4 ft Central Vacuum PVC Pipe for MD Central Vacuum – Part# 520-2
Two 2-foot central-vacuum pipe sections. Confirm pipe and fitting dimensions; joining coupling is sold separately.
This side-opening SuperValve electric inlet cover kit gives easier access to the hose port on an MD central vacuum system. It includes the rough-in mounting plate with J-box, face plate, and screws for replacing compatible electric inlets.
Available from Authorized MD Dealer Ace Vacuums, with help matching parts to your MD central vacuum system at our Fairfax and Leesburg, VA showrooms.
This full-face side-opening SuperValve inlet cover kit is designed for MD central vacuum installations that use a compatible electric inlet. The side-opening door provides easier access to the hose port, and the full-size door opens 180 degrees so it can swing flush with the wall.
It replaces electric inlets sold here that have two mounting screws on the top and bottom spaced 3-7/8 inches to 4 inches apart. SuperValve styles and colors are interchangeable, and this inlet has a 1-1/2 inch diameter hole.
The kit includes the rough-in mounting plate with J-box, face plate, and screws. Wiring includes two screw connections on the back for low voltage wire and a high voltage wire lead coming out the back to connect the home's power.
This product is listed for MD (Modern Day) central vacuum systems. Fit can depend on your hose, inlet type and system age, so confirm your setup before ordering or call Ace Vacuums for help.
| Specification | Details |
|---|---|
| Brand | MD |
| Product type | SuperValve full-face side-opening inlet cover kit |
| Part number | 663HWS |
| Color | White |
| Outer dimensions | 3-1/8 in. by 4-7/8 in. |
| Hose port diameter | 1-1/2 in. |
| Mounting screw spacing | 3-7/8 in. to 4 in. |
| Replaces | #2050 Full-Face SuperValve |
| Exact replacement for | Wall inlet model LR61865 |
| Wiring | Two screw connections for low voltage wire and a high voltage wire lead |
| Includes | Rough-in mounting plate with J-box, face plate, and screws |
| Trim plate | Not available |
| Made by | Hayden / Canplas / Vaculine |
| Compatibility note | AirMaster, Modern Day, SilentMaster, Flo-Master, Beam, Nutone, Electrolux, Vacuflo, Kenmore and Eureka |
| Authorized Dealer | Ace Vacuums |
When you purchase from Authorized MD Dealer Ace Vacuums, you receive:
The Full-Face Side-Opening Inlet Cover Kit for MD Central Vacuum is available online and in-store through Authorized MD Dealer Ace Vacuums.
Call 703-997-9292 (ext. 1 Fairfax, ext. 2 Leesburg).
This side-opening SuperValve electric inlet cover kit gives easier access to the hose port on an MD central vacuum system. It includes the rough-in mounting plate with J-box, face plate, and screws for replacing compatible electric inlets.
Available from Authorized MD Dealer Ace Vacuums, with help matching parts to your MD central vacuum system at our Fairfax and Leesburg, VA showrooms.
This full-face side-opening SuperValve inlet cover kit is designed for MD central vacuum installations that use a compatible electric inlet. The side-opening door provides easier access to the hose port, and the full-size door opens 180 degrees so it can swing flush with the wall.
It replaces electric inlets sold here that have two mounting screws on the top and bottom spaced 3-7/8 inches to 4 inches apart. SuperValve styles and colors are interchangeable, and this inlet has a 1-1/2 inch diameter hole.
The kit includes the rough-in mounting plate with J-box, face plate, and screws. Wiring includes two screw connections on the back for low voltage wire and a high voltage wire lead coming out the back to connect the home's power.
This product is listed for MD (Modern Day) central vacuum systems. Fit can depend on your hose, inlet type and system age, so confirm your setup before ordering or call Ace Vacuums for help.
| Specification | Details |
|---|---|
| Brand | MD |
| Product type | SuperValve full-face side-opening inlet cover kit |
| Part number | 663HWS |
| Color | White |
| Outer dimensions | 3-1/8 in. by 4-7/8 in. |
| Hose port diameter | 1-1/2 in. |
| Mounting screw spacing | 3-7/8 in. to 4 in. |
| Replaces | #2050 Full-Face SuperValve |
| Exact replacement for | Wall inlet model LR61865 |
| Wiring | Two screw connections for low voltage wire and a high voltage wire lead |
| Includes | Rough-in mounting plate with J-box, face plate, and screws |
| Trim plate | Not available |
| Made by | Hayden / Canplas / Vaculine |
| Compatibility note | AirMaster, Modern Day, SilentMaster, Flo-Master, Beam, Nutone, Electrolux, Vacuflo, Kenmore and Eureka |
| Authorized Dealer | Ace Vacuums |
When you purchase from Authorized MD Dealer Ace Vacuums, you receive:
The Full-Face Side-Opening Inlet Cover Kit for MD Central Vacuum is available online and in-store through Authorized MD Dealer Ace Vacuums.
Call 703-997-9292 (ext. 1 Fairfax, ext. 2 Leesburg).
It includes the rough-in mounting plate with J-box, face plate, and screws.
Yes. The full-size door opens 180 degrees so it can swing flush with the wall.
It replaces #2050 Full-Face SuperValve and is an exact replacement for wall inlet model LR61865.
It replaces electric inlets sold here that have two mounting screws on the top and bottom spaced 3-7/8 inches to 4 inches apart.
There are two screw connections for low voltage wire and a high voltage wire lead coming out the back to connect the home's power.
No. The face plate is not sold separately.
It is used with SuperValve electric inlet setups and the compatibility note lists many brands, including Modern Day. To confirm fit for your MD central vacuum, check your inlet type, mounting screw spacing, and existing wall inlet model if you are unsure.
No. A trim plate is not available.
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Address: 11110 Main St, Fairfax, VA 22030
Landmark: Opposite Havertys Furniture Store
Best for: Bethesda, Potomac, Arlington, NW Washington D.C.
Address: 300 Fort Evans Rd NE, Suite 104, Leesburg, VA 20176
Landmark: Next to Home Depot in Leesburg
Best for: Ashburn, Sterling, Frederick MD, Loudoun County
In-stock merchandise generally ships from our Leesburg, Virginia location within 3–5 business days. Processing time is separate from carrier transit time and is not a guaranteed delivery date. Weekends and holidays can affect timing. Special-order, backordered or unavailable items may take longer; contact us to confirm timing before purchase when a deadline matters.
Shipping options and charges are shown at checkout. After dispatch, follow the carrier's tracking updates. Weather, carrier delays, order verification and inventory confirmation may affect delivery. Inspect packages promptly and retain packaging if there is damage or an incorrect or missing item.
Eligible unused items have a 30-calendar-day return request window for refunds or exchanges, measured from delivery or in-store purchase. Return authorization is required. Final-sale exclusions, the 15% restocking fee for change-of-mind returns and shipping responsibilities are explained in our Return and Refund Policy. That policy is the governing source for return eligibility and fees.
For shipping or return help, email sales@acevacuums.com or call 703-997-9292.
Updated September 27, 2026. Request a return for an eligible unused item within 30 calendar days of delivery (or purchase for items collected in store). Eligible returns may be refunded to the original payment method or exchanged, subject to availability. The same 30-day request window applies to both refunds and exchanges; there is no separate seven-day or 15-day refund deadline.
Items must be unused, clean, complete and in their original packaging with all accessories, manuals and proof of purchase. Contact sales@acevacuums.com or 703-997-9292 before sending anything back. Include your order number, item and reason for return. We will confirm eligibility, charges and return instructions. Unapproved or cash-on-delivery returns are not accepted.
For an approved change-of-mind return, a 15% restocking fee applies to the returned merchandise price. Original shipping charges are not refundable and the customer pays return shipping. These charges do not apply to an approved return caused by our shipping error or a damaged/defective item claim. Contact us first so we can arrange the appropriate remedy and shipping instructions. Do not assume a prepaid label is included.
Air purifiers; discounted, clearance, trade-in, holiday-sale and price-matched purchases; gift cards; custom or special-order products; electrical parts; used or installed items; opened cleaning solutions; and used bags, filters, belts or other consumables are not eligible for change-of-mind returns. Other items clearly marked final sale at purchase are also excluded. An opened box alone does not disqualify an otherwise eligible unused, complete item, but consumables and cleaning solutions must remain unopened.
Inspect your order promptly and contact us as soon as you discover a problem, with your order number and photos where helpful. Keep the packaging. Change-of-mind exclusions and deadlines do not remove applicable defect, warranty, recall or statutory rights. Warranty coverage requires evaluation under the manufacturer's terms; dealer status does not guarantee free repair. Recalled products must follow the manufacturer's recall process.
After we receive and inspect the return, we will notify you of approval or the reason it cannot be accepted. Approved refunds are issued to the original payment method within 10 business days of approval; your bank may take additional time to post them. Contact us if more than 15 business days have passed since approval. Exchanges require authorization and replacement availability; any price difference and applicable charges will be explained before processing.
This policy applies to online and in-store purchases. We will honor more favorable written return terms provided with an earlier purchase. Applicable consumer rights remain unaffected. Where the European Union 14-day cancellation right applies, customers may cancel or return eligible orders within 14 days of receipt, subject to applicable legal exceptions, without giving a reason.
Parts and cleaning options for your MD installation project. Match the installed inlet or part version; wiring, pipe layout and electrical work should follow the manufacturer installation requirements.
MD accessories are matched by hose handle, wand, inlet and installed part version. Suction-only hoses cannot power electric brushes. Retractable Hide-A-Hose parts and conventional hose parts are not interchangeable.
Two 2-foot central-vacuum pipe sections. Confirm pipe and fitting dimensions; joining coupling is sold separately.
20-gauge low-voltage control wire for an inlet installation. Choose the required length; not power wiring for electric brushes.
Power-unit changeout kit with pipe sections and adapters. Match the existing pipe and power-unit connection before installation.
Compact suction-only hose for quick pickups. Fits conventional 1 7/16–1½-inch wall inlets; cannot power an electric brush.
Keep garage and car-cleaning tools separate. Check your utility valve or inlet and choose 30 ft, 50 ft or no-hose kit.
Routine care for central vacuum hoses and pipes. Follow the sheet instructions; persistent blockages need service.
For 25+ years, Ace Vacuums has filled the gap left by big-box retailers. We provide the expert repairs, warranty support, and genuine OEM parts that Amazon and Walmart simply don't offer. From free estimates to same-day service, we are your local alternative for professional home care solutions.
Conveniently serving Washington D.C. and Maryland (Montgomery & Prince George's Counties). Our showrooms are just 20 minutes from DC and 10 minutes from Tysons Corner.
Hablamos Español — Service in English & Spanish.
Serving Zip Codes: 20147, 20176, 22030, 22031, 20151, 20190, 22102, 22314, 20110, 20148 & surrounding areas. All repairs performed by certified technicians using genuine parts.