Dry Break Couplings

SAS Dry Break Couplings are effortless to use, and virtually eliminate residue and waste by reducing product exposure to one of the lowest levels on the market. They are a cost-effective way to protect operators and the environment from hazardous spills, thus mitigating your company's operational risk.

Our couplers are designed to accommodate a wide range of transfer media which allows our customers to standardize on one coupler type across different transfer applications. Reducing the different types of couplings used in turn reduces costs and increases efficiencies.

While our competitors offer a range of advantages, Limbol Dynamics SAS couplers combine the most attractive features of competing couplers all within a single product. You no longer have to sacrifice one benefit to gain another.

Click here to review our pricing.

Bayonet style dry break couplings such as the SAS are the international standard for chemical and petroleum transfers

Dry Break Coupling Specifications

Materials316 Stainless-steel or Aluminum
SealsFKM / FPM O-Rings
Connection typesBSP or NPT Threads;
ANSI #150 Flanges (only for adapters)
Sizes1", 2", 3", 4" for standard use
1.5", 2.5" for special projects
Pressure rating363 PSI / 25 Bar for Stainless-steel units*;
232 PSI / 16 Bar for Aluminum units

*Maximum pressure rating for ANSI #150 flanges is 290 PSI.

Important certifications and approvals

Limbol Dynamics’ couplers also comply with ISO 9001:2008PED, ATEX and NATO STANAG 3756 sizing standard. Therefore, our products are fully compatible with TODO-Matic and Mann-tek dry disconnect / dry break couplings. Click here for a full list of our current approvals.

How do dry break couplings work (a quick video)?

How do dry break couplings work (a quick video)

Key SAS Dry Break Features

The SAS comes with a built in swivel function

Shatter-proof, highly robust coupler handle

PTFE guides prevent the coupling from locking

Saves time because hoses do not have to be drained

High quality construction ensures a long life-cycle

We let you handle more pressure


Stainless steel 2" dry disconnect couplers; maximum working pressure in PSI:

Limbol Dynamics analysis

SAS Couplings Prevent Spills

Dry Break Couplings help prevent spills during chemical or petro-chemical transfers. Because the male and female halves of the coupling are equipped with a valve, no inadvertent spills can occur. What's more, the transfer process is not only made safer but also more efficient because the hoses do not have to be drained after every transfer.

Chemical Spill - Coupling with no valve

No Spill - Coupling with valve

Frequently Asked Questions (FAQ)

Q: What is the difference between a NPT and BSP connections?

BSP and NPT are both threaded connections. They are, however, not compatible with each other. NPT connections are primarily used in the United States and Americas, whereas BSP connections are used in the remaining regions. BSP is also referred to as DIN in Central Europe. Your SAS sales representative will be able to provide guidance on what connection is appropriate for your circumstances.

Q: What material is the coupler handle made out of?

The handle of the coupler is made out of Duroplast. It is a composite thermosetting plastic that has been recognized across industries to be very reliable - it has even been used to produce car bodies. Duroplast can withstand high temperatures and impacts arising from routine usage. Discoloration after long exposure to the sun may occur but does not necessarily indicate that the handle is damaged.

Q: What approvals does the SAS have?

SAS couplers are manufactured in an ISO 9001:2008 compliant environment and have been approved by TUV Rheinland. For more information, visit our certifications section (link).

Q: What is the difference between a dry-disconnect couplers, dry-disconnect fittings, and dry-break couplings?

These names generally refer to the same item: a coupler that minimizes product emissions during the coupling process.

Q: Are the SAS couplers compatible with other bayonet style connections?

The SAS coupler is compatible with all standard NATO bayonet style connections.

Q: Are the couplers spot checked or tested individually?

Each SAS coupler is individually pressure tested at 1.5x the maximum working pressure. During and after the production cycle, the couplers are subject to a comprehensive quality control program.

Q: When should I use stainless steel vs aluminum couplers?

Aluminum couplers are generally used for standard fluid transfer applications. They should be employed at the lower end of the pressure and temperature spectrum compared to their stainless steel counterparts.

Stainless steel couplers are used for more challenging applications and / or volatile chemicals. They are also capable of withstanding higher pressures and temperatures during operation.

Q: What are the pressure / temperature ranges for aluminum and stainless-steel units?

Pressure levels:

Aluminum: 232 psi (16 bar)
Stainless steel: 363 psi (25 bar)*
*ANSI #150 Flanges have a rating of 290 psi (20 bar)

Temperature levels:

Aluminum: -67 °F to +212 °F (-55 °C to +100 °C)
Stainless steel: -67 °F to +392 °F (-55 °C to +200 °C)