P4030-7 Diverter Cartridge
Coming Soon. Updated Cartridge is on the way. Anticipated arrival mid-to-late March. Watch here for availability update(s) and announcement of arrival.
New cartridge has been in field testing in various extreme conditions since June: low 20 psi, high 75 psi, heavy mineral content, heavy lime, well water without filter, etc. with no failure to date.
Initial production quantities are limited. At this time, orders will be restricted to one per customer. If more than one is ordered, quantities in excess of one will be removed from the order.
BEFORE YOU ORDER! You MUST correctly identify your faucet. Check the label on the face of the mixer knob.
M70 Sapphire:

If you have an M70, this cartridge will fit your faucet.
Instructions
M65 Sapphire:

If you have an M65, you MUST determine which diverter knob you have:

If you have a cast knob, this cartridge will fit your M65 faucet.

If you have a solid knob, you must contact Dishmaster for assistance.
Instructions
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This cartridge is auto-off except under conditions of low or unreliable water pressure, sediment and particles in water, buildup of lime, salt, iron or other mineral deposits, etc., in which case it must be disengaged manually by the user.
Before You Replace It - Be Certain You Are Operating It Correctly
Make certain it hasn't accumulated buildup, sediment or particles
Make certain there is a clearance gap between the diverter knob and the faucet body.