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5100 Series Low Spill Connect Under Pressure Quick Disconnect, Male Half, -16 Coupling, 1-11-1/2 Female Pipe

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Description & Features

The 5100 Series Low Spill Connect Under Pressure Quick Disconnect, Male Half, -16 Coupling, 1-11-1/2 Female Pipe is designed for efficient fluid transfer in hydraulic systems, especially suited for on-highway hydraulic wet lines, dump and refuse vehicles, and bulk liquid transfer applications.

Featuring tubular valve construction, this coupling significantly minimizes fluid loss during disconnection, enhancing safety and reducing environmental hazards. Its low air inclusion property during connection ensures optimum system performance.

With the capability to connect against pressure up to 500 psi, this quick disconnect can be utilized even under demanding conditions. The standard construction includes brass body material with steel valving components, as well as Buna-N seals, ensuring durability and reliability.

Available with wing or hex nut configurations, this product provides versatility for various mounting needs, including a steel flange option for bulkhead mounting. Suitable for temperatures as low as -40 degrees, this coupling meets rigorous industry standards.

Supplier Part Number: 5100-S2-16B

MPN: 5100-S2-16B

Specifications

A
3.55
Air Inclusion Max
0.50 Cubic_centimeter
Application
Hydraulics and fluid transfer, On-highway hydraulic wet lines, Dump and refuse vehicles, Bulk liquid transfer
B
1.76
Coupling Size
-16
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13554
End Gender 2
13555
End Size 2
1
End Type 1
UN
End Type 2
NPTF
Fluid Loss
0.35 Cubic_centimeter
Minimum Working Temperature
-40
Seal Material
Buna-N
Supplier Part Number
5100-S2-16B
Thread 1
1-11-1/2
Thread Sealant
No
Alternate Part Numbers
Alternate Part Number C1BS55, Alternate Part Number MI-00331355, Alternate Part Number MINO-00402F71709, Alternate Part Number MINO-00925X11341
Product Weight
1.31 lbs

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Product Questions & Answers (5)

Question by: Connie S on Jan 27, 2026, 10:35 AM
trying to replace a leaky plug on my wet line, is this the male half with 1-11-1/2 female pipe threads and a -16 coupling?
Answer by: Customer Support on Jan 28, 2026, 5:01 PM
This is the male half for a -16 quick disconnect, and the pipe end is 1-11-1/2 female NPTF. It’s the 5100-S2-16B plug, so it matches that thread and coupling size combination.
Question by: Norm R on Sep 20, 2025, 9:09 AM
connect under pressure, does that mean I can hook this up while the line's still live, or do I need to bleed it down first?
Answer by: Customer Support on Sep 21, 2025, 9:58 AM
Up to 500 psi, you can connect the two halves without bleeding the line down first. That's one of the main reasons this coupling gets used on dump trucks and refuse vehicles where stopping to depressurize the system just isn't practical. Beyond 500 psi you'd want to relieve pressure before connecting, but for most on-highway wet line work it handles the job without that extra step.
Question by: Donna F on Aug 29, 2025, 9:49 PM
does this thing actually connect while the system's still pressurized, or do you have to bleed it down first?
Answer by: Customer Support on Aug 31, 2025, 8:51 AM
Up to 500 psi, you can connect the halves without bleeding the system down first. That's one of the main reasons this coupling gets spec'd on dump trucks and refuse vehicles where shutting things down to swap connections just isn't practical. The tubular valve design also keeps fluid loss at disconnect to around 0.35 cubic centimeters, so you're not making a mess every time you pull it apart.
Question by: Curt A on Apr 2, 2025, 9:36 PM
got a wet line setup on a dump truck, looking for a quick disconnect that don’t make a mess when you unhook. is this one meant for that kind of work?
Answer by: Customer Support on Apr 4, 2025, 6:29 AM
For on-highway hydraulic wet lines and the kind of connect and disconnect you see on dump and refuse trucks, the 5100 Series is a solid fit. The tubular valve design is made to keep fluid loss very low on disconnect, and it also keeps air inclusion low when you hook back up, which helps the system run cleaner.
Question by: Ralph M on Apr 27, 2025, 5:20 PM
Will this connect okay against some pressure, like if there's still a bit of fluid in the line?
Answer by: Customer Support on Apr 29, 2025, 6:23 AM
This quick disconnect is designed to connect against pressure up to 500 psi, so it should work for your application.