1 Mounting Bracket PVC
Most popular bracket for all rectangle shaped Basic Inlet Valve Covers. Install into new construction by nailing or screwing it into a stud. For existing home installation cut the plastic stud mounting side off and set it in a 2-3/8" x 4-1/4" hole cut into drywall (or wall material). Fasten inlet cover (with attached low voltage wire) to backing plate for a long lasting, firm hold. When piping, connect a fitting such as a tight 90 or coupling to the flange on the back side of the mounting bracket. For existing installation it is helpful to glue the fitting on before mounting it with the vacuum plate to the wall. If you need a case of these enter 75.
$5.90 Part #517
QTY
In Stock
 
Metal Mounting Bracket with Spigot
Metal Mounting Bracket with Spigot
Includes attached coupling, gasket and screws. Used in new construction. Fix to a stud. When piping, connect a fitting such as a tight 90 or coupling to the back side flange. Finish it with a basic inlet valve cover.

For use in metal piping jobs use this part and its gasket along with #524S Flanged 90 Ell.
Case is 120.

$7.00 Part #515
QTY
In Stock
 
Pipe Collar
Pipe Collar
A cosmetic inlet facing, used in existing home installations where the pipe and low voltage wire go into the drywall. If you need a case, enter 100 for the quantity.
$1.15 Part #513
QTY
In Stock
 
Exhaust Vent Door for Central Vacuum Pipe
Exhaust Vent Door for Central Vacuum Pipe
Installed on the outside of the home to exhaust the power unit. This is not needed with M.D.'s bag type units. Fits 2" OD (Vacuum PVC Pipe). Overall size is 3-5/8"w X 4-5/8"h. Distance on the door flap is 2 3/4 inch. If you need a case, enter 40 for the quantity.
$6.35 Part #518
QTY
In Stock
 
PVC Plaster Guard (2 per pack)
PVC Plaster Guard (2 per pack)
Useful in new construction installations to cover up the backing plate, protecting it from dry-walling and painting. Also lets drywallers know where to cut an opening. You can use a rectangle piece of cardboard to protect the hole and wires or one of these. NOTE: You'll need longer screws if your back mount is plastic and also note that this guard covers 90% of the back mount - the edges are open because the guard is rounded not square. If you need a case, enter 125 for the quantity.
$5.00 Part #519
QTY
In Stock
 
Steel for Firewall 2 x 6 inch
Steel for Firewall 2 x 6 inch
For new construction when the pipe line penetrates the fire barrier wall in garages, for example. Use rubber cement and couplings to connect to standard vacuum PVC piping.
$7.10 Part #523S
QTY
In Stock
 
FireStop Ring by STI
FireStop Ring by STI
Fire Stop Ring by STI was designed specifically for the central vacuum industry. It is easy to apply and very affordable.
$12.60 Part #513FK
QTY
In Stock
 
Fire Stop Ring
Fire Stop Ring
Made by 3M, this fire stop ring fits over the pipe and collapses the PVC pipe and wire when heated. Using one on each side of the wall may be recommended for some applications.

$59.65 Part #513F
QTY
In Stock
 
2inch ID Flexible Pipe Vacuum Hose (per/foot)
Flexible Pipe (sold by foot)
Flex Pipe is excellent for installing VacPan automatic dustpans. Central Vacuum 2" OD PVC pipe fits snugly into this flexible pipe that is 2" ID. Use a Hose Clamp for Flex Pipe for best connection, do not glue. Not recommended as a replacement for rigid pipe.
SOLD BY THE FOOT. Enter number of feet you need.
$3.85 Part #340
QTY
In Stock
Additional Item
Hose Clamp for Flex Pipe
$4.65 - In Stock

More Information
QTY
 

Hose Clamp for Flex Pipe
The Hose Clamp for Flex Pipe keeps your flexible pipe clamped down on the 2" OD central vacuum pipe good and tight. Please do not glue the flex pipe to the PVC but use a clamp of some sort such as this for best results.
$4.65 Part #5340C
QTY
In Stock
 
Pipe Adapter for 1.8125 inch OD pipe to 2 inch Vac
Pipe Adapter for 1.8125 inch OD pipe to 2 inch Vac
Adapter used to mate older HP Vacuflo or any 1.8125 inch (1-13/16") Outer Diameter vacuum pipe (not SCH 40) to standard 2 inch OD thinwall vacuum pipe.
$1.60 Part #507P1
QTY
In Stock
 
Pipe Adapter for 1.75 inch OD pipe to 2 inch Vac
Pipe Adapter for 1.75 inch OD pipe to 2 inch Vac
Adapter used to mate smaller vacuum pipe (not SCH 40) with 1.75 inch Outer Diameter (as some Kenmore systems have) to standard 2 inch OD thinwall vacuum pipe.
$1.55 Part #507P2
QTY
In Stock
 
Pipe Cap, White, PVC
Pipe Cap, White, PVC
Used to terminate the end of a vacuum pipe. Also used to cap the unused debris intake neck on any of MD's power units. If you need a case of these enter 50.
$0.75 Part #514
QTY
In Stock
 
Muffler for vacuum fits 2-inch OD exhaust ports
Muffler for vacuum fits 2-inch OD exhaust ports
Is your power unit too loud? Decrease that irritating sound by inserting this muffler into any central vacuum that has 2" OD diameter exhaust port(s). One muffler per exhaust port on the vacuum itself. Use a 90 Spigot Sweep Ell (part #503 in Hardware / Pipe and Fittings) to install it vertically if desired. Total Length is 13.5 inches.
$21.00 Part #260
QTY
In Stock
 
3in1 Mounting Bracket for 2x3in wall
3in1 Mounting Bracket for 2x3in wall
Use with 511SN when you have walls that are not as wide as standard 2x4 walls. If you need a case of these, please enter 75.
$2.90 Part #511MP
QTY
In Stock
 
Special Short 90 for 2x3in walls
Special Short 90 for 2x3in walls
Use only with 511MP.
$1.75 Part #511SN
QTY
In Stock
 
Cyclonic Pre-Filter Separator
Cyclonic Pre-Filter Separator
Tank Only, No Motor, Pre-Unit-Filter Tank. Dirty air goes into the non-centered intake on top of the tank. As it enters the tank it creates a cyclonic cleaning action causing 96% of the debris to fall down to the bottom. The air is then moved out of the tank through the center hole on top where it heads to the actual motorized vacuum unit. Size: 31" tall, 14" wide, and holds 7 gallons.
$501.55 Part #115AM
QTY
In Stock
 
Motor Exhaust Coupling
Motor Exhaust Coupling
Can be used in either direction. Wide side: inner diameter is 2", outer is 2-1/4". Narrow side: inner diameter is 1-7/8" and outer is 2-1/8". Central vacuum pipe fits into it to extent the exhaust. Central vacuum tubing is thin wall PVC, not SCH40. But SCH40 can be used, the 1.5" ID has a 2" OD that fits into the coupling like vacuum pipe does. SCH40 is three times thicker so the exhaust might be constricted a little, but with no adverse affects.
$3.55 Part #507EX
QTY
In Stock
 

Air Relief Valve for Central Vacuum Systems
The Air Relief Valve stops damage to your motor caused by clogs and blockage. In the instance that a clog or blockage occurs the valve will spring open, allowing air to the motor, which prevents damage to the motor. You will need to purchase a sweep tee connector and splice it into your pipes - the closer to the unit the better.

$11.00 Part #5613ARV
QTY
In Stock
 

Unit Install Kit
The parts and and adapters you need to swap out your old central vacuum power unit for a new one from M.D. Manufacturing, Inc. Comes with two 2-foot sections of central vacuum pipe. Includes an adapter for narrower Kenmore PVC pipe. Kit has a hose adapter to fit a new hose into a 1-1/4 inch diameter vacuum wall port so you can buy any new attachment kit and be assured it fits any central vacuum system no matter the brand, year or model.
$25.80 Part #500CK
QTY
Not In Stock