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Lalizas 31345 Non-Return Valve Inline Check Valve 19mm 3/4" 25mm 1" Marine Boat
Lalizas 31345 Non-Return Valve Inline Check Valve 19mm 3/4" 25mm 1" Marine Boat
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Lalizas Non-Return Valve (31345)
Dual Size: 3/4" (19mm) or 1" (25mm) Outlet
This Lalizas premium inline non-return valve is a critical component for any marine plumbing system. Designed to permit water flow in only one direction, it prevents the annoying and potentially dangerous "back-siphoning" of water from discharge lines back into the bilge. This is particularly effective for aiding pump priming in suction lines and ensuring your bilge remains as dry as possible after the pump shuts off.
Key Features
- ✔ Dual-Sized Barbs: Fits 19mm and 25mm hoses.
- ✔ Quick-Service Design: Tool-free maintenance clip.
- ✔ Universal Fit: Compatible with manual and electric pumps.
- ✔ Flow Direction: Clearly marked for error-free install.
Technical Specs
| Manufacturer: | Lalizas |
| Part Number: | 31345 |
| Inlet/Outlet: | 19mm (3/4") or 25mm (1") |
| Material: | High-Impact Composite |
| Type: | In-line Check Valve |
Compatibility / Fitment Guide
| Application | Hose Diameter | Notes |
|---|---|---|
| Electric Bilge Pumps | 19mm (3/4") | Standard for 500-800 GPH pumps |
| Manual Bilge Pumps | 25mm (1") | Fits common hand pump discharge hoses |
| Freshwater Systems | Various | Suitable for low-pressure gravity/pump systems |
OEM Cross Reference
| Lalizas MPN: | 31345 |
| Gauci Borda Ref: | 34529 |
| SEAFLO Equivalent: | SFCV-1925-01 |
Questions & Answers
Is this a genuine original part?
Yes, this is a genuine Lalizas marine component, designed for high-performance durability in saltwater environments.
How do I know if it is compatible?
This valve is universal for any system using 19mm (3/4") or 25mm (1") ID flexible hoses. Simply match your hose size to the stepped barbs provided.
Does it restrict flow significantly?
While all check valves introduce a slight resistance, this model features a high-flow internal flapper design to minimize head loss while ensuring a tight seal against backflow.
Note: Please verify your hose inner diameter before purchasing. For 25mm (1") applications, the smaller 19mm tip can be left as-is or trimmed if maximum flow is required.
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