Description

Stainless Press Coupling Without Stop

Merit Stainless Press Couplings Without Stop are designed to join compatible Schedule 5 or Schedule 10 stainless steel pipe using a press connection while allowing the fitting to slide along the pipe during installation. The no-stop configuration is especially useful for repair work and situations where the coupling must be positioned over an existing pipe joint.

Merit Stainless Steel Press Fittings are designed for use with Type 304/304L or 316/316L stainless steel pipe conforming to ASTM A-312. The stated working pressure range is from full vacuum to 300 PSI (20.7 bar) on Schedule 5 and Schedule 10 stainless steel pipe.

Product Highlights

Stainless steel press coupling
No internal stop
Allows coupling to slide along compatible pipe during installation
Useful for repairs and in-place piping connections
Designed for Schedule 5 and Schedule 10 stainless steel pipe
Compatible with Type 304/304L stainless steel pipe
Compatible with Type 316/316L stainless steel pipe
Designed for ASTM A-312 stainless steel pipe
Working pressure range from full vacuum to 300 PSI
Maximum stated working pressure: 300 PSI / 20.7 bar
Press-connect installation
No threaded pipe joint required
No welding required for the fitting connection

Technical Specifications

Product Type	Press Coupling Without Stop
Material	Stainless Steel
Connection Type	Press
Configuration	Straight Coupling Without Internal Stop
Compatible Pipe Material	304/304L or 316/316L Stainless Steel
Compatible Pipe Schedule	Schedule 5 or Schedule 10
Pipe Standard	ASTM A-312
Working Pressure Range	Full Vacuum to 300 PSI
Maximum Working Pressure	300 PSI / 20.7 bar
Primary Function	Joining Two Compatible Stainless Steel Pipe Sections

Coupling Without Stop Design

A press coupling without stop joins two compatible sections of stainless steel pipe in a straight run without an internal center stop.

Because there is no internal stop, the coupling can slide farther onto the pipe during installation. This can make the fitting useful for repair work, replacement sections, and situations where the coupling must be moved into position after the pipe ends are aligned.

The fitting is installed using compatible stainless press tooling and is mechanically pressed onto the prepared pipe.

With Stop vs. Without Stop

Coupling Without Stop

No internal center stop
Can slide along compatible pipe
Useful for repair and retrofit work
Allows greater positioning flexibility
This product configuration

Coupling With Stop

Internal stop provides a pipe insertion reference
Helps center pipe ends in the fitting
Common for standard straight-run installations
Pipe insertion is limited by the internal stop
Different installation configuration from this coupling

Compatible Stainless Steel Pipe

304 / 304L Stainless Steel

Compatible pipe material identified by Merit
Schedule 5 or Schedule 10 pipe
Pipe must conform to ASTM A-312
Verify pipe outside diameter and condition before installation
Confirm chemical compatibility for the intended media

316 / 316L Stainless Steel

Compatible pipe material identified by Merit
Schedule 5 or Schedule 10 pipe
Pipe must conform to ASTM A-312
Suitable where the specified system requires 316/316L pipe
Confirm chemical compatibility for the intended media

Press Connection Benefits

Mechanical Press Installation

Uses compatible press tooling
No threaded joint required
No fitting weld required
Supports repeatable mechanical connections
Suitable for compatible stainless steel piping systems

Flexible Positioning

No internal stop restricting movement
Allows fitting to slide onto the pipe
Useful when joining existing piping
Helpful for replacement pipe sections
Provides installation flexibility in repair applications

Pressure Range

Merit states that its Stainless Steel Press Fittings have a working pressure range from full vacuum to 300 PSI (20.7 bar) when installed on compatible Schedule 5 or Schedule 10 stainless steel pipe.

System suitability should be confirmed based on pipe size, pipe material, temperature, conveyed media, seal compatibility, installation method, and the applicable Merit Stainless Press documentation.

Installation & Selection Guidance

Confirm the required nominal fitting size before ordering.
Use only compatible Schedule 5 or Schedule 10 stainless steel pipe.
Confirm pipe is Type 304/304L or 316/316L stainless steel as required.
Verify that the pipe conforms to ASTM A-312.
Confirm the fitting and pipe outside diameters are compatible.
Inspect and properly prepare both pipe ends before installation.
Because the coupling has no internal stop, mark the required insertion depth on the pipe before pressing.
Position the coupling correctly over both pipe ends before pressing.
Use compatible press tooling and jaws approved for the Merit Stainless Press system.
Follow the applicable pressing sequence and tooling instructions.
Confirm system media compatibility using the Merit chemical compatibility chart.
Verify that the full-vacuum-to-300-PSI working range is suitable for the intended system.
Review applicable approvals and submittal requirements before specifying the fitting.
Installation should follow Merit instructions and applicable piping codes and project requirements.

Product Documents

Merit Stainless Press Approvals

Review applicable approvals and certifications for the Merit Stainless Press fitting system.

View Stainless Press Approvals

Merit Stainless Press Benefits & Features

Review manufacturer information covering key benefits and features of the Stainless Press system.

View Benefits & Features

Merit Stainless Press Dimensional Catalog

Review fitting dimensions, available configurations, and product-specific dimensional information.

View Dimensional Catalog

Merit Stainless Press Chemical Compatibility Chart

Review chemical compatibility information before selecting fittings for the intended system media.

View Chemical Compatibility Chart

Merit Stainless Press FAQs

Review manufacturer answers to frequently asked questions about the Merit Stainless Press system.

View Stainless Press FAQs

Merit Stainless Press Handout

Review the manufacturer overview of the Stainless Press product line and system features.

View Stainless Press Handout

Merit Stainless Press Linecard

Review the available Merit Stainless Press product offering.

View Stainless Press Linecard

Merit Stainless Press Submittals

Review technical submittal information for the Merit Stainless Press fitting system.

View Stainless Press Submittals

Merit Stainless Press Tooling

Review compatible tooling information and pressing requirements before installation.

View Stainless Press Tooling

Pipe Chart: Common Diameters & Wall Thicknesses

Reference common pipe diameters and wall thicknesses when reviewing Schedule 5 and Schedule 10 stainless steel pipe.

View Pipe Chart

Need Help Selecting a Stainless Press Coupling Without Stop?

Our industrial PVF specialists can help review your fitting size, stainless steel grade, pipe schedule, repair layout, working pressure, media compatibility, and tooling requirements before you order.

Email the GetPipe.com Team Visit Quick Support

Frequently Asked Questions

What is the difference between a coupling with stop and without stop?

A coupling with stop has an internal center stop that limits pipe insertion. A coupling without stop does not, allowing it to slide along the pipe for greater positioning flexibility.

Why would I use a coupling without stop?

A no-stop coupling is especially useful for repairs, replacement pipe sections, and installations where the fitting must slide over the pipe before being positioned across the joint.

What pipe is this coupling designed for?

Merit identifies the Stainless Press system for Schedule 5 or Schedule 10 Type 304/304L or 316/316L stainless steel pipe conforming to ASTM A-312.

What is the working pressure range?

The stated working pressure range is from full vacuum to 300 PSI (20.7 bar) on compatible Schedule 5 and Schedule 10 stainless steel pipe.

Does this fitting require welding?

No fitting weld is required for the press connection. The fitting is mechanically pressed onto compatible stainless steel pipe using the appropriate tooling.

Does this fitting use threads?

No. This coupling uses press connections rather than threaded connections.

Can this fitting be used with both 304 and 316 stainless steel pipe?

The supplied Merit information identifies Type 304/304L and 316/316L stainless steel pipe as compatible when the pipe also meets the specified schedule and ASTM A-312 requirements.

What pipe schedules are compatible?

The supplied information identifies Schedule 5 and Schedule 10 stainless steel pipe.

Where can I find dimensions?

Use the Merit Stainless Press Dimensional Catalog in the Product Documents section above.

Where can I check chemical compatibility?

Use the Merit Stainless Press Chemical Compatibility Chart in the Product Documents section above.

Where can I find compatible press tooling?

Use the Merit Stainless Press Tooling document in the Product Documents section above.

Important Ordering Notes

Product is a stainless steel press coupling without stop.
No internal center stop.
Designed for Schedule 5 or Schedule 10 stainless steel pipe.
Compatible pipe materials identified as 304/304L and 316/316L stainless steel.
Compatible pipe must conform to ASTM A-312.
Working pressure range is stated as full vacuum to 300 PSI / 20.7 bar.
No-stop configuration allows the coupling to slide along compatible pipe.
Useful for repair and retrofit installations.
Confirm nominal fitting size before ordering.
Verify pipe material, schedule, outside diameter, and condition before installation.
Mark proper insertion depth before pressing because there is no internal stop.
Confirm media compatibility using the manufacturer chemical compatibility chart.
Use compatible Merit Stainless Press tooling.
Review approvals, dimensional information, tooling requirements, and submittals before installation.