Top 67 Contractors in PSC 3655: Gas Generating and Dispensing Systems, Fixed or Mobile, Jul 2025–Jun 2026

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 88% of PSC 3655 contract dollars from July 2025 through June 2026

Ranking facts

Contract obligations
$46,951,213 Net of deobligations, by contracts coded PSC 3655
Contractors
68 Parent companies with an obligation
Largest contractor
Linde Engineering North America LLC $24.5 million, 44.0% of obligations
Data as of

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 67 rows as CSV

Full ranking

Rank Contractor Net obligations Share Trend
1
Linde Engineering North America LLC
$24,482,000
Rank history: not on the FY2021–FY2024 lists and #2 in FY2025; new, not ranked in Jul 2024–Jun 2025.
2 $6,536,183
Rank history: #6 in FY2021, #2 in FY2022, #3 in FY2023, #1 in FY2024 and #6 in FY2025; unchanged since Jul 2024–Jun 2025.
3 $4,111,650
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
4 $3,423,075
Rank history: #4 in FY2021, not on the FY2022 list, #7 in FY2023, #12 in FY2024 and #4 in FY2025; up 1 since Jul 2024–Jun 2025.
5 $3,188,591
Rank history: not on the FY2021–FY2024 lists and #3 in FY2025; down 1 since Jul 2024–Jun 2025.
6 $2,066,800
Rank history: #16 in FY2021, #17 in FY2022, #14 in FY2023, not on the FY2024 list and #20 in FY2025; new, not ranked in Jul 2024–Jun 2025.
7
Epsilon Systems Solutions Inc.
$1,404,138
Rank history: not on the FY2021–FY2024 lists and #10 in FY2025; up 5 since Jul 2024–Jun 2025.
8 $1,349,057
Rank history: not on the FY2021–FY2023 lists, #16 in FY2024 and #12 in FY2025; up 3 since Jul 2024–Jun 2025.
9 $1,242,362
Rank history: not on the FY2021 list, #22 in FY2022, #4 in FY2023, #2 in FY2024 and #1 in FY2025; down 8 since Jul 2024–Jun 2025.
10 $1,073,428
Rank history: not on the FY2021–FY2022 lists, #33 in FY2023, not on the FY2024 list and #7 in FY2025; down 1 since Jul 2024–Jun 2025.
11
WGL Holdings Inc. Through WGL Energy Services, Inc.
$1,026,100
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
12 $924,098
Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #13 in FY2025; up 4 since Jul 2024–Jun 2025.
13 $921,659
Rank history: #20 in FY2021, #20 in FY2022, #11 in FY2023, #15 in FY2024 and #27 in FY2025; up 8 since Jul 2024–Jun 2025.
14 $478,889
Rank history: #13 in FY2021, #11 in FY2022, #8 in FY2023, #7 in FY2024 and #11 in FY2025; down 4 since Jul 2024–Jun 2025.
15 $368,575
Rank history: not on the FY2021–FY2023 lists, #14 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
16 $274,144
Rank history: #2 in FY2021, #23 in FY2022, #19 in FY2023, #18 in FY2024 and #14 in FY2025; down 3 since Jul 2024–Jun 2025.
17 $237,388
Rank history: not on the FY2021–FY2024 lists and #8 in FY2025; down 10 since Jul 2024–Jun 2025.
18 $218,900
Rank history: not on the FY2021–FY2024 lists and #16 in FY2025; new, not ranked in Jul 2024–Jun 2025.
19 $154,392
Rank history: not on the FY2021–FY2024 lists and #19 in FY2025; new, not ranked in Jul 2024–Jun 2025.
20 $148,354
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
21 $139,010
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
22 $137,919
Rank history: not on the FY2021–FY2024 lists and #23 in FY2025; new, not ranked in Jul 2024–Jun 2025.
23 $134,065
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
24
Proton Energy Systems Inc.
$120,329
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
25 $104,518
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
26 $95,517
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
27 $90,324
Rank history: not on the FY2021–FY2024 lists and #40 in FY2025; up 5 since Jul 2024–Jun 2025.
28
Cryo-Express LLC Through Cryo Associates Inc.
$87,010
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
29 $85,699
Rank history: not on the FY2021–FY2022 lists, #31 in FY2023, not on the FY2024 list and #24 in FY2025; new, not ranked in Jul 2024–Jun 2025.
30 $83,337
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
31
Mcclain Innovations Incorporated
$82,705
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
32 $72,856
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
33 $62,429
Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; new, not ranked in Jul 2024–Jun 2025.
34
Mecs, Inc.
$61,940
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
35 $61,365
Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; new, not ranked in Jul 2024–Jun 2025.
36 $60,000
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
37 $50,445
Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; new, not ranked in Jul 2024–Jun 2025.
38
Cornerstone Ondemand Inc. Through Semitorr Group, LLC
$47,593
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
39 $45,197
Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; new, not ranked in Jul 2024–Jun 2025.
40 $41,372
Rank history: not on the FY2021–FY2023 lists, #25 in FY2024 and #22 in FY2025; down 20 since Jul 2024–Jun 2025.
41
Phoenix Trading Inc.
$40,950
Rank history: not on the FY2021–FY2024 lists and #21 in FY2025; down 22 since Jul 2024–Jun 2025.
42
J.G.B. Enterprises Inc. Through Echelon Supply and Service, Inc.
$37,371
Rank history: not on the FY2021–FY2023 lists, #41 in FY2024 and #62 in FY2025; up 4 since Jul 2024–Jun 2025.
43 $34,131
Rank history: #29 in FY2021, #21 in FY2022, #27 in FY2023, #22 in FY2024 and #48 in FY2025; down 8 since Jul 2024–Jun 2025.
44 $32,480
Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; new, not ranked in Jul 2024–Jun 2025.
45 $22,956
Rank history: not on the FY2021 list, #54 in FY2022, #52 in FY2023, #42 in FY2024 and #37 in FY2025; unchanged since Jul 2024–Jun 2025.
46
Nations Gas Technologies Inc
$18,811
Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; new, not ranked in Jul 2024–Jun 2025.
47 $16,730
Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; down 21 since Jul 2024–Jun 2025.
48
Oshkosh Corporation Through Oshkosh Defense LLC
$16,502
Rank history: not on the FY2021–FY2023 lists, #30 in FY2024 and #39 in FY2025; down 15 since Jul 2024–Jun 2025.
49 $15,898
Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; down 1 since Jul 2024–Jun 2025.
50 $14,535
Rank history: #53 in FY2021, #39 in FY2022, #43 in FY2023, #45 in FY2024 and #49 in FY2025; down 7 since Jul 2024–Jun 2025.
51 $13,840
Rank history: #64 in FY2021, not on the FY2022 list, #49 in FY2023, not on the FY2024 list and #41 in FY2025; down 9 since Jul 2024–Jun 2025.
52
Native Instinct LLC
$13,386
Rank history: not on the FY2021–FY2022 lists, #21 in FY2023, not on the FY2024 list and #44 in FY2025; new, not ranked in Jul 2024–Jun 2025.
53 $13,186
Rank history: not on the FY2021 list, #24 in FY2022, not on the FY2023–FY2024 lists and #47 in FY2025; new, not ranked in Jul 2024–Jun 2025.
54 $12,000
Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; down 14 since Jul 2024–Jun 2025.
55 $8,587
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
56 $7,392
Rank history: #57 in FY2021, #53 in FY2022, not on the FY2023 list, #39 in FY2024 and #42 in FY2025; down 18 since Jul 2024–Jun 2025.
57 $6,659
Rank history: not on the FY2021 list, #50 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
58 $5,699
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
59 $5,541
Rank history: #30 in FY2021, #55 in FY2022, #18 in FY2023, #38 in FY2024 and #56 in FY2025; down 10 since Jul 2024–Jun 2025.
60 $5,096
Rank history: not on the FY2021–FY2024 lists and #54 in FY2025; new, not ranked in Jul 2024–Jun 2025.
61 $5,060
Rank history: not on the FY2021–FY2024 lists and #50 in FY2025; new, not ranked in Jul 2024–Jun 2025.
62 $4,010
Rank history: not on the FY2021–FY2023 lists, #53 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
63 $3,871
Rank history: #66 in FY2021, not on the FY2022–FY2024 lists and #57 in FY2025; new, not ranked in Jul 2024–Jun 2025.
64 $3,135
Rank history: not on the FY2021 list, #63 in FY2022, not on the FY2023 list, #50 in FY2024 and #59 in FY2025; down 11 since Jul 2024–Jun 2025.
65 $2,264
Rank history: #63 in FY2021, #60 in FY2022, #46 in FY2023, #46 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
66 $402
Rank history: not on the FY2021 list, #59 in FY2022, not on the FY2023–FY2024 lists and #63 in FY2025; new, not ranked in Jul 2024–Jun 2025.
67 $46
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
Show 42 more

67 of 68 contractors listed here. See the rest on GovTribe.

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 $55.7 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.
  • Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
  • Rank changes compare with Jul 2024–Jun 2025. "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.
  • 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 PSC 3655 contractors in Jul 2025–Jun 2026?

1. Linde Engineering North America LLC ($24.5M), 2. Treadwell Corporation (Delaware) ($6.54M), 3. Greene Machine & Manufacturing Inc. ($4.11M), 4. RTX Corporation ($3.42M), 5. Mission Systems Davenport Inc. ($3.19M), 6. Chant Engineering Co Inc. ($2.07M), 7. Epsilon Systems Solutions Inc. ($1.4M), 8. Integrated Procurement Technologies ($1.35M), 9. Atap Inc. ($1.24M), 10. Boneal, Incorporated ($1.07M).

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