Rule 1221R Check Valve, 3/4"
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Keep your bilge discharge line working the way it should with the Rule 1221R Check Valve (3/4"). This check valve helps prevent backflow in the discharge plumbing for compatible Rule bilge pump systems.
Key Features
- Check valve for bilge discharge plumbing
- 3/4" (19mm) port size
- Designed for compatible Rule pump discharge setups
Product Compatibility
- Bilge pump discharge plumbing (check-valve installation)
- Compatible Rule bilge pump discharge systems that use a 3/4" (19mm) port check valve connection
Product Details
- Product: Rule 1221R Check Valve, 3/4"
- Brand/SKU: LNS (variant SKU: 29-1221R)
- Port size: 3/4" (19mm)
- Style/usage: Check valve for bilge pump discharge plumbing
Parts Desk Insights
Best Use Case: Use this check valve in the bilge pump discharge line to help reduce backflow when the pump shuts off—particularly useful when routing discharge to a thru-hull fitting.
Common Issues: If you’re not getting proper discharge behavior, confirm the valve orientation (inlet/outlet direction) and verify the plumbing/tubing connections match the 3/4" (19mm) port requirement. Inspect any related fittings/gaskets for tight, leak-free sealing during installation.
Related Products & Accessories
- Browse Bilge Pumps & Switches - Explore related bilge pump and switch items for a complete system.
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.