| 3/14/2018 | 848130990000 | CHECK VALVE
| 50 | Units | 1450.39 | N/A | ANLAS ANADOLU LASTIKSAN.VE TIC.A.S. |
| 3/19/2018 | 848130910000 | CHECK VALVE
| 56 | Units | 6213.91 | N/A | TYCO YANGIN KORUNUM SISTEMLERI ANONIM SIRKETI |
| 3/6/2018 | 848130990000 | CHECK VALVES
| 96 | Units | 3169.13 | N/A | ENKAR INSAAT TAAHHÜTVE TIC.LTD.STI. |
| 3/21/2018 | 848130990000 | AIRCRAFT OPERATION AND EQUIPMENT MATERIAL (CHECK AIR SUPPLY DUCT VALVE AY) VALVE
| 1 | Units | 3139 | N/A | AZUR HAVACILIK ANONIM SIRKETI |
| 3/12/2018 | 848130990000 | CHECK VALVE
| 1 | Units | 1553.4 | N/A | TÜRK HAVA YOLLARI TEKNIK ANONIM SIRKETI |
| 3/20/2024 | 848130990000 | CHECK VALVE (REVERSE PRESSURE-C) KIT | 1 | UNIT | 96 | N/A | PHINIA DELPHI TURKEY OTOMOTİV SİSTEMLERİ SANAYİ VE TİCARET ANONİM ŞİRKETİ |
| 3/8/2024 | 848130990000 | CHECK VALVE KIT/I USED IN CONSTRUCTION MACHINES | 20 | UNIT | 160 | N/A | HİDROMEK-HİDROLİK VE MEKANİK MAKİNA İMALAT SANAYİ VE TİCARET ANONİM ŞİRKETİ |
| 3/27/2024 | 848130990000 | FOR FIRE EXTINGUISHMENT SYSTEM - CHECK VALVE | 65 | UNIT | 5255 | N/A | TYCO YANGIN KORUNUM SİSTEMLERİ ANONİM ŞİRKETİ |
| 3/12/2024 | 848130990000 | CHECK VALVE (WITH ITS COMPONENTS) | 2 | UNIT | 1001 | N/A | OSS SERVİCES B.V. TÜRKİYE ŞUBESİ |
| 3/5/2024 | 848130990000 | FOR FIRE EXTINGUISHMENT SYSTEM - CHECK VALVE | 5 | UNIT | 183 | N/A | TYCO YANGIN KORUNUM SİSTEMLERİ ANONİM ŞİRKETİ |