Silvan DDP-550 Upper Housing & Pressure Switch Repair Kit (5503-UHA)

When your Silvan DDP-550 pump stops or loses pressure, the upper housing and pressure switch assembly is a common culprit. This repair kit gives you everything needed to restore the pump head and switching function — getting your sprayer back on the job without replacing the entire pump.

Key Features

• Part No: 5503-UHA
• Genuine Silvan replacement part
• Includes upper housing and pressure switch components
• Restores correct cut-in and cut-out pressure thresholds
• High-grade materials for long-term corrosion resistance
• Direct-fit replacement — no modifications required

Compatible Models

• Silvan DDP-550

When to Replace

If your pump stops or is losing pressure, the upper housing or pressure switch is a likely candidate for the reason. Replacing both components together with this kit is a cost-effective fix compared to a full pump replacement.

Helpful Resources

• Not sure if the pressure switch is the problem? Learn how to test your pressure switch
• Need just the microswitch? View the microswitch here

Part No: 5503-UHA  |  Brand: Silvan