Top 100 Contractors in NAICS 33391: Pump and Compressor Manufacturing, FY2021

Name: Top 100 Contractors in NAICS 33391: Pump and Compressor Manufacturing, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 62% of FY2021 NAICS 33391 contract dollars

Contract obligations: $217,906,251 Net of deobligations, by contracts coded NAICS 33391 or a code under it
Contractors: 737 Parent companies with an obligation
Largest contractor: Isometrics Inc. $75.3 million, 33.7% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Isometrics Inc. Top agencies Army (Department of the Army)	$75,323,106	33.7%	Rank history: #1 in FY2022, #29 in FY2023, #35 in FY2024 and #70 in FY2025; unchanged since FY2020.
2	Curtiss-Wright Corporation 3 awardees, including Curtiss-Wright Electro-Mechanical Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$15,041,729	6.7%	Rank history: #3 in FY2022, #2 in FY2023, #6 in FY2024 and not on the FY2025 list; up 8 since FY2020.
3	Heil Trailer International LLC Top agencies Army (Department of the Army)	$14,752,432	6.6%	Rank history: #10 in FY2022, #3 in FY2023, #5 in FY2024 and #10 in FY2025; up 3 since FY2020.
4	RIX Industries Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$8,226,475	3.7%	Rank history: #7 in FY2022, #4 in FY2023, #1 in FY2024 and #5 in FY2025; up 3 since FY2020.
5	Argo Turboserve Corporation 2 awardees Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$6,255,032	2.8%	Rank history: #6 in FY2022, #5 in FY2023, #4 in FY2024 and #7 in FY2025; up 9 since FY2020.
6	Curtiss-Wright Electro-Mechanical Corp Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$4,859,604	2.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
7	Warren Pumps LLC Through Circor Naval Solutions LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$4,081,200	1.8%	Rank history: #11 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
8	Hydraulics International, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$3,319,490	1.5%	Rank history: #35 in FY2022, #30 in FY2023, #34 in FY2024 and #17 in FY2025; down 5 since FY2020.
9	W S Darley & Co 2 awardees, including WS Darley & Co Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$3,004,134	1.3%	Rank history: #4 in FY2022, #10 in FY2023, #8 in FY2024 and #24 in FY2025; down 5 since FY2020.
10	Advanced Products Services Inc. Top agencies DLA (Defense Logistics Agency)	$2,644,972	1.2%	Rank history: #19 in FY2022, #16 in FY2023, #44 in FY2024 and not on the FY2025 list; up 16 since FY2020.
11	Supplycore LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,460,990	1.1%	Rank history: not on the FY2022–FY2025 lists; down 9 since FY2020.
12	Gardner Denver Nash LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$2,418,309	1.1%	Rank history: #5 in FY2022, #8 in FY2023 and not on the FY2024–FY2025 lists; up 29 since FY2020.
13	F3 Solutions LLC Top agencies USAF (Department of the Air Force)	$2,386,051	1.1%	Rank history: not on the FY2022 list, #21 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
14	Federal Resources Supply Company 2 awardees Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$1,988,951	0.9%	Rank history: #20 in FY2022, #27 in FY2023, #28 in FY2024 and not on the FY2025 list; up 1 since FY2020.
15	Johnson Controls Security Solutions LLC Through Johnson Controls Navy Systems, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,806,847	0.8%	Rank history: #15 in FY2022, #28 in FY2023, #50 in FY2024 and not on the FY2025 list; up 2 since FY2020.
16	RTX Corporation 3 awardees, including Hamilton Sundstrand Corporation and Goodrich Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,751,643	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
17	Meggitt PLC 3 awardees, including Meggitt Defense Systems, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$1,683,966	0.8%	Rank history: #16 in FY2022 and not on the FY2023–FY2025 lists; up 22 since FY2020.
18	Graham Corp 2 awardees, including Barber-Nichols, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,583,263	0.7%	Rank history: #36 in FY2022, #24 in FY2023, #74 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
19	Cascade Fire Equipment Co Top agencies USDA (Department of Agriculture)	$1,507,858	0.7%	Rank history: #45 in FY2022 and not on the FY2023–FY2025 lists; up 17 since FY2020.
20	Syn-Tech System, Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) IBWC (International Boundary and Water Commission U.S.-Mexico)	$1,348,729	0.6%	Rank history: #92 in FY2022 and not on the FY2023–FY2025 lists; up 18 since FY2020.
21	Compressor Engineering Corp Top agencies DLA (Defense Logistics Agency)	$1,254,694	0.6%	Rank history: #32 in FY2022, #33 in FY2023, #94 in FY2024 and #25 in FY2025; up 43 since FY2020.
22	Doosan Infracore Co., Ltd. 2 awardees, including Doosan Bobcat North America, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,254,609	0.6%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
23	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Navy (Department of the Navy)	$1,166,419	0.5%	Rank history: #14 in FY2022, #17 in FY2023, #16 in FY2024 and #13 in FY2025; up 4 since FY2020.
24	Sauer Compressors USA Inc. 2 awardees Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$1,155,456	0.5%	Rank history: #26 in FY2022, #58 in FY2023, #17 in FY2024 and #39 in FY2025; up 29 since FY2020.
25	PD Systems, LLC Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency) Navy (Department of the Navy)	$1,139,192	0.5%	Rank history: #17 in FY2022, #41 in FY2023, #90 in FY2024 and not on the FY2025 list; down 16 since FY2020.
26	Phoenix Systems Engineering Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$1,052,819	0.5%	Rank history: #34 in FY2022, #22 in FY2023, #47 in FY2024 and #23 in FY2025; down 5 since FY2020.
27	The Millennium Group Int'l LLC Top agencies Navy (Department of the Navy)	$1,046,808	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
28	Tiberian Development Group LLC Top agencies DLA (Defense Logistics Agency)	$1,031,826	0.5%	Rank history: #48 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
29	Phoenix Pumps Inc. Top agencies DOI (Department of the Interior)	$1,006,327	0.5%	Rank history: #12 in FY2022, #48 in FY2023, not on the FY2024 list and #89 in FY2025; up 8 since FY2020.
30	S I T Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$1,005,601	0.5%	Rank history: #22 in FY2022, #20 in FY2023, #11 in FY2024 and #11 in FY2025; up 2 since FY2020.
31	Ampco-Pittsburgh Corporation Through Air & Liquid Systems Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$907,613	0.4%	Rank history: not on the FY2022–FY2025 lists; down 2 since FY2020.
32	Ceco Environmental Corp Through Peerless MFG Co Top agencies DLA (Defense Logistics Agency)	$892,370	0.4%	Rank history: not on the FY2022–FY2025 lists; up 17 since FY2020.
33	Horstman Inc. Top agencies DLA (Defense Logistics Agency)	$871,520	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
34	B & H International LLC Top agencies USAF (Department of the Air Force) DOI (Department of the Interior) Army (Department of the Army)	$813,766	0.4%	Rank history: #51 in FY2022 and not on the FY2023–FY2025 lists; up 118 since FY2020.
35	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$810,258	0.4%	Rank history: #13 in FY2022, #18 in FY2023, #18 in FY2024 and #16 in FY2025; up 66 since FY2020.
36	Kool Radiator Service Inc. Top agencies DLA (Defense Logistics Agency)	$805,922	0.4%	Rank history: #52 in FY2022, #66 in FY2023, #36 in FY2024 and not on the FY2025 list; down 2 since FY2020.
37	Aerocontrolex Group, Inc. Top agencies Army (Department of the Army)	$789,345	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
38	Integrated Procurement Technologies Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$718,140	0.3%	Rank history: #24 in FY2022, not on the FY2023 list, #59 in FY2024 and #45 in FY2025; up 16 since FY2020.
39	Millennium Systems International, LLC Top agencies USAF (Department of the Air Force)	$640,035	0.3%	Rank history: #88 in FY2022, #63 in FY2023 and not on the FY2024–FY2025 lists; up 18 since FY2020.
40	Gentex Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$633,725	0.3%	Rank history: #25 in FY2022, #38 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
41	The Mallory Co. 2 awardees Top agencies USDA (Department of Agriculture) Navy (Department of the Navy) USAF (Department of the Air Force)	$603,262	0.3%	Rank history: #27 in FY2022, #90 in FY2023, #37 in FY2024 and #41 in FY2025; up 24 since FY2020.
42	Leonardo S.p.A. 2 awardees, including DRS Sustainment Systems, Inc. and Engineered Coil Company Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$588,518	0.3%	Rank history: #2 in FY2022, #1 in FY2023, #41 in FY2024 and #2 in FY2025; down 37 since FY2020.
43	Kozco Mechanical Inc. Top agencies USAF (Department of the Air Force)	$566,935	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
44	A-Dec Inc. Top agencies VA (Department of Veterans Affairs)	$517,605	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
45	Waterax Corporation Top agencies USDA (Department of Agriculture)	$515,494	0.2%	Rank history: not on the FY2022–FY2025 lists; up 215 since FY2020.
46	Fairbanks Morse LLC Top agencies Navy (Department of the Navy)	$482,317	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
47	Pankl Turbosystems GMBH Top agencies Army (Department of the Army)	$457,600	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
48	Jarvis Group Inc Through Jarvis Airfoil Inc. Top agencies USAF (Department of the Air Force)	$456,556	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
49	Sims Pump Valve Co, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$434,611	0.2%	Rank history: #99 in FY2022, #76 in FY2023, #72 in FY2024 and #93 in FY2025; up 105 since FY2020.
50	Theodor Wille Intertrade GMBH Through Atlantic Diving Supply, Inc. Top agencies DLA (Defense Logistics Agency) DOI (Department of the Interior)	$427,961	0.2%	Rank history: not on the FY2022 list, #83 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.
51	Rev-Cap Company, Inc. Top agencies DLA (Defense Logistics Agency)	$423,410	0.2%	Rank history: #69 in FY2022, #67 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
52	Parker-Hannifin Corporation 3 awardees Top agencies DLA (Defense Logistics Agency)	$421,389	0.2%	Rank history: not on the FY2022 list, #56 in FY2023, #99 in FY2024 and not on the FY2025 list; down 5 since FY2020.
53	Airtronics, LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$417,120	0.2%	Rank history: #67 in FY2022 and not on the FY2023–FY2025 lists; up 3 since FY2020.
54	Sulzer AG Through Sulzer Pump Services US Inc. Top agencies Army (Department of the Army)	$412,313	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
55	Chant Engineering Co Inc. Top agencies Navy (Department of the Navy)	$389,977	0.2%	Rank history: #74 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
56	MDM Mac Enterprises Inc. Top agencies DHS (Department of Homeland Security)	$384,553	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
57	Air Logistics Corporation Top agencies USAF (Department of the Air Force)	$381,293	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
58	Aktio Corporation Top agencies Navy (Department of the Navy)	$380,000	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
59	L3Harris Technologies, Inc. 3 awardees, including L3 Technologies, Inc. Top agencies Navy (Department of the Navy)	$377,225	0.2%	Rank history: not on the FY2022–FY2023 lists, #86 in FY2024 and not on the FY2025 list; up 243 since FY2020.
60	Empire Pump Corp Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture)	$375,183	0.2%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
61	Lockheed Martin Corporation 2 awardees Top agencies Navy (Department of the Navy)	$356,817	0.2%	Rank history: not on the FY2022 list, #52 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
62	Colfax Corporation Through IMO Industries Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$356,223	0.2%	Rank history: not on the FY2022 list, #6 in FY2023, #10 in FY2024 and not on the FY2025 list; up 57 since FY2020.
63	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$350,485	0.2%	Rank history: #28 in FY2022, #44 in FY2023, #75 in FY2024 and #21 in FY2025; up 19 since FY2020.
64	Allied Defense Industries Inc. 2 awardees, including Allied Marine Services LLC Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$347,414	0.2%	Rank history: #97 in FY2022, #54 in FY2023 and not on the FY2024–FY2025 lists; down 20 since FY2020.
65	Eaton Corporation 4 awardees, including Eaton Aerospace, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$343,473	0.2%	Rank history: not on the FY2022 list, #39 in FY2023, #33 in FY2024 and #91 in FY2025; up 184 since FY2020.
66	TNL Sales LLC Top agencies DLA (Defense Logistics Agency)	$337,058	0.2%	Rank history: not on the FY2022 list, #77 in FY2023 and not on the FY2024–FY2025 lists; up 276 since FY2020.
67	Delta Pump & Systems Inc. Top agencies DLA (Defense Logistics Agency)	$336,753	0.2%	Rank history: not on the FY2022–FY2025 lists; up 43 since FY2020.
68	Phoenix Trading Inc. Top agencies DLA (Defense Logistics Agency)	$335,896	0.2%	Rank history: not on the FY2022 list, #86 in FY2023, #43 in FY2024 and #44 in FY2025; up 159 since FY2020.
69	Aantilia LLC Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) Army (Department of the Army)	$331,232	0.1%	Rank history: #61 in FY2022, not on the FY2023 list, #85 in FY2024 and #52 in FY2025; up 88 since FY2020.
70	Pacific Consolidated Industries LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$320,678	0.1%	Rank history: #66 in FY2022, #13 in FY2023 and not on the FY2024–FY2025 lists; up 98 since FY2020.
71	Rolls-Royce Military Aero Engines Ltd Through Rolls-Royce Marine North America Inc. Top agencies Navy (Department of the Navy)	$315,727	0.1%	Rank history: not on the FY2022–FY2025 lists; down 43 since FY2020.
72	Bauer Compressors, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Commerce (Department of Commerce)	$303,910	0.1%	Rank history: #30 in FY2022, #53 in FY2023 and not on the FY2024–FY2025 lists; down 39 since FY2020.
73	Fort Peck Manufacturing Inc & West Electronics Inc Joint Venture II Top agencies Army (Department of the Army)	$302,203	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
74	Way Point Commercial Broker L.l.c Top agencies USAF (Department of the Air Force)	$300,113	0.1%	Rank history: not on the FY2022–FY2025 lists; down 12 since FY2020.
75	Breezer Holdings, LLC Top agencies DLA (Defense Logistics Agency)	$297,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
76	Trane U.S. Inc. Through Ingersoll-Rand Company Top agencies Treasury (Department of the Treasury)	$288,602	0.1%	Rank history: #85 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
77	Reiner Pump Systems Inc. Top agencies Army (Department of the Army)	$282,500	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
78	General Dynamics Corporation 3 awardees, including Electric Boat Corporation, General Dynamics Land Systems Inc. and General Dynamics European Land Systems-Bridge Systems GMBH Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$281,990	0.1%	Rank history: #91 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
79	Science Applications International Corporation Through Asrc Federal Facilities Logistics, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$274,437	0.1%	Rank history: #39 in FY2022, #88 in FY2023 and not on the FY2024–FY2025 lists; up 354 since FY2020.
80	Northwest Pump & Equipment Co. Top agencies Commerce (Department of Commerce) DOE (Department of Energy) Navy (Department of the Navy)	$272,574	0.1%	Rank history: not on the FY2022–FY2025 lists; up 67 since FY2020.
81	Interra Global Corp Top agencies USAF (Department of the Air Force)	$271,805	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
82	Carver Pump Company Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$271,252	0.1%	Rank history: #38 in FY2022, #7 in FY2023, #7 in FY2024 and #9 in FY2025; down 31 since FY2020.
83	Heico Aerospace Corporat 2 awardees, including Rocky Mountain Hydrostatics, LLC and Blue Aerospace LLC Top agencies Navy (Department of the Navy)	$266,000	0.1%	Rank history: not on the FY2022–FY2023 lists, #61 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
84	B & P Consort, Inc. Top agencies Army (Department of the Army)	$264,015	0.1%	Rank history: not on the FY2022–FY2025 lists; up 379 since FY2020.
85	Hydro Engineering Inc. Top agencies USAF (Department of the Air Force) DOI (Department of the Interior)	$246,166	0.1%	Rank history: not on the FY2022 list, #40 in FY2023, #83 in FY2024 and not on the FY2025 list; down 54 since FY2020.
86	LBS Enterprises Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$242,666	0.1%	Rank history: not on the FY2022–FY2025 lists; down 41 since FY2020.
87	Stealth Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$242,608	0.1%	Rank history: not on the FY2022–FY2025 lists; up 274 since FY2020.
88	Airgas Inc. 2 awardees, including Airgas Usa, LLC Top agencies DHA (Defense Health Agency) Smithsonian (Smithsonian Institution)	$238,720	0.1%	Rank history: #82 in FY2022 and not on the FY2023–FY2025 lists; down 14 since FY2020.
89	Coordinated Defense Supply Systems, Inc. Top agencies DLA (Defense Logistics Agency)	$236,259	0.1%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
90	Fulton Supply Company Top agencies DLA (Defense Logistics Agency)	$229,501	0.1%	Rank history: not on the FY2022–FY2025 lists; up 108 since FY2020.
91	5.11 Inc. Through Crosman Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy)	$226,557	0.1%	Rank history: not on the FY2022–FY2025 lists; up 3 since FY2020.
92	Mans Trading and Contracting Top agencies USAF (Department of the Air Force)	$226,240	0.1%	Rank history: not on the FY2022–FY2025 lists; up 233 since FY2020.
93	Clayton Associates Inc. Top agencies DLA (Defense Logistics Agency)	$225,878	0.1%	Rank history: not on the FY2022–FY2025 lists; up 151 since FY2020.
94	Megabite Electronics, Inc. Top agencies DLA (Defense Logistics Agency)	$216,330	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
95	Federal Contracts LLC Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$212,406	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
96	Air Capital Equipment, Inc. Top agencies Army (Department of the Army)	$211,270	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
97	Brandamar, Inc. Top agencies DLA (Defense Logistics Agency)	$208,065	0.1%	Rank history: not on the FY2022 list, #11 in FY2023, #77 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
98	Echelon Supply and Service, Inc. Top agencies DLA (Defense Logistics Agency)	$207,175	0.1%	Rank history: #53 in FY2022, #50 in FY2023 and not on the FY2024–FY2025 lists; up 99 since FY2020.
99	Spokane Industries Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$206,765	0.1%	Rank history: not on the FY2022–FY2025 lists; up 9 since FY2020.
100	Bagley Enterprises, Inc. Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) DOI (Department of the Interior)	$206,433	0.1%	Rank history: not on the FY2022–FY2025 lists; down 50 since FY2020.

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100 of 737 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 33391

Code	Net obligations	Largest contractor
333914 Measuring, Dispensing, and Other Pumping Equipment Manufacturing	$145,045,742	Isometrics Inc.
333912 Air and Gas Compressor Manufacturing	$56,025,094	Argo Turboserve Corporation

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $223 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2020. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2020 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 33391 contractors in FY2021?

1. Isometrics Inc. ($75.3M), 2. Curtiss-Wright Corporation ($15M), 3. Heil Trailer International LLC ($14.8M), 4. RIX Industries ($8.23M), 5. Argo Turboserve Corporation ($6.26M), 6. Curtiss-Wright Electro-Mechanical Corp ($4.86M), 7. Warren Pumps LLC ($4.08M), 8. Hydraulics International, Inc. ($3.32M), 9. W S Darley & Co ($3M), 10. Advanced Products Services Inc. ($2.64M).

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