Manual Flush Valve Basics and FAQs
Moen Commercial M-Dura Manual Flush Valve Attachment to: |
Fixture: |
Wall: |
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Moen Commercial M-Dura Manual Flush Valve: |
Question 1: Does the Moen Commercial M-Dura Manual Flush Valve have the same piston as Moen M-Power?
- Answer: No, the piston in the Moen M-Dura Flush Valve is not interchangeable with the piston in the Moen M-Power Flush Valve.
Question 2: Can the Moen Commercial M-Dura Manual Flush Valves be installed with the handle on the the left or right?
- Answer: Yes, the Moen Commercial M-Dural Manual Flush Valves offer flexibility in installation allowing for the handle to be positioned on either the right or left side
Question 3: Can the Moen Commercial M-Dura Manual Flush Valves be retrofitted into a Moen Commercial Sensor Flush Valve?
- Answer: Yes, Converting a Moen Commercial M-Dura Manual Flush Valve to a Sensor-activated one requires replacing the entire valve. Moen has made it easier by creating convenient Moen Commercial Retrofit Flush Valves, see models: 8310SR35, 8310R16, 8310RDF16, 8310SR128, 8312R10, 8312SR05, 8312SR125.
Question 4: What is the pressure range the Moen Commercial M-Dura Manual Flush Valve is designed to work with?
- Answer: The Moen Commercial M-Dura Manual Flush Valve is designed to operate from 15 - 125 PSI
Question 5: What china/fixtures will the Moen Commercial M-Dura Manual Flush Valve work with?
- Answer: See chart below.
| Compatible Brands | Models |
|---|---|
| Zurn | Z5798 |
| American Standard | 6501.511 |
| American Standard | 6590.510(0) |
| American Standard | Maderra 3451 |
| Kohler | Wellworth - K-4406 (4405-1.28) |
Question 6: Can the Moen Commercial M-Dura Manual Flush Valves be retrofitted to Sloan Zurn, Delaney, American Standard and Kohler?
- Answer: Yes, Moen Commercial M-Dural Manual Flush Valves are directly compatible with standard angle stops. Moen offers multiple length inlet and outlet pipes for replacing existing fixtures. A full list of Moen's accessories/service kits can be viewed in the Moen Commercial Price catalog.
Question 7: Can you adjust or change the Flush Volume on the Moen Commercial M-Dura Manual Flush Valves?
- Answer: The flush volume on Moen Commercial M-Dura Manual Flush Valves can be adjusted by installing a different Piston and Exterior Cap Service Kit. Moen offers them in a variety of GPF options, please refer to the chart below for details.
- For instructions on replacing the Piston and Exterior Cap, see How to replace the Piston and Exterior Cap on a Manual Flush Valve.
The Flush Volume can be determined by the colored indicator on top of the housing
Manual Exposed Style Flush Valve: Closet and Closet Retrofit |
| GPF(Gallons Per Flush) | Color Indicator | Piston PN (Part Number) | Exterior Cap PN (Part Number) |
|---|---|---|---|
| 1.28 | Green | 104565 | 104592 |
| 1.6 | Red | 104564 | 104591 |
| 3.5 | Black | 104563 | 104590 |
Manual Exposed Style Flush Valve: Urinal and Urinal Retrofit |
*Watersense models 8312M05 and 8312M0125 require the flow rate (gpf) to remain the same when replacing the pistons. Pistons cannot be interchanged.
| GPF (Gallons Per Flush) | Color Indicator | Piston PN (Part Number) | Exterior Cap PN (Part Number) |
|---|---|---|---|
| 0.125 | No Color | 104568* | 104595 |
| 0.5 | Silver | 104567* | 104594 |
| 1. | Blue | 104566 | 104593 |
Question 8: Can an ADA Grab Bar be installed behind a toilet using a Moen Commercial M-Dura Manual Flush Valve?
- Answer: Yes, Moen offers a 1-1/2" Offset Tail Piece, service kit 104560 that includes an offset discharge tube specifically for use with the Moen Commercial M-Dura Manual Flush Valve. This offset tube can installed to accommodate the presence of the grab bar.
Question 9: What is the difference between the Moen Water Closets and Urinals Versions?
- Answer: The differences are found in the flush volumes, supply size and spud size.
| Details | Water Closets | Urinals |
|---|---|---|
| Flush Volumes | >1.28 GPF | < 1.0 GPF |
| Supply Size | 1 in | 3/4 in |
| Spud Size | 1-1/2 in | 1-1/4 in or 3/4 in |
Question 10: How does the Moen Commercial M-Dura Manual Flush Valve operate when you hold the Handle in the open position?
- Answer: When the handle on a Moen Commercial M-Dura Manual Flush Valve is held in the open position, the flush valve completes the cycle and shuts off.
Question 11: Why doesn't my vacuum breaker match the one included in the Service Kit 104570? Are there multiple versions of the vacuum breaker?
- Answer: Yes, there are two versions of the vacuum breaker. They are interchangeable even though they are visually different.
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Moen M-Power Vacuum Breaker, prior to 2016 |
Moen M-Dura Vacuum Breaker, 2016 to present |
Question 12: Is the Moen Commercial M-Dura Manual Flush Valve BAA (Buy American Act) compliant?
- Answer: Yes, the Moen Commercial M-Dura Manual Flush Valve is BAA compliant.
Question 13: Can you use M-Dura angle stop and discharge tubes with a Moen M-Power valve?
- Answer: Yes, M-Dura angle stops and discharge tubes are compatible with M-Power valves. However, if inlet length adapters are required, they will need a M-Power inlet service kit, see charts below.
Moen Flush Valves Prior to 2016: |
Fits Moen Flush Valves and Delaney Style Angle Stops: (Part Number - Length)
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Fits Moen Flush Valve and Sloan, Zurn Style Angle Stops: (Part Number - Length)
This O-ring (A) /Snap Ring (B) design from Sloan and Zurn are not compatible with Moen and Delaney Angle Stops.
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A, O-ring B. Snap Ring |
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Moen Flush Valves Compatibility Chart 2016 to present: (Part Number - Length) |
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Moen:
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Delaney:
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