Eight various valves. .1) Matchlett Rectifying Valve Type ML-IE, 11.7 AMP@10v, oil immersion .2) Mullard TY2-125, Serial Number 4878./3 26UJ 5U4GB Miniwatt 980 .4) Electonic Comany New Jersey ELCGH-1/5 Collidge Tube, G.E./GMINNIWATT955 6x5GTscientific instrument, valves, mullard, rectyfying valve, electrons co, eimac, general electic, lamp, machlett laboratories inc., miniwatt

Valves and Valve-Gearing Author: Charles Hurst Publisher: Charles Griffen & Co Ltd Date: 1907 flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, book, valves and valve-gearing, charles hurst

This set of photos is from a leather bound album bearing the inscription "HUME RESERVOIR AUSTRALIA" plus 'The Rt. Hon. L. C. M. S. Amery, P. C., M .P.' all inscribed in gold. It was presented to The Rt. Hon. L. C. M. S. Amery, P. C., M. P, Secretary of State for Dominion Affairs on the occasion of his visit to the Hume Reservoir on 2nd November 1927. This album is of local and national significance as it documents the planning and development of the Hume Reservoir up to 1927. It was the largest water reservoir in the British Empire. The album records the pioneering engineering work that went into its construction.DEPARTMENT OF PUBLIC WORKS, N.S.W. RIVER MURRAY WATERS SCHEME. HUME RESERVOIR. 34. Needle Valves. Some of the needle valves in parts stacked ready for removal by the cableway to their positions on the outlets. There are seven of these, 7 feet 6 inches in diameter. The heaviest single part weighs about 10 tons. New South Wales. August 1927. A needle valve is a type of valve which can be used to regulate flow of a substance, usually either gas or water, through an appliance or system. The unique feature of the value is the inclusion of a small plunger, with a shape akin to a needle.hume reservoir australia, river murray waters scheme, hume reservoir construction

Mullard Limited was a British manufacturer of electronic components. The Mullard Radio Valve Co. Ltd. of Southfields, London, was founded in 1920 by Captain Stanley R. Mullard, who had previously designed valves for the Admiralty before becoming managing director of the Z Electric Lamp Co. The company soon moved to Hammersmith, London and then in 1923 to Balham, London. The head office in later years was Mullard House in Torrington Place, Bloomsbury, now part of University College London. In 1923, in order to meet the technical demands of the newly formed BBC, Mullard formed a partnership with the Dutch manufacturer Philips. The valves (US vacuum tube) produced in this period were named with the prefix PM, for Philips-Mullard, beginning with the PM3 and PM4 in 1926. Mullard finally sold all its shares to Philips in 1927. In 1928 the company introduced the first pentode valve to the British market. Mullard opened a new manufacturing plant at Mitcham, Surrey in 1929 and in late 1930s Mullard opened a new plant in Blackburn, Lancashire. By 1949 Mullard had produced a number of television sets, such as the MTS-521 and MTS-684 and in 1951 Mullard was producing the LSD series of photographic flash tubes. In the early 1980s, Mullard manufactured the SAA5050, some of the earliest teletext decoding modules made in the UK. In 1957 Philips-Mullard helped to set up the Mullard Radio Astronomy Observatory (MRAO) at the University of Cambridge. Philips continued to use the brand name "Mullard" in the UK until 1988. Mullard Research Laboratories in Redhill, Surrey then became Philips Research Laboratories. As of 2007, the Mullard brand has been revived by Sovtek, producing a variant of the ECC83 and EL34. The Z Electric Lamp Co. continued business into the 1970s operating from premises in Thornton Heath, south London, manufacturing lamps of specialised design but it closed due to the recession in the mid 1970s. Sovtek is a brand of vacuum tube owned by Mike Matthews's New Sensor Corporation and manufactured in Saratov, Russia. They are often used in guitar amplificationA box with a 'Mullard' valve for a radioTop of box : MULLARD / ELECTRONIC VALVE / Side of box; GAURANTEED ELECTRONIC / VALVE / MULLARD ( in a shield) : mullard radio valve co. ltd., london, mullard captain stanley, electronic equipment, moorabbin, bentleigh, cheltenham, early settlers

Valve RadioValve Radio Model 621household

Used to make casting moulds for the high pressure main Otway Supply System pipeline. Was used in conjunction with scour valve mould, Wf mould and valve stem mould in the 1980sUsed to manufacture spare parts for the main Otway pipeline2 wooden boxes each contain the mould for casting valves for wtaermains pipelines. Moulds lined with green coloured sealantwatermains written in black ink on outside of boxotway region, water supply, pipelines, valves

This is a book of 258 pages plus 86 pages of advertisements. The cover is dark red with an embossed shield on the front cover and gold printing on the spine. The pages contain a black and white photograph, many illustrations and diagrams and several pages of fold-out sketches. non-fictionThis is a technical book regarding valves and their maintenance in machinery. henry family, warrnambool woollen mill, valves and valve gearing

Brass Plug Valvevalves

The oxygen cylinder is a small, round-based cylinder painted in black that has been sectioned in the shoulder, neck, and valve area for teaching purposes. The sectioned valve area is wooden and has been colour-coded with red and blue paint for teaching purposes. There is a metal screw embedded into the wooden valve. The manufacturer's name, "G. BARTH & CO.", has been stamped into the back of the valve.Inscription on back of valve. "G. BARTH & CO."anaesthesia, oxygen, gas, sectioned

missing componentsmetal canister with valve, black body and white top, OXYGEN stencilled on both sides, silver valve attachment, fastened to the boxPMA 0433/2. Sticker; Keep cylinder cool/CIG/B.P. Grade/OXYGEN COMPRESSED/DO NOT ALLOW OIL OR GREASE ON VALVE/OPEN VALVE SLOWLY CLOSE AFTER USE. Sticker; USE NO OIL OR GREASE/THEY CAUSE EXPLOSIONS/OXYGENport melbourne authority (pma)

The moulds were used to make casting moulds to manufacture spare parts for the high pressure valves in the main pipeline for the Otway Water Supply System. Used in conjunction with valve stem mould, Wf mould and high pressure scour valve mould (casting) water mains. It is unknown whether these moulds are originals from the 1930's or later copies.Used in the manufacture of spare parts for the Otway Water Supply pipeline Wooden casting moulds3" SCOUR VALVEpipelines, otways

Valve has wooden (possibly mahogany) display stand.On glass: “Marconi Valve, patented, Made in England Cat.2 67.5” Detached accompanying label (partially torn): “Valve Type - CAT 2, Serial No: 575 Anode? For: 5.0 Amp Emission: 9? Operate filament A? 19.2 volts 51. ?”

Blue hard cover book of 226 pages