{"id":694259,"date":"2024-11-06T05:35:53","date_gmt":"2024-11-06T05:35:53","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ul-512018\/"},"modified":"2024-11-06T05:35:53","modified_gmt":"2024-11-06T05:35:53","slug":"ul-512018","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ul\/ul-512018\/","title":{"rendered":"UL 51:2018"},"content":{"rendered":"

1 Scope<\/b><\/p>\n

1.1 These requirements cover power-operated pumps and bypass valves for use in liquid transfer operations in non-refrigerated systems in installations for:<\/p>\n

\n

a)\u00a0\u00a0\u00a0\u00a0Anhydrous ammonia systems installed in accordance with the Safety Requirements for the Storage and Handling of Anhydrous Ammonia, CGA\/GAS G-2.1 (ANSI K61.1);<\/p>\n

b)\u00a0\u00a0\u00a0\u00a0Liquefied petroleum gas (LP-Gas) systems installed in accordance with the Liquefied Petroleum Gas Code, NFPA No. 58; and<\/p>\n

c)\u00a0\u00a0\u00a0\u00a0Propylene systems.<\/p>\n<\/blockquote>\n

1.2 These requirements do not cover:<\/p>\n

\n

a)\u00a0\u00a0\u00a0\u00a0Pumps or compressors intended for handling anhydrous ammonia or LP-Gas or propylene in the gaseous phase and<\/p>\n

b)\u00a0\u00a0\u00a0\u00a0Pumps, compressors or bypass valves for anhydrous ammonia, LP-Gas, or propylene for use in chemical, petro-chemical, petroleum, or utility power plants; nor pipeline or marine terminals; nor related storage facilities at such plants or terminals.<\/p>\n<\/blockquote>\n

1.3 Equipment covered by these requirements is for use with LP-Gas, propylene, or anhydrous ammonia as covered by the Standards and Codes in 1.1 and shall have a minimum service pressure rating in accordance with Table 1.1.<\/p>\n

A pump without an integral bypass valve with a higher differential pressure obtained in the Differential Pressure Test, Section 17, is permitted to have a lower minimum service pressure rating if it is marked in accordance with 25.2.<\/p>\n

<\/a><\/p>\n

Table 1.1 – Minimum service pressure for rating pumps and bypass valves<\/p>\n\n\n\n\n\n\n\n\n\n
\n

Maximum differential pressure produced when subjected to the Differential Pressure Test, Section 17<\/p>\n<\/th>\n

\n

Anhydrous ammonia and LP-Gas equipment minimum service pressure rating<\/p>\n<\/th>\n

\n

Propylene equipment minimum service pressure rating<\/p>\n<\/th>\n<\/tr>\n

\n

psig (kPa)<\/p>\n<\/th>\n

\n

psig (kPa)<\/p>\n<\/th>\n

\n

psig (kPa)<\/p>\n<\/th>\n<\/tr>\n

\n

= 100 (689) Propylene equipment only<\/p>\n<\/td>\n

\n

Not applicable<\/p>\n<\/td>\n

\n

350 (2415)<\/p>\n<\/td>\n<\/tr>\n

\n

= 125 (862)<\/p>\n<\/td>\n

\n

350 (2415)<\/p>\n<\/td>\n

\n

375 (2585)<\/p>\n<\/td>\n<\/tr>\n

\n

>125 (863) = 150 (1034)<\/p>\n<\/td>\n

\n

375 (2586)<\/p>\n<\/td>\n

\n

400 (2758)<\/p>\n<\/td>\n<\/tr>\n

\n

>150 (1034) = 200 (1379)<\/p>\n<\/td>\n

\n

400 (2758)<\/p>\n<\/td>\n

\n

425 (2930)<\/p>\n<\/td>\n<\/tr>\n

\n

= 200 (1379)<\/p>\n<\/td>\n

\n

200 + differential pressure produced (1379 + differential pressure produced)<\/p>\n<\/td>\n

\n

225 + differential pressure produced (1551 + differential pressure produced)<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Standard for Power-Operated Pumps for Anhydrous Ammonia and LP-Gas<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
UL<\/b><\/a><\/td>\n2018-10-05<\/td>\n31<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":694269,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2680],"product_tag":[],"class_list":{"0":"post-694259","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ul","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/694259","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/694269"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=694259"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=694259"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=694259"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}