DAIKIN GAS TIGHT JOINT (DGT)
DGT is a non-brazed connection for Refrigerant piping. Pipes can be joined easily and quickly without brazing or using any special tools. It meets the stringent requirements in terms of safety and leak tightness while providing substantial benefits.
WHY BUY DGT?
Daikin DGT | Other Brands | |
FITTING | ✓ Only need 1 Joint for Tight seal | Requires additional accessories (i.e. inserts and joints) for stable fit |
SPECIAL TOOLS | ✓ N/A = $0 hidden costs | Require specialised crimping tools costing from S$3,000 onwards |
SEALING METHOD |
✓ Double Protection with V-seal and Dual O-Ring to effectively minimise leakage. ✓ Ensures tight seal and prevents condensation forming internally |
Single O-Ring only - |
Precision Piping Method (PPM) | ✓ Enhanced productivity with prefabrication of piping into modular form for easy connection | No such service |
CERTIFICATION | ✓ First to be Awarded 3 Ticks Excellent Rating by Singapore Green Building Council (SGBC) Certification | Not Certified under SGBC |
BENEFITS
EXCELLENT PERFORMANCE
By the unique double sealing method, the sealing performance is secured over a long period even under severe conditions such as pressure of 4.3MPa during temperature of – (minus) 45 degree C through + (plus) 130 degree C.
DURABLE FOR HIGH PRESSURE
By leverage method, the pull-out resistance is more than 4 times (17.2MPa) of the max. operating pressure.
EASY INSTALLATION
The installation is completed using low torque tightening method with just one or two turns of the nut. Regular wrenches or spanners are used without any special tools required, making installation easy even when operating space is limited.
FIRE FREE CONNECTION (SAFETY FIRST)
Neither nitrogen gas replacement nor fire prevention cure is required. The time for installation is shortened and the total cost is reduced. The installation quality is much more stable compared with a brazing method.
LESS LEAKAGE
With double sealing, made up of O-ring and V-seal, it prevents refrigerant from escaping. This eliminates the hassle of brazing at job site with labour intensive requirements.
REDUCE CONDENSATION CONCERNS
A combination of rubber packing and screwed metal body offers gas-tight and rigid connection without brazing.
MECHANISM
Item | Name | Materials | Remark |
1 | O-ring | EPDM or NBR | Prevent condensation from entering the joint |
2 | Nut | C37700 | High quality forged brass nut for tightening |
3 | Leverage corn | SUS410 | Corn shape grip on Copper pipe |
4 | Leverage ring | PE-RT | Support for Leverage corns (Item 3) |
5 | O-ring | EPDM | Secondary seal |
6 | V-seal | IIR | Primary seal (Main seal) |
7 | Main body | C37700 | High quality forged brass chassis |
8 | Indicator | Luminous marking | Fluorescent coating to ensure optimum tightness |
9 | C-shaped ring | SUS304-WPB | Tempering treatment |
SPECIFICATION
Daikin Gas Tight Joint (DGT) | ||||
Applicable Refrigerant | R32, R410A, R407C, Other HFC refrigerant | |||
Applicable Refrigerant Oil | Ether oil, Esther oil, Polyol ester oil, Polyalkylene glycol oil | |||
Maximum Pressure | 4.3Mps | |||
Minimum Pressure | -755mmHg | |||
Maximum Temperature | 130oC | |||
Minimum Temperature | -45oC | |||
Standard | ISO14903 |
PRODUCT LINE UP
Standard Joints (connecting pipes of the same size)
Figure | Model Name | Dimension | Weight/PC (g) | ||
ND | AF | L | |||
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BDGTA06 | ⌀6.4 | 19.0 | 46.2 | 106 |
BDGTA09 | ⌀9.5 | 22.2 | 51.4 | 139 | |
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BDGTA12 | ⌀12.7 | 23.8 | 82.3 | 170 |
BDGTA15 | ⌀15.9 | 29.7 | 82.8 | 236 | |
BDGTA19 | ⌀19.1 | 35.0 | 85.5 | 327 | |
BDGTA22 | ⌀22.2 | 38.0 | 93.5 | 401 | |
BDGTA28 | ⌀28.6 | 45.0 | 99.5 | 546 | |
BDGTA34 | ⌀34.9 | 51.1 | 101.5 | 686 | |
BDGTA41 NEW | ⌀41.3 | 58.3 | 103.5 | 881 |
Asymmetry Joints (connecting pipes of different sizes)
Figure | Model Name | Dimension | Weight/PC (g) | |||
ND | AF1 | AF2 | L | |||
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BDGTA1209 NEW | ⌀12.7 – ⌀9.5 | 24.0 | 22.0 | 62.4 | 158 |
BDGTA1512 NEW | ⌀15.9 – ⌀12.7 | 29.7 | 23.8 | 83.2 | 220 | |
BDGTA2219 NEW | ⌀22.2 – ⌀19.1 | 38.0 | 35.0 | 87.4 | 362 | |
BDGTA2825 NEW | ⌀28.6 – ⌀25.4 | 45.0 | 41.8 | 94.4 | 510 |
Demonstration Videos
CERTIFICATION
Project References
Project Name | Type |
Yue Ywa Chinese Products |
Commercial |
HDB Sembawang Branch |
Commercial/ Office |
Loyang Way |
Industrial |
7B Bishopsgate |
Residential |
Burger King @ T1 |
Commercial |
Blk C Fadec & MDE Room |
Commercial |
Cafeteria Phase |
Commercial |
Singtel UPS Exchange @ Bedok |
Commercial |
Singtel Bt Panjang/Jurong Exchange |
Commercial |
57 Hua Guan Avenue |
Residential |
Genting Centre |
Office |
Shell @ Bukom Project |
Industrial |
No. 2 Jurong West St.23 |
Industrial |
No. 30 Sakra View (Jurong Island) |
Industrial |
Embassy of Arab Republic of Egypt |
Commercial |
59 Yishun Industrial Park A |
Industrial |
Halliburton Project |
Industrial |
19 Astrid Hill |
Residential |
88 Lorong Gambir |
Residential |
Chinese Swimming Club |
Commercial |
Changi @ T1 |
Commercial |

Contact Us

For Accessories, Call: 6311 8687
For Accessories, Email: accessories@daikin.com.sg
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