There are two common ways to introduce RV plumbing antifreeze without filling the fresh-water tank. A pump-converter kit uses the RV's built-in water pump to draw antifreeze through an installed pickup hose. A hand-pump kit pushes antifreeze through a compatible exterior city-water inlet. Choose the type that suits your RV's pump access and plumbing layout.
Compare the actual replacement products
Select a photo to open the corresponding NewRVParts listing. Check the manufacturer's number and included components before ordering.
36543 — Camco RV water pump winterizing converter kitBrass inlet valve, siphon hose, fittings and thread tape
P23506LFVP — Valterra RV water pump winterizing converter kitLead-free converter valve, antifreeze pickup hose and connectors
36003 — Camco manual RV winterizing hand pump kitManual hand pump for an appropriate city-water inlet
P23507VP — Valterra exterior antifreeze hand pump kitManual hand pump with hose for exterior water connection
94230 — B&B Molders white winterizing diverter valveWhite-handle NORMAL/WINTERIZE valve, OEM 301-008-00018
94238 — B&B Molders white winterizing diverter handleWhite replacement handle only, not the valve
Compare converter kits, hand pumps and original diverter parts
| Part number | Type | Where it connects | What is included |
|---|---|---|---|
| 36543 | Camco permanent pump-converter kit | Inlet side of the RV water pump | Brass valve, antifreeze siphon hose, adapters and tape |
| P23506LFVP | Valterra permanent pump-converter kit | Inlet side of the RV water pump | Lead-free valve, pickup hose, connector and tape |
| 36003 | Camco hand-pump kit | Compatible exterior city-water inlet | Manual pump and connecting hose |
| P23507VP | Valterra hand-pump kit | Compatible exterior city-water inlet | Manual pump with hose |
| 94230 | B&B Molders winterizing diverter valve | Existing compatible RV water-management plumbing | Complete white-handled valve, not a pump |
| 94238 | B&B Molders white replacement handle | Compatible winterizing diverter valve | Handle only, not the diverter body |
Water flow and the parts involved
| Location or part | Pump converter method | Hand pump method |
|---|---|---|
| Water source | Pickup hose draws from a suitable antifreeze container | Hand pump draws from a suitable antifreeze container |
| Water inlet | Existing RV demand pump inlet and installed converter valve | Exterior city-water connection |
| Water pump | Existing 12V RV demand pump supplies pressure | Manual hand-pump supplies pressure |
| Fresh-water tank | Valve selects an alternate source instead of drawing from the tank | Does not require antifreeze to be drawn from the tank |
| Water heater | Bypass and drain the heater using its approved arrangement | Bypass and drain the heater using its approved arrangement |
| Other appliances | Follow separate winterization procedures for filters, ice makers and washers | The same separate appliance instructions apply |
| After storage | Return converter valve to fresh-water position, flush and sanitize | Remove hand-pump hose, flush and sanitize |
Original illustrated manufacturer reference
Camco's original RV plumbing bypass and winterizing equipment guide. The full PDF can be enlarged for valve identification and original winterization instructions.
Open the manufacturer's original diagram
Enlarge the PDF in your phone's viewer to see the fittings and valve positions.
Before selecting a replacement or winterizing
Pump converters and exterior hand pumps are different methods, not interchangeable connectors. Ensure a pump converter fits the installed water-pump inlet; check the exterior inlet thread before choosing a hand pump. Use only antifreeze approved for RV drinking-water plumbing, follow the RV's own winterization procedure, protect the water heater and separate appliances, and flush the system before returning it to use. Do not run the RV demand pump dry.