Rapidrop 321 PN16 Grooved Flange 4″ (100 mm)

SKU: Rapidrop-0101

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The Rapidrop 321 PN16 Grooved Flange (4″ / 100 mm) is a heavy-duty split mechanical flange adapter designed to transition directly from a grooved pipe system to a traditional PN16 flanged connection.

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Category: Fitting Accessories

Brand: Rapidrop

Description

The Rapidrop 321 PN16 Grooved Flange (4″ / 100 mm) is a premium transitional adapter engineered to connect grooved-end piping directly to flanged components like valves, pumps, and equipment utilizing a PN16 bolt pattern. Constructed from high-strength ductile iron with a corrosion-resistant red finish, this split-flange design incorporates a precision-contoured EPDM gasket that establishes a completely leak-tight seal against the pipe wall. Designed for a nominal pipe size of 4 inches (100 mm), it functions reliably in both standard and thin-walled piping systems. It supports a working pressure up to 225 PSI (1.6 MPa) for standard applications and carries UL Listing, FM Approval, and VdS certification, ensuring exceptional performance and reliability in commercial fire protection and industrial fluid networks.

Features

Seamless System Transition: Facilitates a direct, clean conversion from a mechanical grooved line to a traditional PN16 flanged connection.
Innovative Split Flange Design: Allows for easy assembly and disassembly around the pipe without cutting back adjacent system sections.
Integrated EPDM Gasket: Comes equipped with a high-performance contoured gasket that seals uniformly to prevent systemic leaks.
Heavy-Duty Construction: Forged from robust ductile iron to withstand aggressive high-pressure flows, mechanical vibrations, and environmental impacts.
No-Welding Assembly: Eliminates the hazards, labor time, and expenses related to traditional welding or threading flanges onto pipelines.

Specifications

Brand: Rapidrop
Model: 321 PN16 Grooved Flange (Split Flange Adaptor)
Size: 4 inches (100 mm)
Pipe Outer Diameter (O.D.): 114.3 mm (4.500″)
Flange Specification: PN16 Bolt Pattern
Working Pressure: 225 PSI (1.6 MPa) / Up to 300 PSI (20.7 bar) depending on specific system approvals
Material: Ductile Iron (ASTM A536)
Gasket Type: EPDM
Approvals: UL Listed, FM Approved, VdS Approved

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