MicroTechnology

MicroTechnology

MicroTechnology is a term given to smaller conduits and fiber used in Inside and Outside Plant Construction (ISP and OSP). MicroDucts were developed as a solution to house fiber cables that were smaller in size, but still carried significant capacity. Today, MicroCables range from 6 to 432-fiber counts. The glass fibers are the same type as those used in traditional fiber cables, only the cable design has been altered to reduce the diameter of the cable sheath and support system. MicroDucts bundled under one sheath are called FuturePath and provide multiple ducts in one structure for future expansion of networks.

MicroDucts HDPE

MicroDucts Locatable

MicroDucts Figure-8

MicroDucts PiggyBack

MicroDucts Riser

MicroDucts Plenum

FuturePath Flex

FuturePath Hybrid

FuturePath Jumbo

FuturePath Figure-8

FuturePath Armored

FuturePath Aerial

FuturePath Riser

FuturePath Plenum

BABA Compliance Fill Ratio & Product Selection Tools

Dura-Line manufactures standard High Density Polyethylene (HDPE) conduits for standard installation applications such as standard underground, as innerducts in existing conduits, or corrugated products to use in congested areas. HDPE is a flexible and resilient material. It provides superior resistance to natural or mechanical damage, and has excellent low temperature properties to handle cold weather.

Smooth Out / Ribbed In

Ribbed In / Out

HDPE Conduit - Smooth out Ribbed In

Smooth Out / Ribbed In

Our popular HDPE duct with a smooth outer wall and internal longitudinal ribs for a reduced coefficient of friction.

BABA Compliance Fill Ratio & Product Selection Tools

Dura-Line's Speciality Conduits are designed and manufactured to perform to meet application-specfic requirements such as aerial, locatable, providing superior mechanical protection, and fire resistant spaces. Customers using Specialty products leverage the unique characteristics for particular projects.

Split Corrugated

Corrugated Riser

Corrugated Plenum

Smooth-Cor Flex

Utility Grade Flex Duct

Cable-In-Conduit (CIC)

Cable-In-Conduit Communication

Cable-In-Conduit Irrigation

Cable-In-Conduit NEMA TC7

Cable-In-Conduit UL1990

Cable-In-Conduit Electric

BABA Compliance Fill Ratio & Product Selection Tools

To complete your installation, Dura-Line offers a complete line of Accessories and additional tools to make installations easier. Couplers, with properties designed for air-jetting, plow chutes, and other installations, easily join lengths of Conduits and MicroDucts. Lubricants in a variety of formulations, including high performance in cold weather, aid in cable placement. MicroAccessories include couplers, end caps, and speciality items designed to perform with MicroDucts and FuturePath. Bull-Line Pull Tape can help install both conduit and cables inside conduit.

MicroAccessories

Bull-Line Pull Tape

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Product Comparison Tool Fill Ratio & Product Selection Tools

These Applications demonstrate how conduit is used in everyday life throughout our modern world. Considered an integral part of the construction phase, the long-term return on investment on installing a flexible, easily scalable conduit network system is priceless. Multiple industries rely on clear, consistent, reliable communication technology. Learn more about how Dura-Line products are integral in providing connection.

Power & Utilities

Fiber Optic Sensing

Fiber To The Home

Multiple Dwelling Units

Rails / Tunnels

Renewable Energy

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Product Comparison Tool Fill Ratio & Product Selection Tools

Dura-Line prides itself on creating cutting edge technology that solves unique customer installation scenarios. For nearly half a century, our team of experts has been hands-on involved in product research and installation training. In the Tech Center section, we share tips and techniques intended to help and engage engineers, installation crews, and end-users.

BABA Compliance

Dura-Line Academy

Conduit Minute Blog

2025 Events Listing

Safety Data Sheets

Technology Summit

Training - MDU's

Industry Vocabulary

In search of industry specific training?

The Dura-Line Academy provides industry-leading training to design, deploy, and maintain networks flawlessly around the world.

Product Comparison Tool Fill Ratio & Product Selection Tools

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Split-Lock +

The Split-Lock + is a split coupler produced from a glass fiber reinforced nylon resin. The coupler is heat and UV stabilized, and offers excellent impact strength. It’s reusable and is ideal for temporarily coupling conduits, particularly at slack-loop locations, and also for air-assisted jetting applications. The coupler is easily assembled using a 7/16” nut driver.

The Split-Lock + is a split coupler produced from a glass fiber reinforced nylon resin. The coupler is heat and UV stabilized, and offers excellent impact strength. It’s reusable and is ideal for temporarily coupling conduits, particularly at slack-loop locations, and also for air-assisted jetting applications. The coupler is easily assembled using a 7/16” nut driver.

Features

No special tools required
Reusable – can install with cable inside
Heat and UV stabilized
Fungus and chemical resistant
Air-tight and water-tight
No ID reduction
Not recommended for plow chute
Meets UL 514B pull-out requirements
ETL listed to UL STD 514B and CSA STD C22.2 18.3
Made in the USA

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Split-Lock +

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Technical Specifications

Other accessories

Technical Specifications

Columns

Part #	Description	Nominal OD (in.)	ETL Listed	Packaging	Amount of Items/Case
20003907	1.00" Split-Lock +	1.315	✔	Case	10
20003908	1.25" Split-Lock +	1.66	✔	Case	10
20003909	1.50" Split-Lock +	1.9	✔	Case	10
20003910	2.00" Split-Lock +	2.375	✔	Case	10

Downloads

Specifications

DL_Split Lock Plus 1.24

Tech Center

Go to Tech Center

Use these digital tools to calculate Fill Ratio for MicroDucts and MicroCables, Fill Ratio for Multiple Items (OverRides), choosing a MicroDuct and MicroCable, and Selecting the correct MicroDuct for your project.

Fill Ratio & Product Selection Tools

Use these digital tools to calculate Fill Ratio for MicroDucts and MicroCables, Fill Ratio for Multiple Items (OverRides), choosing a MicroDuct and MicroCable, and Selecting the correct MicroDuct for your project.

Dura-Line brochures available for download.

Brochures

Dura-Line brochures available for download.

Sometimes the best way to learn is from someone who is hands-on! Our staff of highly trained and specialized engineers and sales team have been hands-on problem-solving in every installation scenario.

Videos

Sometimes the best way to learn is from someone who is hands-on! Our staff of highly trained and specialized engineers and sales team have been hands-on problem-solving in every installation scenario.

Other couplers

The Mor Clamp coupling is quickly and easily installed by slipping onto or wrapping around a conduit joint. The thick neoprene gasket assures a positive butt joint seal. It accommodates a variety of conduit types including HDPE, cast iron, PVC, and fiberglass. The stainless steel design offers a lightweight and economical unit which is strong and durable. Zinc plated carbon steel bolts are included for tightening the Mor Clamp coupling.

Mor Clamp

The Mor Clamp coupling is quickly and easily installed by slipping onto or wrapping around a conduit joint. The thick neoprene gasket assures a positive butt joint seal. It accommodates a variety of conduit types including HDPE, cast iron, PVC, and fiberglass. The stainless steel design offers a lightweight and economical unit which is strong and durable. Zinc plated carbon steel bolts are included for tightening the Mor Clamp coupling.

Used to join and seal length of HDPE and PVC Duct. The internal double compression seal is created as the end caps are tightened. NOTE: PVC compression couplers are not recommended for high-pressure air or gas lines, or applications requiring high pull-out resistance.

Compression Coupler

Used to join and seal length of HDPE and PVC Duct. The internal double compression seal is created as the end caps are tightened. NOTE: PVC compression couplers are not recommended for high-pressure air or gas lines, or applications requiring high pull-out resistance.

Quick, field assembly couplers or adapters to join different material types

Smooth-Cor Flex Kit

Quick, field assembly couplers or adapters to join different material types

Used with Armor Guard Conduit, the Armor Guard Kit is comprised of a Split-Lock + Coupler, a ScotchLok shield connector, and bonding braid for bonding and grounding the armored layer in the duct. This coupler arrangement is suitable for cable blowing applications.

Armor Guard Kit

Used with Armor Guard Conduit, the Armor Guard Kit is comprised of a Split-Lock + Coupler, a ScotchLok shield connector, and bonding braid for bonding and grounding the armored layer in the duct. This coupler arrangement is suitable for cable blowing applications.

Shur-Lock II is a plastic coupler designed for coupling HDPE & PVC conduit. Can also be used to couple dissimilar conduits such as HDPE to PVC, threaded or non-threaded metal conduit, or fiberglass (FRP) conduit. The coupler features stainless steel band clamps (hand tightened using a 5/16" nut driver) and locking ring. A pre-lubricated O-ring forms an air-tight seal to withstand 125 PSI on 1" - 3" sizes. Also a specialized coupler for use by electrical installers requiring ETL/UL listing. Spreader Tools are available for sizes 3", 4", and 6" to aid in the installation process.

Shur-Lock II

Shur-Lock II is a plastic coupler designed for coupling HDPE & PVC conduit. Can also be used to couple dissimilar conduits such as HDPE to PVC, threaded or non-threaded metal conduit, or fiberglass (FRP) conduit. The coupler features stainless steel band clamps (hand tightened using a 5/16" nut driver) and locking ring. A pre-lubricated O-ring forms an air-tight seal to withstand 125 PSI on 1" - 3" sizes. Also a specialized coupler for use by electrical installers requiring ETL/UL listing. Spreader Tools are available for sizes 3", 4", and 6" to aid in the installation process.

Experience the same fast and easy installation of our Push-Lock couplers now with a new, clear body design. Simply push the duct ends into the coupler for a locked and air-sealed assembly. Slightly shorter than the original Push-Lock, the Clear-Lock is ideal for pull boxes, vaults or other limited access areas. The non-metallic construction provides excellent corrosion resistance in buried or encased applications and also has desirable dielectric properties.

Clear-Lock

Experience the same fast and easy installation of our Push-Lock couplers now with a new, clear body design. Simply push the duct ends into the coupler for a locked and air-sealed assembly. Slightly shorter than the original Push-Lock, the Clear-Lock is ideal for pull boxes, vaults or other limited access areas. The non-metallic construction provides excellent corrosion resistance in buried or encased applications and also has desirable dielectric properties.

The latest in Dura-Line's coupler collection, the Redi-Lock™ is ideal for joining lengths of HDPE Sticks but can also be used with continuous length, reeled products.

Redi-Lock

The latest in Dura-Line's coupler collection, the Redi-Lock™ is ideal for joining lengths of HDPE Sticks but can also be used with continuous length, reeled products.

Reverse-threaded aluminum coupler. Tapered threads accommodate a wide range of conduit OD's within a given conduit size. Also available in a Riser/Plenum rated version.

Aluminum Threaded

Reverse-threaded aluminum coupler. Tapered threads accommodate a wide range of conduit OD's within a given conduit size. Also available in a Riser/Plenum rated version.

The Clear-Lock Couplers and PinPoint Splices in one simple package. All the advantages of the Clear-Lock couplers with water-tight connectors for the PinPoint locatable duct in one simple kit. A 2.50" kit is also available with our new Redi-Lock coupler.

PinPoint Splice Kit

The Clear-Lock Couplers and PinPoint Splices in one simple package. All the advantages of the Clear-Lock couplers with water-tight connectors for the PinPoint locatable duct in one simple kit. A 2.50" kit is also available with our new Redi-Lock coupler.

The DC-10 Split coupler is a 2-piece aluminum coupler that
provides a water-tight and air-tight connection in
buried and underground applications with a high pull-out
strength. The clam-shell design allows users to easily access
the cable after the coupler is installed. A duct holder tool is also available to aid in installation.

DC-10 Split Coupler

The DC-10 Split coupler is a 2-piece aluminum coupler that provides a water-tight and air-tight connection in buried and underground applications with a high pull-out strength. The clam-shell design allows users to easily access the cable after the coupler is installed. A duct holder tool is also available to aid in installation.

Side-Band Couplers are fully divisible compression couplers that can be used as a transition between dissimilar conduits such as HDPE to PVC, threaded & non-threaded metal conduit, or fiberglass (FRP) conduit. The dual-locking sidebands provide a high pull-out strength and maximum holding power to connect or repair conduit. Zinc-plated carbon steel bolts are included for tightening the Side-Band Coupler.

Side-Band Coupler

Side-Band Couplers are fully divisible compression couplers that can be used as a transition between dissimilar conduits such as HDPE to PVC, threaded & non-threaded metal conduit, or fiberglass (FRP) conduit. The dual-locking sidebands provide a high pull-out strength and maximum holding power to connect or repair conduit. Zinc-plated carbon steel bolts are included for tightening the Side-Band Coupler.

A low-cost push-on coupler with a molded rubber gripping insert. Can be used on HDPE, PVC, Fiberglass (FRE), and metal conduit. Transition couplers are used to join ducts with different outside diameters.

E-LOC

A low-cost push-on coupler with a molded rubber gripping insert. Can be used on HDPE, PVC, Fiberglass (FRE), and metal conduit. Transition couplers are used to join ducts with different outside diameters.

A simple coupler to install and ideal where higher pull-out strengths are needed. The molded rubber gripping insert creates a water-tight and air-tight seal, while the additional screws aid to increase the pull-out strength.

E-LOC Plus

A simple coupler to install and ideal where higher pull-out strengths are needed. The molded rubber gripping insert creates a water-tight and air-tight seal, while the additional screws aid to increase the pull-out strength.

The Double E-LOC versions are suitable for cable blowing applications and are UV resistant for aerial use.

Double E-LOC

The Double E-LOC versions are suitable for cable blowing applications and are UV resistant for aerial use.

The Mor Clamp coupling is quickly and easily installed by slipping onto or wrapping around a conduit joint. The thick neoprene gasket assures a positive butt joint seal. It accommodates a variety of conduit types including HDPE, cast iron, PVC, and fiberglass. The stainless steel design offers a lightweight and economical unit which is strong and durable. Zinc plated carbon steel bolts are included for tightening the Mor Clamp coupling.

Mor Clamp

The Mor Clamp coupling is quickly and easily installed by slipping onto or wrapping around a conduit joint. The thick neoprene gasket assures a positive butt joint seal. It accommodates a variety of conduit types including HDPE, cast iron, PVC, and fiberglass. The stainless steel design offers a lightweight and economical unit which is strong and durable. Zinc plated carbon steel bolts are included for tightening the Mor Clamp coupling.

Used to join and seal length of HDPE and PVC Duct. The internal double compression seal is created as the end caps are tightened. NOTE: PVC compression couplers are not recommended for high-pressure air or gas lines, or applications requiring high pull-out resistance.

Compression Coupler

Used to join and seal length of HDPE and PVC Duct. The internal double compression seal is created as the end caps are tightened. NOTE: PVC compression couplers are not recommended for high-pressure air or gas lines, or applications requiring high pull-out resistance.

Quick, field assembly couplers or adapters to join different material types

Smooth-Cor Flex Kit

Quick, field assembly couplers or adapters to join different material types

Used with Armor Guard Conduit, the Armor Guard Kit is comprised of a Split-Lock + Coupler, a ScotchLok shield connector, and bonding braid for bonding and grounding the armored layer in the duct. This coupler arrangement is suitable for cable blowing applications.

Armor Guard Kit

Used with Armor Guard Conduit, the Armor Guard Kit is comprised of a Split-Lock + Coupler, a ScotchLok shield connector, and bonding braid for bonding and grounding the armored layer in the duct. This coupler arrangement is suitable for cable blowing applications.

Shur-Lock II is a plastic coupler designed for coupling HDPE & PVC conduit. Can also be used to couple dissimilar conduits such as HDPE to PVC, threaded or non-threaded metal conduit, or fiberglass (FRP) conduit. The coupler features stainless steel band clamps (hand tightened using a 5/16" nut driver) and locking ring. A pre-lubricated O-ring forms an air-tight seal to withstand 125 PSI on 1" - 3" sizes. Also a specialized coupler for use by electrical installers requiring ETL/UL listing. Spreader Tools are available for sizes 3", 4", and 6" to aid in the installation process.

Shur-Lock II

Shur-Lock II is a plastic coupler designed for coupling HDPE & PVC conduit. Can also be used to couple dissimilar conduits such as HDPE to PVC, threaded or non-threaded metal conduit, or fiberglass (FRP) conduit. The coupler features stainless steel band clamps (hand tightened using a 5/16" nut driver) and locking ring. A pre-lubricated O-ring forms an air-tight seal to withstand 125 PSI on 1" - 3" sizes. Also a specialized coupler for use by electrical installers requiring ETL/UL listing. Spreader Tools are available for sizes 3", 4", and 6" to aid in the installation process.

Experience the same fast and easy installation of our Push-Lock couplers now with a new, clear body design. Simply push the duct ends into the coupler for a locked and air-sealed assembly. Slightly shorter than the original Push-Lock, the Clear-Lock is ideal for pull boxes, vaults or other limited access areas. The non-metallic construction provides excellent corrosion resistance in buried or encased applications and also has desirable dielectric properties.

Clear-Lock

Experience the same fast and easy installation of our Push-Lock couplers now with a new, clear body design. Simply push the duct ends into the coupler for a locked and air-sealed assembly. Slightly shorter than the original Push-Lock, the Clear-Lock is ideal for pull boxes, vaults or other limited access areas. The non-metallic construction provides excellent corrosion resistance in buried or encased applications and also has desirable dielectric properties.

The latest in Dura-Line's coupler collection, the Redi-Lock™ is ideal for joining lengths of HDPE Sticks but can also be used with continuous length, reeled products.

Redi-Lock

The latest in Dura-Line's coupler collection, the Redi-Lock™ is ideal for joining lengths of HDPE Sticks but can also be used with continuous length, reeled products.

Reverse-threaded aluminum coupler. Tapered threads accommodate a wide range of conduit OD's within a given conduit size. Also available in a Riser/Plenum rated version.

Aluminum Threaded

Reverse-threaded aluminum coupler. Tapered threads accommodate a wide range of conduit OD's within a given conduit size. Also available in a Riser/Plenum rated version.

The Clear-Lock Couplers and PinPoint Splices in one simple package. All the advantages of the Clear-Lock couplers with water-tight connectors for the PinPoint locatable duct in one simple kit. A 2.50" kit is also available with our new Redi-Lock coupler.

PinPoint Splice Kit

The Clear-Lock Couplers and PinPoint Splices in one simple package. All the advantages of the Clear-Lock couplers with water-tight connectors for the PinPoint locatable duct in one simple kit. A 2.50" kit is also available with our new Redi-Lock coupler.

The DC-10 Split coupler is a 2-piece aluminum coupler that
provides a water-tight and air-tight connection in
buried and underground applications with a high pull-out
strength. The clam-shell design allows users to easily access
the cable after the coupler is installed. A duct holder tool is also available to aid in installation.

DC-10 Split Coupler

The DC-10 Split coupler is a 2-piece aluminum coupler that provides a water-tight and air-tight connection in buried and underground applications with a high pull-out strength. The clam-shell design allows users to easily access the cable after the coupler is installed. A duct holder tool is also available to aid in installation.

Side-Band Couplers are fully divisible compression couplers that can be used as a transition between dissimilar conduits such as HDPE to PVC, threaded & non-threaded metal conduit, or fiberglass (FRP) conduit. The dual-locking sidebands provide a high pull-out strength and maximum holding power to connect or repair conduit. Zinc-plated carbon steel bolts are included for tightening the Side-Band Coupler.

Side-Band Coupler

Side-Band Couplers are fully divisible compression couplers that can be used as a transition between dissimilar conduits such as HDPE to PVC, threaded & non-threaded metal conduit, or fiberglass (FRP) conduit. The dual-locking sidebands provide a high pull-out strength and maximum holding power to connect or repair conduit. Zinc-plated carbon steel bolts are included for tightening the Side-Band Coupler.

A low-cost push-on coupler with a molded rubber gripping insert. Can be used on HDPE, PVC, Fiberglass (FRE), and metal conduit. Transition couplers are used to join ducts with different outside diameters.

E-LOC

A low-cost push-on coupler with a molded rubber gripping insert. Can be used on HDPE, PVC, Fiberglass (FRE), and metal conduit. Transition couplers are used to join ducts with different outside diameters.

A simple coupler to install and ideal where higher pull-out strengths are needed. The molded rubber gripping insert creates a water-tight and air-tight seal, while the additional screws aid to increase the pull-out strength.

E-LOC Plus

A simple coupler to install and ideal where higher pull-out strengths are needed. The molded rubber gripping insert creates a water-tight and air-tight seal, while the additional screws aid to increase the pull-out strength.

The Double E-LOC versions are suitable for cable blowing applications and are UV resistant for aerial use.

Double E-LOC

The Double E-LOC versions are suitable for cable blowing applications and are UV resistant for aerial use.

The Mor Clamp coupling is quickly and easily installed by slipping onto or wrapping around a conduit joint. The thick neoprene gasket assures a positive butt joint seal. It accommodates a variety of conduit types including HDPE, cast iron, PVC, and fiberglass. The stainless steel design offers a lightweight and economical unit which is strong and durable. Zinc plated carbon steel bolts are included for tightening the Mor Clamp coupling.

Mor Clamp

The Mor Clamp coupling is quickly and easily installed by slipping onto or wrapping around a conduit joint. The thick neoprene gasket assures a positive butt joint seal. It accommodates a variety of conduit types including HDPE, cast iron, PVC, and fiberglass. The stainless steel design offers a lightweight and economical unit which is strong and durable. Zinc plated carbon steel bolts are included for tightening the Mor Clamp coupling.

Used to join and seal length of HDPE and PVC Duct. The internal double compression seal is created as the end caps are tightened. NOTE: PVC compression couplers are not recommended for high-pressure air or gas lines, or applications requiring high pull-out resistance.

Compression Coupler

Used to join and seal length of HDPE and PVC Duct. The internal double compression seal is created as the end caps are tightened. NOTE: PVC compression couplers are not recommended for high-pressure air or gas lines, or applications requiring high pull-out resistance.

Quick, field assembly couplers or adapters to join different material types

Smooth-Cor Flex Kit

Quick, field assembly couplers or adapters to join different material types

Used with Armor Guard Conduit, the Armor Guard Kit is comprised of a Split-Lock + Coupler, a ScotchLok shield connector, and bonding braid for bonding and grounding the armored layer in the duct. This coupler arrangement is suitable for cable blowing applications.

Armor Guard Kit

Used with Armor Guard Conduit, the Armor Guard Kit is comprised of a Split-Lock + Coupler, a ScotchLok shield connector, and bonding braid for bonding and grounding the armored layer in the duct. This coupler arrangement is suitable for cable blowing applications.

Want a better connection with Dura-Line?

Ask a question or email us a comment! We're happy to supply additional information and would love to explore how we can be of service to you.

Want a better connection with Dura-Line?

Ask a question or email us a comment! We're happy to supply additional information and would love to explore how we can be of service to you.