Rule 25DA35A Pump & Switch Combo, 500 GPH
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Rule 25DA35A is a 500 GPH submersible bilge pump & float switch combo designed for automatic bilge emptying.
Key Features
- Completely submersible bilge pump
- Ignition protected
- Mercury-free Rule-A-Matic float switch
- Stainless steel shaft
- High abrasion, tin-coated silicone blocked wire
- Includes black flow preventer/check valve
Product Compatibility
- Marine bilge pumping systems
- Automatic/manual bilge emptying setups (float switch activation)
Product Details
- Product: Rule 25DA35A Pump & Switch Combo, 500 GPH
- Combo includes: Rule bilge pump + Rule-A-Matic float switch
- Flow rate: 500 GPH
- Electrical system: 12V (12V kit configuration for this combo)
- Switch: Mercury-free Rule-A-Matic (35A float switch family)
- Construction/features listed: stainless steel shaft; high abrasion, tin coated silicone blocked wire; ignition protected
- Additional component: includes black flow preventer/check valve
- Variant/SKU reference: 29-25DA35A (Shopify variant SKU)
- Barcoded identifier (as provided): 29-25DA35A barcode value present in listing data
Parts Desk Insights
Best Use Case: Ideal for replacing or upgrading a 12V bilge pump setup where you want integrated automatic operation using a Rule-A-Matic float switch.
Common Issues: If the pump cycles erratically, inspect the float switch mounting position and free movement (no snagging) and confirm wiring connections are secure and dry. Also check the inlet/impeller area and the hose routing for restrictions, and verify the check valve/flow preventer is installed to support one-way flow.
Related Products & Accessories
- Browse Bilge Pumps & Switches - Browse the Bilge Pumps collection for additional Rule pumps, switches, and plumbing accessories.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.