A compact, modulating, water flow, regulating valve for use on water cooled refrigerant condensers, equipped with brass body, external power element and 2 foot capillary line, calibrated for Freon 12 and 22, operates on refrigerant system head pressure to minimize water consumption, adjusting water flow to meet the needs of the system without overrun and wastage, Model 2300, Penn Controls, 1955.<\/p>\n\n\n\n
Features:<\/strong> Technical Significance:<\/strong> Industrial Significance:<\/strong> A compact, modulating, water flow, regulating valve for use on water cooled refrigerant condensers, equipped with brass body, external power element and 2 foot capillary line, calibrated for Freon 12 and 22, operates on refrigerant system head pressure to minimize water consumption, adjusting water flow to meet the needs of the system without overrun and wastage, Model 2300, Penn Controls, 1955.<\/p>","protected":false},"author":1,"featured_media":20815,"comment_status":"closed","ping_status":"closed","template":"","cpt_portfolio_group":[97,199],"class_list":["post-20814","cpt_portfolio","type-cpt_portfolio","status-publish","has-post-thumbnail","hentry","cpt_portfolio_group-commercial","cpt_portfolio_group-refrigeration"],"yoast_head":"\n
\u2013 Eexternal, replaceable power element and capillary line<\/p>\n\n\n\n
\u2013 It was the mid 20th century, a period before water conservation was a matter of wide spread public interest and concern. Yet water costs were escalating in many urban centres, where water metering had been introduced \u2013 thus making water conservation much more a matter of economics than an essential and mandatory conservation practice.<\/p>\n\n\n\n
\u2013 Many early commercial refrigeration applications in dairies, food stores and confectioneries, were water-cooled systems. More efficient than air cooling the practice prevailed through out much of the 20th century, where the cost of water made it an affordable condensing medium.
\u2013 In larger and multiple installations involving a number of condensing units a water tower would be used allowing the water to be evaporatively cooled and recycled.
\u2013 Air cooling became increasingly popular in the latter part of the 20th century, with water conservation an ever increasing public issue, and with the development of large remote, multiple pass air condensers and head pressure control devices [See item ID # 195]<\/p>","protected":false},"excerpt":{"rendered":"