Valterra 1½-Inch RV Cable Waste Valve Connection Diagram

A 1½-inch remote-operated RV waste valve lets the drain valve remain close to the plumbing while its push-pull control handle is positioned within reach. Valterra offers a 72-inch stainless-wire cable kit (TC172) and a high-density polymer version (TC172CN). These are separate products with different cable construction.

1½-inchValve size(s)
72 inchesCable length for linked complete kits
3⅛ inchesIllustrated cut-wire reference

Original Valterra cable connection and routing diagrams

Use the manufacturer's labelled drawing to identify the cable entry, coupler and remote handle mounting. The second page shows acceptable cable routing and bends. Open the PDF for a larger view.

Valve and handle connection

View cable connection drawing

Open Valterra's original PDF to enlarge the letters and hardware.

Open connection diagram (PDF)

Correct cable bends and supports

View proper cable routing

Open the second PDF page to see the approved and unsuitable examples.

Open routing diagrams (PDF)

What the diagram letters identify

These letters correspond to the actual Valterra connection illustration rather than being substitute part numbers.

Label Component What it does
C Red positioning tab Keeps the handle in its setup position until the cable is attached
D Exposed inner control wire Transmits the handle movement to the gate coupler
E Flexible cable housing Guides the inner wire from remote handle to the valve
F Coupler and Allen set screw Connects the inner wire to the gate shaft
G Collar screws Secure the cable housing at the valve body
H Handle mounting locknut Retains the cable handle at the chosen mounting panel
I Collar entry hole Receives the cable housing at the valve

For the cable installation illustrated by Valterra, the exposed inner wire is 3⅛ inches when a 1½-inch valve cable is shortened. Valterra also requires six straight inches at each end, cable support 24 inches from the valve and handle, and a 24-inch-minimum diameter for a 180-degree return. Read the kit's supplied instructions, particularly for polymer-cable variants.

Choose the correct valve or replacement body

Use the 1½-inch valve size only where the existing waste connection matches. Measure the mounting area, the valve opening and the proposed route before choosing the cable. The manufacturer instructions show how the control wire enters the cable coupler; they do not establish compatibility with every existing valve body.

Valterra part Valve size What's different
TC172 1½-inch 72-inch stainless-steel inner wire
TC172CN 1½-inch 72-inch high-density polymer extension cable
T1001PBC 1½-inch Valve body/coupler/seals only, no control cable
T1001VPM 1½-inch Manual metal-handle Bladex valve, not remotely cable-operated
The TC172 and TC172CN are complete remote-handle kit choices. T1001PBC is for replacing a body on a compatible existing control, while T1001VPM uses a manual pull handle. Do not buy a bare valve body expecting a six-foot cable to be included.

View Valterra products on NewRVParts

Photos are from the corresponding NewRVParts product listings. Compare the complete part number and whether a handle, cable, coupler or seals are included before selecting a replacement.

Valterra TC172 1-1/2 in Stainless Cable Waste Valve Kit, 6 ft — NewRVParts product photograph for TC172 / TC172CN reference
Valterra TC172 1-1/2 in Stainless Cable Waste Valve Kit, 6 ft1½-inch valve and stainless-wire 72-inch cable kit. Confirm the full kit details before ordering.
Valterra TC172CN 1-1/2 in Polymer Cable RV Waste Valve, 6 ft — NewRVParts product photograph for TC172 / TC172CN reference
Valterra TC172CN 1-1/2 in Polymer Cable RV Waste Valve, 6 ft1½-inch valve and polymer 72-inch cable kit. Confirm the full kit details before ordering.
Valterra T1001PBC 1-1/2 in Waste Valve Body with Coupler — NewRVParts product photograph for TC172 / TC172CN reference
Valterra T1001PBC 1-1/2 in Waste Valve Body with Coupler1½-inch replacement valve body with coupler and seals; no cable. Confirm the full kit details before ordering.
Valterra T1001VPM Bladex 1-1/2 in Waste Valve, Metal Handle — NewRVParts product photograph for TC172 / TC172CN reference
Valterra T1001VPM Bladex 1-1/2 in Waste Valve, Metal Handle1½-inch manual Bladex metal-handle valve; not a cable kit. Confirm the full kit details before ordering.

For full installation instructions and technical literature, visit Valterra's manufacturer downloads library. Ensure the waste system is empty and safely isolated before replacing a valve or opening the drain plumbing.

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