Manifold, 125mm Inlet x 8 Spigot 75mm EPP

Description

The Casavent MAN-125-75-8-V-EPP is an EPP distribution manifold that connects a 125mm inlet from the MVHR or MEV unit to eight 75mm radial semi-rigid ducts, forming the central hub of a radial ductwork system. Moulded from Expanded Polypropylene, the manifold combines insulation, light weight, and good acoustic properties with corrosion-free durability.

A typical radial installation uses one manifold on the supply side and one on the extract side of the MVHR unit, with each duct run from the manifold serving an individual room via an air valve plenum box.

125mm Inlet Diameter

8 x 75mm Duct Spigots

EPP Material

514mm Length (A)

λ 0.0038 Thermal Conductivity

-25 to +80°C Service Temperature

System Component This manifold is a system component — it connects a 125mm MVHR/MEV inlet to eight 75mm radial ducts and does not include the ducting, air handling unit, or plenum boxes. These are sold separately.

Eight-Way Distribution With eight 75mm duct spigots from a single 125mm inlet, this manifold serves up to eight individual supply or extract points from one central hub, suited to small-to-medium properties.	Insulating EPP Construction The Expanded Polypropylene body (λ = 0.0038 W/(m·K)) provides thermal insulation around the ductwork hub, reducing condensation risk in loft or ceiling void installations.
Lightweight with High Stiffness EPP construction gives the manifold a combination of low weight and strong stiffness not found in equivalent metal boxes, easing handling and installation overhead.	Good Acoustic Properties The closed-cell EPP structure offers useful sound-deadening properties, helping reduce noise transmission along the ductwork from the MVHR/MEV unit.
Corrosion-Free Unlike galvanised steel manifolds, the EPP body is immune to corrosion, giving long service life in damp loft conditions.	Flexible Fixing Options Can be installed using screws and wall plugs, or with an angle bracket and screw fixing set.

Product Overview
Brand	Casavent
Product Code	MAN-125-75-8-V-EPP
Description	Distribution Manifold, 125mm Inlet x 8 Spigot 75mm, Vertical, EPP
Orientation	Vertical
Dimensions
Inlet Diameter	125mm
Duct Spigot Diameter	75mm (x8)
Length (A)	514mm
Width (B)	320mm
Height (C)	86mm
Spigot Length (L)	36mm
Technical Data
Material	Expanded Polypropylene (EPP)
Thermal Conductivity	λ = 0.0038 W/(m·K)
Service Temperature	-25°C to +80°C
Reaction to Fire	Class E (EN 13501-1)
Microbial Resistance	Rating 1a, Method A (EN ISO 846:2019)
Air-Tightness	Suitable for ATC2 (D) air-tightness class systems (EN 17192:2018)

What does this manifold connect?

It connects a 125mm inlet from the MVHR or MEV unit to eight individual 75mm radial ducts, each running to a room's air valve plenum box.

How many manifolds does a typical system need?

A typical radial installation uses one manifold on the supply air side and a separate one on the extract air side.

What is the manifold made from and why?

Expanded Polypropylene (EPP) — insulating, lightweight with strong stiffness, good acoustic properties, and corrosion-resistant.

How is it fixed in place?

Using either screws and wall plugs, or an angle bracket and screw fixing set (sold separately).

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