List of API Standards for Valves and Equipments


American Petroleum Institute defines standards for oil and natural gas industry. There is standards for various types of valves and equipments used in oil and gas industry. This results is uniform design of equipments and parts with replaceability across various manufacturers. Here is a list of such standards.

1API 526Flanged Steel Pressure-Relief Valves
2API 560Fired Heaters for General Refinery Services
3API 594Wafer and Wafer-Lug Check Valves
4API 599Metal Plug Valves
5API 600Bolted Bonnet Steel Gate Valves for Petroleum and Natural Gas Industries
6API 602Compact Steel Gate Valves
7API 603Class 150, Cast, Corrosion-Resistant, Flanged-End Gate Valves
8API 605Large Diameter Carbon-Steel Flanges (NPS 26-60, class 75, 150, 300, 400, 600 and 900
9API 608Metal Ball Valves
10API 609Butterfly Valves: Double Flanged, Lug- and Wafer-Type
11API 610Centrifugal Pumps for Petroleum, Petrochemical and Natural Gas Industries
12API 611General Purpose Steam Turbines for Petroleum, Chemical, Gas Industry Services
13API 612Special Purpose Steam Turbines For Petroleum, Chemical, Gas Industry Services
14API 616Gas Turbines For
15API 617Axial and Centrifugal Compressors and Expander-compressors for Petroleum, Chemical and Gas Industry Services
16API 618Reciprocating Compressors
17API 619Screw Compressors
18API 620Design and Construction of Large, Welded, Low Pressure Storage Tanks
19API 621Reconditioning metallic gate, globe, and check valves.
20API 650Welded Steel Tanks for Oil Storage
21API 660Shell-and-tube Heat Exchangers
22API 661Air-Cooled Heat Exchangers for General Refinery Service
23API 662Plate Heat Exchangers for General Refinery Services
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