after several times being restored from dissolution since 2008. Products Fire engines Dennis fire engines were noted, from their 1908 outset, for their use of a Gwynnes made centrifugal pump or 'turbine' as a water pump, rather than the piston pumps used by other makers. This was more complex to build than the long-established piston pumps, but had advantages in operation. Where water was supplied under pressure from a hydrant, rather than by suction from a pond, this additional pressure was boosted through the centrifugal pump, whereas a piston pump would have throttled it. Piston pumps also gave a pulsating outlet pressure which required an air-filled receiver to even this out. The Karnataka Fire and Emergency Services owns a pumper that was built by Dennis Brothers and delivered to the erstwhile Kingdom of Mysore in 1925 from England. N-Type 1905-1920s G-Type Big Four Big Six Light Four Ace F series - 1946-1970s Delta D series DS series - 1980s-1990s R series - 1976-? RS/SS series - 1978-1990s DF series DFS series TF series TSD series Sabre - 1995-2007 Rapier - 1991-? Dagger - ?-2007 Military vehicles of World War I Over 7,000 Dennis 3-Ton lorries were built for the War Department during World War I. These 3-Ton lorries could reach 55 miles per hour and climb gradients as steep as 1 in 6. Buses 1926–1967 E/EV (front-engined single decker) F/FS (bonneted single decker) G/GL (bonneted small capacity bus) H/HS/HV (front-engined double decker) Dart (bonneted small capacity bus) Arrow (front-engined single decker) Lancet/Lancet 2/Lancet 3/Lancet 4 (front-engined single decker) Lance/Lance 2/Lance 3 (front-engined double decker) Ace (front-engined small capacity bus) Mace (front-engined small capacity bus) Falcon (front-engined small capacity bus) Pike Dominant (underfloor-engined single decker) Lancet UF (underfloor-engined single decker) Pelican (underfloor-engined light-weight single decker) Loline 1977–2000 Dominator Jubilant Dart - front-engined full-size single-decker bus built in late 1970s Falcon Lancet Dragon/Condor Dorchester Domino Underframe of Duple 425 coach Javelin Dart/Dart SLF Lance/Arrow/Lance SLF Trident 2 Trident 3 R-Series Trucks Between wars Ace Max Max Major Post war Pax Horia Centaur Jubilant Stork Hefty Condor Heron Paravan Maxim Delta Refuse trucks Dennis were noted as specialist makers of refuse collection trucks, with compactors, bin lifters, tipper-body emptying and other specialised features for this market. The same market is now served by Dennis Eagle. Military vehicles of World War II Loyd Carrier Churchill Tank Light Artillery Tractor 6 x 6 'Octolat' (a