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May 27, 2016 By Waverley Brownall

How To Assemble Twin Ferrule Compression Fittings

How To Assemble Twin Ferrule Compression Fittings

This guide on how to assemble twin ferrule compression fittings is based solely upon our Ringlok OD compression fittings range.

twin ferrule tube fittings

Ringlok Tube Fittings

Ringlok is the trademark name for our twin ferrule compression fittings.

twin ferrule compression fittings

Ringlok Imperial And Metric Charts

View our sizing charts for twin ferrule fittings.

This Waverley Brownall blog post features:

  • Pre-assembly instructions (Tools and considerations)
  • Assembly instructions
  • Links to re-assembly instructions

Caution: Use only Waverley Brownall’s Ringlok components for safety and reliability.
Mixing components may not provide reliable joint assemblies and leakage could occur.

Pre-Assembly Instructions For Twin Ferrule Compression Fittings

compression fitting assembly

Step One: Hold the pre-assembly tool in a vice, then assemble the joint to the assembly instructions found here.

compression fitting assembly

Step Two: Remove the tube assembly from the pre-assembly tool.

compression fitting assembly

Step Three: Insert the tube assembly into the fitting body and then follow the re-assembly instructions found here.

Do you require assistance in assembling compression fittings?
Please contact us on enquiries@waverleybrownall.co.uk


PRE-ASSEMBLY TOOLS AND CONSIDERATIONS

Pre-assembly tools: These tools are manufactured from hardened Maraging Steel and are designed to withstand repeated assemblies. Pre-assembly tools can be used as an aid to make sure joints are correct.

Assembly tools must be kept clean and lubricated at all times.

Pre-assembly is recommended: Assembly can sometimes present difficulties, especially if the compression fittings are going to be used in confined spaces. Thick wall tubes or standpipe adaptors may also present problems. Pre-assembly ensures the fittings placement and installation to be correct.

Pre-assembly will reduce installation stresses when tube sizes exceed 1/2″ (12mm) OD .

Assembly Instructions: Ringlok Twin Ferrule Compression Fittings

Assembly Instructions for Ringlok Twin Ferrule Compression Fittings.

how to assemble twin ferrule compression fittings

1. Cut the tube to the required length, leaving the ends square to the tube axis, remove all burrs.

2. Insert the prepared tube into the fitting assembly, ensuring the tube end fully enters the fitting, engages in the abutment diameter and that the nut is finger-tight.

3. For 1/16″, 1/8″, 3/16″ OD and 3mm, 4mm OD size fittings, tighten the nut 3/4 of a turn from finger-tight to complete the assembly.

All other sizes require use of 1 1/4 turns from finger-tight.

For blanking plugs, tighten the nut 1/6 of a turn from finger-tight.

Re-assembly: Ringlok fittings can be dissembled and reassembled many times without impairing the efficiency of the joints. Re-assembly instructions can be found here.

SEND AN ENQUIRY

To enquire about our Ringlok twin ferrule compression fittings, email us today on

enquiries@waverleybrownall.co.uk

Filed Under: Uncategorized Tagged With: 316 stainless steel, Ringlok fittings, stainless steel compression fittings, stainless steel instrumentation, stainless steel tube fittings, twin ferrule compression fittings, twin ferrule stainless steel fittings

March 14, 2016 By Waverley Brownall

Twin Ferrule Compression Fittings: Tube Selection

Twin Ferrule Compression Fittings: Tube Selection

The following variables should be considered when ordering tube for use with our twin ferrule compression fittings.

I.E.

  • Tubing material
  • Hardness
  • Wall thickness
  • Surface finish

Tube Selection For Twin Ferrule Compression Fittings (Ringlok)

Note: For tubes with a wall thickness other than those listed below, information regarding safe working pressures can be obtained from our technical department.

ringlok compression fittingsTables that show the maximum working pressures of seamless tubes for use with Ringlok fittings can be found on our main Ringlok Fittings page. Scroll down to Tube Selection to view these tables.

316 Stainless Steel Tubing Selection

Stainless steel tube should be fully annealed and conform to ASTM A269 or equivalent. A maximum hardness of Hv180 (HRB 80) is preferred. However, if harder tube is used Hv200 (HRB 90) is the maximum allowed by ASTM A269.

The working pressures in the tables are based on tubing rated at 75,000 psi minimum U.T.S an allowable working stress of 20,000 psi as specified in ANSI B31.3 1987, for a temperature range of -29C to +38C.

Maximum Working Pressure For Alloy 400 Tubing

For use with Ringlok fittings.

Tubing should be fully annealed and conform to ASTM B165-1987 or equivalent for seamless nickel-copper alloy UNS 4400 Tubing, with a minimum UTS of 70,000 psi and an allowable working stress of 18,700 psi.

The tube shall have a maximum hardness of Hv 170 (HRB 75.)

Remember to always consult a qualified and experienced engineer if you are unsure on tube selection for our twin ferrule compression fitting range.

We can answer your questions Mon-Fri on 01702 600014
enquiries@waverleybrownall.co.uk

DOWNLOAD OUR RINGLOK IMPERIAL AND METRIC CHARTS

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Related pages:

  • Single ferrule compression fittings (Duoloc)
  • Flange fittings
  • Gas release flaps

Filed Under: Uncategorized Tagged With: Ringlok fittings, stainless steel compression fittings, stainless steel tube fittings, twin ferrule compression fittings, twin ferrule stainless steel fittings

  • Duoloc Imperial & Metric Charts
  • Ringlok Imperial & Metric Charts

Call us or email us on:
+44(0)1702 600014
enquiries@waverleybrownall.co.uk

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