1.1 These requirements cover power-operated pumps and bypass valves for use in liquid transfer operations in non-refrigerated systems in installations for: a) Anhydrous 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); b) Liquefied petroleum gas (LP-Gas) systems installed in accordance with the Liquefied Petroleum Gas Code, NFPA No. 58; and c) Propylene systems.
1.2 These requirements do not cover: a) Pumps or compressors intended for handling anhydrous ammonia or LP-Gas or propylene in the gaseous phase and b) Pumps, 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.
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 and shall have a minimum service pressure rating in accordance with .
Exception: A pump without an integral bypass valve with a higher differential pressure obtained in the Differential Pressure Test, Section 20, is permitted to have a lower minimum service pressure rating if it is marked in accordance with 2.
Maximum differential pressure produced when subjected to the Differential Pressure Test, Section 20
Anhydrous ammonia and LP-Gas equipment minimum service pressure rating
Propylene equipment minimum service pressure rating
psig (kPa)
psig (kPa)
psig (kPa)
≤ 100 (689) Propylene equipment only
Not applicable
350 (2415)
≤ 125 (862)
350 (2415)
375 (2585)
>125 (863) ≤ 150 (1034)
375 (2586)
400 (2758)
>150 (1034) ≤ 200 (1379)
400 (2758)
425 (2930)
≥ 200 (1379)
200 + differential pressure produced (1379 + differential pressure produced)
225 + differential pressure produced (1551 + differential pressure produced)
1.1 These requirements cover power-operated pumps and bypass valves for use in liquid transfer operations in non-refrigerated systems in installations for:
- a) Anhydrous 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);
- b) Liquefied petroleum gas (LP-Gas) systems installed in accordance with the Liquefied Petroleum Gas Code, NFPA No. 58; and
- c) Propylene systems.
1.2 These requirements do not cover:
- a) Pumps or compressors intended for handling anhydrous ammonia or LP-Gas or propylene in the gaseous phase and
- b) Pumps, 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.
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 and shall have a minimum service pressure rating in accordance with .
Exception: A pump without an integral bypass valve with a higher differential pressure obtained in the Differential Pressure Test, Section 20, is permitted to have a lower minimum service pressure rating if it is marked in accordance with 2.
Maximum differential pressure produced when subjected to the Differential Pressure Test, Section 20
Anhydrous ammonia and LP-Gas equipment minimum service pressure rating
Propylene equipment minimum service pressure rating
psig (kPa)
psig (kPa)
psig (kPa)
≤ 100 (689) Propylene equipment only
Not applicable
350 (2415)
≤ 125 (862)
350 (2415)
375 (2585)
>125 (863) ≤ 150 (1034)
375 (2586)
400 (2758)
>150 (1034) ≤ 200 (1379)
400 (2758)
425 (2930)
≥ 200 (1379)
200 + differential pressure produced (1379 + differential pressure produced)
225 + differential pressure produced (1551 + differential pressure produced)
