1871
Our origins begin with the founding of G&J Weir.

Our origins begin with the founding of G&J Weir.

1884
Union Pumps, the other side of the family, is born in Michigan, USA.

Union Pumps, the other side of the family, is born in Michigan, USA.

Its primary focus is reciprocating pumps, but the company also develops an extensive range of centrifugal pumps.

1886
G&J Weir moves to the landmark site in Glasgow, Scotland, that we still occupy today.  

G&J Weir moves to the landmark site in Glasgow, Scotland, that we still occupy today.  

1910
Pompes Guinard, who will go on to develop the hydraulic recovery turbine, are formed.

Pompes Guinard, who will go on to develop the hydraulic recovery turbine, are formed.

1945
G&J Weir acquires Drysdale Pumps, adding a specialism in centrifugal pumps for marine applications to its engineering expertise.

G&J Weir acquires Drysdale Pumps, adding a specialism in centrifugal pumps for marine applications to its engineering expertise.

1960
David Brown Pumps, which becomes part of our DNA some forty years later, is formed. 

David Brown Pumps, which becomes part of our DNA some forty years later, is formed. 

1968
G&J Weir acquires Harland, a company specialising in centrifugal pumps, electric motors, dynamos and switchgear aimed at the power and water industries.

G&J Weir acquires Harland, a company specialising in centrifugal pumps, electric motors, dynamos and switchgear aimed at the power and water industries.

Their core Glides products can still be found in operation today: Aquaglide, Duoglide, Isoglide and Uniglide end suction split case pumps; Axiglide propeller pumps; Monoglide, Duoglide and Spiroglide centrifugal pumps. 

1970
The Weir Pumps business operating from the Cathcart, Glasgow site, continues in operation.

The Weir Pumps business operating from the Cathcart, Glasgow site, continues in operation.

It develops the innovative TWL™ integral steam turbine, water lubricated pump for nuclear applications. 

1975

Across the Atlantic, Union Pumps expands into Canada.

1987
Beginning a major period of expansion, Weir Pumps acquires the Mather & Platt business based in Manchester.

Beginning a major period of expansion, Weir Pumps acquires the Mather & Platt business based in Manchester.

This extends their reach into the oil & gas, power and energy markets through a range of water injection pumps and boiler feed pumps, as well as products such as Plurovane and Medivane. Mather & Platt also has an established range of BB2, BB3 & BB5 pumps, plus vertical seawater lift & fire pumps.

1988
WH Allen comes on board, with its vertical turbine shaft driven pumps above 12 inch diameter & steam turbines.

WH Allen comes on board, with its vertical turbine shaft driven pumps above 12 inch diameter & steam turbines.

Allen Gwynes join Weir Pumps this year too, contributing its process end-suction pumps, solids handling pumps, self-priming pumps, horizontal and vertical split casing pumps, slurry pumps, submersible pumps, chemical dosing pumps, fire-fighting pumps and gear pumps to the mix.

1992

Girdlestone come on board, bringing further expertise in the petrochemical market with end suction pumps, fuel transfer pumps and condensate extraction Pumps.

1998

Guinard and David Brown Pumps are acquired by Textron.

2006
David Brown, Guinard, and Union Pumps come together under the Union Pump brand name, offering a strong reciprocating pump range.

David Brown, Guinard, and Union Pumps come together under the Union Pump brand name, offering a strong reciprocating pump range.

2007
Clyde Pumps acquired the business and assets relating to the design, manufacture, assembly and sale of pump packages from Weir Pumps

Clyde Pumps acquired the business and assets relating to the design, manufacture, assembly and sale of pump packages from Weir Pumps

2008

The strands of history converge when ClydeUnion Pumps is formed, bringing together the heritage of Weir Pumps and Union Pumps.

This results in the development of the CUP-BB3 range and HSP products. We also update our OH2, BB2 and BB5 ranges.

2010

S&N Pumps, specialists in vertical seawater lift for auxiliary duties, become part of ClydeUnion Pumps.

2011

ClydeUnion Pumps are acquired by multinational SPX Corporation, from which SPX FLOW was spun out in 2015

2020
Celeros Flow Technology

Celeros Flow Technology

Following the sale of SPX FLOW’s Power & Energy brands, ClydeUnion Pumps become part of Celeros Flow Technology.

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