Description
Overview:
The Diaphragm Plate for Patay SD45 & DD70 Hand Pump Range is a precision-formed component that supports and locates the pump diaphragm, helping to maintain an effective seal and consistent stroke. Its rigid, corrosion-resistant construction is suitable for wet environments commonly encountered with manual transfer and bilge-type pumps. Sized for a direct fit, the plate has a 71 mm outer diameter and an 8.5 mm centre bore for secure mounting within the pump body. Designed for straightforward maintenance, it replaces worn or distorted plates to restore reliable priming, flow and pressure control. Manufactured by Patay Pumps, it provides dependable compatibility with the SD45 and DD70 families, making it a practical service part for trades, marine users, site operators and facilities teams who rely on hand-operated diaphragm pumps.
Key Features:
- Precisely matched dimensions: 71 mm outer diameter and 8.5 mm centre bore for accurate seating
- Helps maintain diaphragm alignment, sealing, and consistent pump stroke
- Durable, corrosion-resistant build for long service life in wet environments
- Manufactured by Patay Pumps for assured compatibility with the SD45/DD70 range
- Supports reliable priming and steady flow during manual operation
- Easy to fit as part of routine servicing with basic hand tools
- Replaces worn or warped plates to recover pump efficiency and performance
- Stable support for the diaphragm to reduce premature wear and tear
- Suitable for regular use in maintenance kits for field or workshop repairs
Typical Applications:
Used during routine servicing or repairs of Patay hand-operated diaphragm pumps on boats, construction sites, agriculture and facilities maintenance. Ideal for water transfer, dewatering, and general utility pumping where dependable manual operation is required. Helps restore pump performance after wear, abrasion, or chemical exposure typical of harsh working conditions.
Also known as:
Diaphragm backing plate, diaphragm support disc, hand pump diaphragm plate, pump backing disc, pump support plate, diaphragm carrier, manual pump diaphragm spare, replacement backing plate for hand pumps.
Fits Models:
SD45, SD45C, DD70, DD70B
Product Specifications
| L&S Part No. | S1865 |
|---|---|
| Manufacturer | Patay Pumps |
| OEM No. | 1865 |
| Unit of Sale | 1 |
| Applications | DD70, DD70B, SD45, SD45C |
| Machine Type | Pumps |
| Fits Brands | Patay |
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