Verplas 150mm Round 45 Degree Bend Duct Fitting

Description

The Verplas VKC361 is a 150mm round 45° bend for the Verplas System 150 rigid duct range. It provides a gentle 45° direction change with lower airflow resistance than a full 90° elbow — ideal for angled offsets, gradual route changes, and low-resistance system designs. Made from white uPVC, it is push-fit compatible with all System 150 components.

150mm

Diameter

45°

Bend Angle

Lower ΔP

vs 90° Bend

Push-Fit

Tool-Free

White uPVC

Material

System Design Tip: Using two VKC361 45° bends in sequence achieves the equivalent of a 90° direction change with significantly lower total pressure drop than a single VKC360 90° elbow — beneficial in fan-sensitive or longer duct runs.

Key Features

45° Low-Resistance Turn

Provides a gradual 45° direction change with less airflow resistance than a 90° elbow — supporting quieter fan operation and better system efficiency.

Flexible Routing

Use singly for a gentle angular offset, or pair two bends to achieve a 90° turn with reduced pressure penalty in space-constrained or long installations.

Push-Fit Spigots

Male spigots on both ports push-fit directly to connectors, pipes, and fittings — no tools, tape, or sealant required.

White uPVC

Manufactured from white uPVC matching System 150 duct pipe and all other VKC-series fittings for a consistent finish.

System 150 Compatible

Fully interchangeable with all VKC-series 150mm System 150 components including pipes, connectors, T-pieces, and terminal fittings.

Fan & MVHR Applications

Suitable for single-room extract, dMEV and MVHR systems wherever a low-resistance direction change is needed.

Specifications

Verplas SKU	VKC361
Diameter	150 mm
Bend Angle	45°
Material	White uPVC
System	Verplas System 150 — 150mm Round Ducting

Frequently Asked Questions

When should I use 45° bends instead of a 90°?

Use 45° bends where you want to reduce system pressure drop and airflow noise at a change of direction, or where a gentler route change is required by the building geometry.

How many 45° bends equal one 90°?

Two 45° bends achieve the equivalent directional change. The combined pressure drop of two 45° bends is typically significantly lower than one 90° elbow.

Can I use these bends on the supply or extract side?

Yes — the VKC361 is suitable for use on both supply and extract duct runs in mechanical ventilation systems.

Is this compatible with flexible ducting?

The male spigot on the VKC361 will accept flexible ducting secured with a worm clip (DIY674). For rigid-to-rigid connections, push-fit directly into the connector socket.

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