Drylok™ Dry Disconnect Coupler & Adaptor
Drylok™ is designed to safely transfer hazardous corrosive, volatile liquids such as acids, solvents and petrochemicals. An interlocking handle averts accidental spills by preventing uncoupling while the valve is open. And, the unit’s flat face minimizes fluid loss, further reducing exposure to risk during operation. Drylok™ is ideal for all kinds of hazardous fluids where product loss is a problem, such as high-pressure lines, high flow rates, slurries, and gases.
Features
- Available in 1”, 2” and 3” sizes
- Standard O-ring seals for longevity, low cost and ease of maintenance
- Super-Pak Adjustable packing with V-type material provides a continuous compression, emission-free seal on handle shaft (2”& 3” only).
- Available in 316 Stainless Steel, Alloy 20, Hastelloy C with NPT, BSP, ANSI Flanged, BW and SW end connections
- AAR Approved
- CRN Approved
Benefits
- One of the driest disconnects in the industry – Less than 1/2 ml of fluid loss from a 2" unit (less than .10 teaspoon).
- Unprecedented safety – Meets or exceeds all of today's stringent emission and worker safety requirements set by EPA, OSHA, and others.
- Drylok™ cannot be uncoupled while the valve is open.
- Optimum flow rate – less obstruction in easy-flow interior optimizes the flow rate in high-pressure or high-viscosity applications.
- Ease of use – Simple handle action connects valve to coupler and opens and closes the flow.
- 360° orientation ensures proper seating and alignment.
- Simplicity of repair and maintenance
- Lowest cost of maintenance
Order Guide
Technical
Click on the title below to view the technical information.
Flow Characteristics
Temperature Rating/Seal Material
Operation
Dimensions
-
5670-710n-drwg
-
5770-710n-drwg
-
5670-710a-drwg
-
5770-710a-drwg
-
5770-720n-drwg
-
5670-720a-drwg
-
5770-720a-drwg
-
5670-730n-drwg
-
5770-730n-drwg
-
5670-730a-drwg
-
5770-730a-drwg
Applications
Below is a listing of some of the applications/products that have successfully used Dryloks.
| Chemical | Application |
| Aniline | Tank Cars |
| Butadiene | Tank Cars |
| Caustic | Tank Cars |
| Ethylene Oxide (EO) | Tank Cars |
| Formaldehyde | Tank Cars |
| Glycol (deicing fluids) | Tank Trucks |
| Nitirc Acid | Tank Truck |
| Sulfuric Acid (H2SO4) | Tank Cars |
| Sulfuric Acid (spent and Refined | Tank Truck |
Videos
How to Rebuild a 2" or 3" Drylok™ Dry Disconnect
Success Story: SI Group
This success story demonstrates how the SI Group Manufacturing prefers OPW Engineered System's Drylock Disconnect Couplers and Adaptors for their outstanding safety features, with virtually no fluid loss and no exposure.
Drylok™ is designed to safely transfer hazardous corrosive, volatile liquids such as acids, solvents and petrochemicals. An interlocking handle averts accidental spills by preventing uncoupling while the valve is open. And, the unit's flat face minimizes fluid loss, further reducing exposure to risk during operation. Drylok™ is ideal for all kinds of hazardous fluids where product loss is a problem, such as high-pressure lines, high flow rates, slurries, and gases.
Drylok™ Dry Disconnect Coupler Animation
OPW's Drylok™ dry disconnect coupler is designed to safely transfer hazardous liquids. Its unique interlocking handle averts accidental spills by preventing uncoupling while the valve is open. SHOW MORE
.jpg)
.jpg)
Downloads
-
Case Study - Drylok - SI Group - Handling Phenol
-
Drylok-dry-disconnect-system-manual
Approvals
AAR
| AAR Number | Description |
| E129503 | 5670 Series Drylok Adapter – Flanged |
CRN
| CRN Number | Region | Description |
| 0H09640.21 | British Columbia | 1”,2”,3” SST |
| 0H09640.2 | Alberta | 1”,2”,3” SST |
| 0H09640.23 | Saskatchewan | 1”,2”,3” SST |
| 0H09640.24 | Manitoba | 1”,2”,3” SST |
| 0H09640.25 | Ontario | 1”,2”,3” SST |
| 0H09640.26 | Quebec | 1”,2”,3” SST |
| 0H09640.27 | New Brunswick | 1”,2”,3” SST |
| 0H09640.28 | Nova Scotia | 1”,2”,3” SST |
| 0H09640.29 | Prince Edward Island | 1”,2”,3” SST |
| 0H09640.20 | Newfoundland | 1”,2”,3” SST |
| 0H09640.2N | Nunavut | 1”,2”,3” SST |
| 0H09640.2T | Northwest Territories | 1”,2”,3” SST |
| 0H09640.2Y | Yukon Territory | 1”,2”,3” SST |
Features
- Available in 1”, 2” and 3” sizes
- Standard O-ring seals for longevity, low cost and ease of maintenance
- Super-Pak Adjustable packing with V-type material provides a continuous compression, emission-free seal on handle shaft (2”& 3” only).
- Available in 316 Stainless Steel, Alloy 20, Hastelloy C with NPT, BSP, ANSI Flanged, BW and SW end connections
- AAR Approved
- CRN Approved
Benefits
- One of the driest disconnects in the industry – Less than 1/2 ml of fluid loss from a 2" unit (less than .10 teaspoon).
- Unprecedented safety – Meets or exceeds all of today's stringent emission and worker safety requirements set by EPA, OSHA, and others.
- Drylok™ cannot be uncoupled while the valve is open.
- Optimum flow rate – less obstruction in easy-flow interior optimizes the flow rate in high-pressure or high-viscosity applications.
- Ease of use – Simple handle action connects valve to coupler and opens and closes the flow.
- 360° orientation ensures proper seating and alignment.
- Simplicity of repair and maintenance
- Lowest cost of maintenance
Order Guide
Technical
Click on the title below to view the technical information.
Flow Characteristics
Temperature Rating/Seal Material
Operation
Dimensions
-
5670-710n-drwg
-
5770-710n-drwg
-
5670-710a-drwg
-
5770-710a-drwg
-
5770-720n-drwg
-
5670-720a-drwg
-
5770-720a-drwg
-
5670-730n-drwg
-
5770-730n-drwg
-
5670-730a-drwg
-
5770-730a-drwg
Applications
Below is a listing of some of the applications/products that have successfully used Dryloks.
| Chemical | Application |
| Aniline | Tank Cars |
| Butadiene | Tank Cars |
| Caustic | Tank Cars |
| Ethylene Oxide (EO) | Tank Cars |
| Formaldehyde | Tank Cars |
| Glycol (deicing fluids) | Tank Trucks |
| Nitirc Acid | Tank Truck |
| Sulfuric Acid (H2SO4) | Tank Cars |
| Sulfuric Acid (spent and Refined | Tank Truck |
Videos
How to Rebuild a 2" or 3" Drylok™ Dry Disconnect
Success Story: SI Group
This success story demonstrates how the SI Group Manufacturing prefers OPW Engineered System's Drylock Disconnect Couplers and Adaptors for their outstanding safety features, with virtually no fluid loss and no exposure.
Drylok™ is designed to safely transfer hazardous corrosive, volatile liquids such as acids, solvents and petrochemicals. An interlocking handle averts accidental spills by preventing uncoupling while the valve is open. And, the unit's flat face minimizes fluid loss, further reducing exposure to risk during operation. Drylok™ is ideal for all kinds of hazardous fluids where product loss is a problem, such as high-pressure lines, high flow rates, slurries, and gases.
Drylok™ Dry Disconnect Coupler Animation
OPW's Drylok™ dry disconnect coupler is designed to safely transfer hazardous liquids. Its unique interlocking handle averts accidental spills by preventing uncoupling while the valve is open. SHOW MORE
Downloads
-
Case Study - Drylok - SI Group - Handling Phenol
-
Drylok-dry-disconnect-system-manual
Approvals
AAR
| AAR Number | Description |
| E129503 | 5670 Series Drylok Adapter – Flanged |
CRN
| CRN Number | Region | Description |
| 0H09640.21 | British Columbia | 1”,2”,3” SST |
| 0H09640.2 | Alberta | 1”,2”,3” SST |
| 0H09640.23 | Saskatchewan | 1”,2”,3” SST |
| 0H09640.24 | Manitoba | 1”,2”,3” SST |
| 0H09640.25 | Ontario | 1”,2”,3” SST |
| 0H09640.26 | Quebec | 1”,2”,3” SST |
| 0H09640.27 | New Brunswick | 1”,2”,3” SST |
| 0H09640.28 | Nova Scotia | 1”,2”,3” SST |
| 0H09640.29 | Prince Edward Island | 1”,2”,3” SST |
| 0H09640.20 | Newfoundland | 1”,2”,3” SST |
| 0H09640.2N | Nunavut | 1”,2”,3” SST |
| 0H09640.2T | Northwest Territories | 1”,2”,3” SST |
| 0H09640.2Y | Yukon Territory | 1”,2”,3” SST |
Need help? Contact support.
Customer Support
Reach Out to Our Customer Support Team for Prompt Assistance and Answers to Any Questions or Concerns You May Have
Technical Support
Contact Us for Technical Support on Your Projects and Resolving Any Technical Issues You Encounter
Contact a Distributor
Locate a Nearby Distributor for Replacement Parts
Product Enquiry
Product Information request form to find the right solution
OPW CORPORATE HEADQUARTERS
9393 Princeton-Glendale Road
Hamilton, Ohio, USA 45011
Copyright © 2026 OPW, A Dover Company, and its affiliated entities.