22 inch Gwynnes centrifugal pump. This engine has a capacity of 23.6 litre. The 7XHR design has a single horizontal cylinder of bore, stroke, and develops at 300rpm. There is also a Ruston & Hornsby 1VTO auxiliary engine, used to provide the starting air for the larger engine and to operate a small priming pump for the Gwynnes Limited pump. The 1VTO design has a single horizontal cylinder of bore, stroke, and develops at 1000rpm. Public access Access to the site on steaming days involves driving down an unmade road and walking across a grassed area. Although essentially on one level, disabled access is limited because of the historic nature of the site. Toilets, teas and limited wheelchair access are offered. See also Prickwillow Museum Pinchbeck Engine Stretham Old Engine References External links Dogdyke Steam Drainage Station - official site limited Tourist information summary The diesel engine house The Witham 3rd IDB. Video The Dogdyke engine in steam Scoopwheel in motion Museums in Lincolnshire Preserved beam engines Grade II listed buildings in Lincolnshire Scheduled monuments in Lincolnshire Steam museums in England Infrastructure completed in 1856