3/4" Inline Non-Return Valve
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You have 30 days to request a return. All sale items are final sale.
Keep your pump system primed and help prevent unwanted backflow with this 3/4" inline non-return valve. Designed for straightforward in-line installation on suction or discharge lines, it works with both manual and electric pumps.
Key Features
- Simple way to maintain prime in a suction or discharge line
- Helps stop backflow when the pump is turned off
- Designed to fit in-line
- Works with manual or electric pumps
- Whale inline non-return valve for 3/4" hose plumbing
Intended Use
- Suction and discharge line applications for marine plumbing systems
- Pump setups that benefit from improved priming and backflow prevention (manual or electric pumps)
Product Details
- • Part type: Inline non-return (check) valve
- • Size: 3/4" inline non-return valve
- • SKU: 698-LV1219
- • Hose: 3/4" (input) to 3/4" or 1" (discharge)
- • Description: Simple way to maintain prime in a suction or discharge line; designed to fit in-line; use with manual or electric pumps
Parts Desk Insights
Best Use Case: Use this inline valve in a suction or discharge run where you want to help maintain prime and reduce backflow when the pump is not running.
Common Issues: If flow seems inconsistent after installation, double-check that the valve is installed in the correct direction for in-line flow on your diagram, and confirm hose sizing at both inlet and outlet.
Related Products & Accessories
- Browse valves and strainers - Find additional Whale valves and related plumbing fittings in the Valves & Strainers collection.
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.