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Seaflo Composite Non-Return Valve Straight 3/4 Inch-1 Inch

Seaflo Composite Non-Return Valve Straight 3/4 Inch-1 Inch

£11.47 GBP
£11.47 GBP
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Seaflo Straight Non-Return Valve (3/4" - 1")

SKU: INV1Z10001 | Professional Grade Marine Plumbing

This Seaflo Composite Non-Return Valve (NRV) is an essential component for marine bilge and wastewater systems. Designed to prevent the backflow of water into the bilge—which can cause "short-cycling" of automatic pumps—it ensures your system operates at peak efficiency. The straight, in-line design is ideal for installation in narrow areas or direct pipeline runs.

RELIABILITY: Manufactured from UV-stabilized glass-fiber reinforced nylon (PA6+GF) for exceptional corrosion and chemical resistance in harsh saltwater environments.

Key Features

  • ✔ Serviceable Design: Middle section unscrews for quick cleaning.
  • ✔ Dual Size Fitment: Stepped barbs for 19mm (3/4") & 25mm (1") hose.
  • ✔ Corrosion Proof: Composite polymer body won't rust or seize.
  • ✔ One-Way Flow: Reliable internal seal prevents reverse drainage.

Technical Specs

Manufacturer MPN SFINV1-Z100-01
Material PA6 + GF + POM
Length 125 mm
Body Diameter 45 mm
Hose Sizes 19mm (3/4") / 25mm (1")
Color Black & Orange

Compatibility / Fitment Guide

Application System Type Hose ID
Marine Bilge Discharge Lines 19mm or 25mm
RV / Campervan Grey Water / Sump Drainage 3/4" or 1"
Livewell / Baitwell Plumbing intake/exhaust 19mm or 25mm

OEM Cross Reference

Whale Reference LV1215 (Similar)
Rule Reference 606 Series
Sheridan Marine WA321A
Internal SKU INV1Z10001

Questions & Answers

Is this a genuine original part?

This is a premium quality Seaflo aftermarket replacement part, manufactured to meet or exceed original equipment (OE) standards for marine and RV plumbing.

How do I know if it is compatible?

Check your hose inner diameter (ID). If you are using standard 19mm (3/4") or 25mm (1") marine hose, this valve is a direct fit. Ensure the flow arrow on the body points away from the pump.

Can the internal valve be cleaned if it gets blocked?

Yes, this model features a threaded mid-connector. You can simply unscrew the body to inspect the internal seal and remove debris without having to pull the hoses off the barbs.

Note: Not recommended for use with fuels or strong acids. Designed for water drainage systems. Please verify your hose size before ordering.

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