A high-precision marine thru-hull fitting featuring a mirror-polished 304 stainless steel flange and high-strength black nylon threaded body on a white background.
Technical diagram demonstrating advanced backflow prevention using a gravity-assisted check valve mechanism across four sizes: 3/4 inch, 1-1/8 inch, 1.5 inch, and Large 1.5 inch.
Exploded view showing internal components of the thru-hull fitting including the stainless steel cap, check valve spring mechanism, sealing gasket, and barbed hose connector.
Engineering spec sheet detailing dimensions in millimeters and weights in grams for 3/4 inch (46g), 1-1/8 inch (79g), 1.5 inch (130g), and Large 1.5 inch variants.
Digital rendering showing the installation of multiple thru-hull fittings on a yacht hull just above the waterline, highlighting the check-valve mechanism.
Macro detail shot of the UV-stabilized marine-grade nylon threads and the mirror-polished stainless steel flange, highlighting corrosion-proof durability.
Cross-section and real-world installation detail showing the internal flapper valve and a reinforced hose secured with a stainless steel clamp to the barbed fitting.
Product Slideshow GIF

Thru-Hull Fitting with Check Valve

316 Stainless (3/4"-1.5") | 4 options

Regular price$6.98
Size: 3/4"

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1 unit at $6.98 USD $6.98 USD

Merchandise subtotal 0.07 kg estimated packaged weight

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1 unit / 0.07 kg packaged

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Product information

Product overview

Check dimensionsReview the selected option and product drawings.
Confirm compatibilityMatch materials, connections and installation clearance.
Plan the orderCombine compatible items before checking delivery.

AirowMarine Thru-Hull Fitting with Check Valve - 316 Stainless (3/4"-1.5") is listed in Marine Thru-Hull Fittings and is intended for the marine use described below. Review the listed dimensions, configuration and installation requirements before ordering.

Availability: In stock and available to order. Orders are prepared from current stock. Delivery timing depends on the destination and selected shipping method.

Product details

  • Product type: Marine Thru-Hull Fittings
  • Available options: Size: 3/4", 1-1/8", 1.5", Large Size 1.5"
  • Compatibility reference: Bass Boats, Pontoons, Yachts, Center Consoles

effective Bilge Protection with Gravity-Assisted Backflow Prevention

Upgrade your vessel's plumbing with the AIROW Marine Thru-Hull Fitting, engineered for strong safety and durability in harsh saltwater environments. This hybrid fitting combines a mirror-polished 316 Stainless Steel flange for aesthetic excellence and corrosion resistance with a high-strength, UV-stabilized Nylon body for structural integrity.

Key Engineering Features:

  • Integrated Check Valve: Features a gravity-assisted flapper that automatically seals when flow stops, preventing dangerous water siphoning and keeping your bilge dry.
  • Marine-Grade Materials: Constructed from S316 Stainless Steel and precision-molded Nylon to resist chemical exposure and saltwater pitting.
  • Universal Compatibility: Barbed tailpiece design helps provide a secure fit for standard marine hoses across four essential diameters.
  • Low Profile Design: The mirror-finish flange provides a clean, professional look on any hull surface.

Before ordering

  • Compare the listed dimensions with the installation area or existing part.
  • Select the correct size, model, voltage or configuration where options are offered.
  • Installation method and required hardware can vary by boat and mounting surface.

Shipping note: Shipping is calculated at checkout based on destination, package weight and service. Combining several small accessories in one order can reduce the delivery cost per item.