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Mars Valves

Three-piece ball valves for certified industrial performance

Fully maintainable three-piece ball valves for process and industrial applications, including steam jacketed options for high temperature media.

SS316 / CF8M Stainless Steel

Three-Piece Body Design

In-Line Maintainable

NPT · BSP · BSPT · Flanged

1/4" to 4" size range

Steam Jacketed Options Available

Full heat-code traceability

SS316 / CF8M Stainless Steel

Three-Piece Body Design

In-Line Maintainable

NPT · BSP · BSPT · Flanged

1/4" to 4" size range

Steam Jacketed Options Available

Full heat-code traceability

Serviced in place. No pipe removal.

Mars Valves Three-Piece Ball Valves are built for applications where in-line maintenance matters — the center section can be removed for service without disturbing the surrounding pipework.

From economical general-purpose valves to high performance and steam jacketed variants for high temperature media, the range covers process and industrial fluid control end to end.

All valves are manufactured in SS316/CF8M as standard, with full heat-code material traceability provided on all components.


Product Range

Three options. Full maintainability.

Select by valve type to view full specifications, sizing and pressure ratings.

Economical 3-Piece Ball Valve
Three-Piece Ball Valve

Economical 3-Piece Ball Valve — General Purpose Fluid Control

SS316 Stainless Steel

A cost-effective three-piece ball valve for general purpose fluid control.

High Performance 3-Piece Ball Valve
Three-Piece Ball Valve

High Performance 3-Piece Ball Valve — Full Maintainability

SS316 Stainless Steel

High performance three-piece ball valve with full maintainability.

Steam Jacketed Ball Valve
Three-Piece Ball Valve

Steam Jacketed Ball Valve — High Temperature Media

CF8M Stainless Steel

Three-piece steam jacketed ball valve for high temperature media.


Why specify Mars Valves Three-Piece Ball Valves

Built for serviceability — the three-piece design means maintenance without disturbing the pipeline, across general purpose, high performance and high temperature service.

SS316/CF8M as standard — other materials on request

Center section removable for in-line maintenance

No pipe removal required for servicing

NPT, BSP, BSPT and flanged end connections

Full heat-code traceability on all components

1/4" to 4" size range

Steam jacketed option for high temperature media

Technical support from our valve engineering team


Specify your three-piece ball valve

Send us your size, pressure rating, temperature requirements and end connection. Our technical team responds to enquiries within 24 hours.

Used in: Chemical processing, Power generation, Marine and shipbuilding, General machinery and OEM