Clack D7178-04 Bottom Spider for 14" - 16" Vessel 1.05" TMHL 14-16

The Clack D7178-04 Bottom Spider is a genuine Clack Top Mount Hub & Lateral (TMHL) bottom distributor assembly designed for 14” and 16” FRP pressure vessels using a 1.05” solvent-weld riser tube. Engineered for commercial and industrial water treatment systems, it provides reliable water collection and even distribution during both service and backwash cycles, helping to maximise media performance while preventing media loss. 

Manufactured from durable, corrosion-resistant materials, the D7178-04 is suitable for use in water softeners, activated carbon filters, multimedia filters, dealkalisers and other pressure vessel filtration systems. Its hub and lateral design ensures uniform flow through the media bed, reducing channeling and improving backwash efficiency for longer media life and consistent treatment performance. 

Designed for straightforward installation through the vessel opening, the Clack TMHL assembly delivers the dependable performance expected from genuine Clack components and is ideal for both new equipment builds and replacement applications.

Key Features

• Genuine Clack D7178-04 replacement bottom distributor
• Designed for 14”–16” FRP pressure vessels
• 1.05” (04) solvent-weld riser tube connection
• Top Mount Hub & Lateral (TMHL) design
• Promotes even water distribution and efficient backwashing
• Helps prevent media carry-over and channeling
• Corrosion-resistant construction for long service life
• Suitable for commercial and industrial water treatment systems
• Compatible with a wide range of filter media and ion exchange resins

Technical Specifications

• Part Number: D7178-04
• Product Type: Bottom Spider / Hub & Lateral Distributor Assembly
• Series: TMHL 14-16
• Vessel Size: 14”–16”
• Riser Connection: 1.05” solvent (code 04)
• Application: Water softeners, carbon filters, multimedia filters and other top-mounted valve systems