Waverley Brownall

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December 14, 2016 By Waverley Brownall

25mm Compression Fittings in 316 Stainless Steel

25mm Compression Fittings in 316 Stainless Steel
25mm tube OD sized fittings

with a choice of thread type.

Stainless steel pipe and tube fittings for gas and liquid service. Single and twin ferrule.

25mm Compression Fittings

Perfect for use with tubing and flow control instrumentation valves.

  • BSP Parallel male stud coupling
  • BSPT male stud coupling (Thread size R two varients of 3/4″ and 1″ BSPT)
  • NPTF male stud coupling. NPTF thread sizes 3/4″ and 1″.
  • Male stud elbow with 3/4″  BSPT  thread size (R).
  • Male stud elbow NPTF. 25mm x 3/4″ NPTF thread
  • Parallel male standpipe adaptor 25mm x 3/4″ available in BSP, BSPT and NPTF threads
  • Female stud coupling x 3/4″ BSP, BSPT and NPTF threads
cnc machining of pipe fittings

Our pipe fittings are manufactured by precision machining specialists

Most Popular 25mm Fittings

  • Straight coupling. Part number: 25m/25m SC
  • Bulkhead coupling. Part number: 25m/25m BULK
  • Equal tee
  • Equal elbow
  • Blanking end. Part number: BE25m
  • Blanking plug. Part number: BP25m
  • Compression nut and ferrule at 25mm
Order 25mm Fittings

Pipe Fitting Accessories

We offer a range of accessories to help with the assembly and application of our fittings. These include a ferrule pre-forming tool that is material case hardened, check gauges, pipe clips and flanges.

Our fittings have been used extensively within onshore and offshore applications for over 35 years. The majority of stocked items are available with next day delivery. 25mm is the standard largest fitting in OD for metric sizes, imperial measurements are up to 1 inch.

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Filed Under: Uncategorized Tagged With: 25mm compression fittings, 25mm pipe fittings, 25mm tube fittings, 316 stainless steel, compression fittings in stainless steel, metric pipe fittings, metric tube fittings, pipe fittings, tube fittings

November 24, 2016 By Waverley Brownall

Where Will Your Tube Fittings Be 5 Years From Now?

​Some of the biggest tube fitting manufacturers give a set life-expectancy of their fittings and valves. This is a factor that is entirely dependent on the environment and application, however, generally the replacement of fittings after a certain amount of time is recommended. This is to ensure quality and safety of using the fittings.

Tube Fitting Lifespan Approximations

Tube Fitting Materials Waverley Brownall Manufacturer 1* Manufacturer 2* Manufacturer
3*
Stainless Steel ​10yrs+ 5yrs
+ replacement costs
N/A N/A with
Limited Warranty on Quick Connects
and Metering Valves
Special Metals 15yrs+ with added benefits 15yrs N/A N/A

*Chart is for quick reference only. For full details please contact the manufacturer/direct supplier of these products.

*Manufacturers cannot be named for comparative reasons, however, they are confirmed main manufacturers of tube fittings.

Replacement Costs Due To Failure

Piping systems and applications where tube fittings or valves are implemented are often replaced after a certain period of time. This may be by either the manufacturers recommendation or, more than likely, part of a health and safety regulation necessity within the given industry.

This is due to the high risk factors of operating systems within industries such as chemical processing and petroleum transfer. Components and valves that are within extreme environments of high pressure and temperature must be able to withstand these challenges over a long period of time.

Failures in equipment can be devastating to businesses, costing great loss of money and in some cases – loss of life.​

Tube fittings and valves that are likely to fail are those that:

  • Are poorly manufactured.
    This is usually due to no official standardisation, such as the BSI regulations that Waverley Brownall strictly abide.
  • Are made from a weak material.
    Material selection is vital to ensure the durability of tube fittings.
  • Come with no material trace-ability.
    Some tube fittings that you can buy online are from untraceable or untrustworthy suppliers who will sell fittings with low quality material makeup. All of our materials come with full trace-ability and can be PMI tested for positive material identificationpurposes.

Material Selection

Material selection is one of the key considerations for buying a high quality tube fitting. Fittings, adaptors and connectors will need to be durable, giving a high performance over time.

Our standard material is 316 stainless steel, of which we have been supplying to Conoco Phillips and BP for many years with certified approval. This material copes well within many applications.

Other material choices include Incoloy 825, Hastelloy C-276 and Titanium Grade 2 for unique corrosion-resistant properties. ​

The environment and media of use must be considered before purchasing your tube fittings.​ If you are unsure of your material options, please consult a professional.

Cheaper Alternatives

Correct investment into tube fittings or pipe fittings is to be greatly considered. Cheaper alternatives will always be cheaper for a reason. In order to purchase cheap tube fittings, compression ends and other instrumentation products, you are more than likely risking factors such as accurate materials and application quality.

Interchangability Warning

Some engineers may choose to test the interchangeability of various manufacturer’s compression fittings and valves​ to save money and time. The problem with this method is that interchanging fittings causes complete failure of a system by default.

Example: On a Waverley Brownall equal tee body , a Swagelok-made or Parker-made compression nut will not connect to the body. If this was to repeated in a real life application, the effects would be devastating.

Interchanging tube or pipe fittings from different manufacturers is not recommended under any circumstances – even more so if the manufacturer is not known!

All of our tube fittings come marked for easy recognition.

A Simple Solution

Lower the risk of corrosion failure with the selection of high performance alloys that can cope with extreme environments and media.

Purchase only high quality tube fittings for the longest potential lifespan and quality of application.

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Filed Under: Uncategorized Tagged With: stainless steel tube fittings, tube fitting manufacturers, tube fitting suppliers, tube fittings

November 3, 2016 By Waverley Brownall

Tube Fittings Material Selection

Tube Fittings Material Selection

Tube fittings material selection can be a tricky process, where cost and availability are at the forefront for many industries.

Quick tip: Charts for aqueous corrosion resistance and material composition can be found on our special metals page.

Tube Fittings Material Selection

All products from our compression Tube fittings (single and double) range are available in special metals.

Other products that can be manufactured include pipe fittings for high or low pressure applications and valves for full flow control of media.

Material  Features Availability
316 Stainless Steel Most commonly specified material for a range of environments Immediate with next day delivery
6MO Stainless Steel Pitting, crevice corrosion and strength increased from 316 Moderate stocks
Monel 400 Great choice for general seawater application. Popular with pump manufacturers. Moderate stocks
Duplex SS A natural step-up from 316 and 6MO Moderate stocks
Super Duplex SS Fantastic atmospheric corrosion Moderate stocks
Incoloy 825 Outstanding resistance in reducing environments, used extensively in chemical processing Immediate and Moderate
Inconel 625 High strength, excellent corrosion resistance and welding abilities Deliveries less than 8 weeks
Hastelloy C276 Outstanding corrosion resistance. Almost unmatched in seawater application especially under crevice conditions which would attack 316, 6MO and Monel 400. Immediate for popular size fittings and Moderate material stock
Titanium Excellent strength, corrosion resistance and used extensively in the aerospace and automotive industries. Outstanding all-round resistances. Manufacture-to-order, no more than 6 weeks

Why not get your free quotation?

Simply click the button below and request the fittings
or valves that you are looking for.

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Tube Material Selection

Tubing Material General Application Rec. Temp
Range*
316 Stainless Steel High pressure, High Temperature, Generally Corrosive Media -225C to 605C
Monel 400 Recommended in Sour Gas, Marine and Chemical application -198C to 425C
Hastelloy
C-276
Excellent corrosion resistance to Oxidizing and Reducing Media -198C to 535C
Titanium Resistant to Many Natural Environments such as Seawater and Salt solutions -59C to 315C

Main Considerations When Selection The Right Material

  • Media (Internal)
  • Environment (External)
  • Intended Application and Process
  • Strengths and possible Weaknesses
  • Cost effectiveness (Selecting a special metal over 316 stainless steel is often considered a long-term investment. Costs for maintenance are dramatically reduced.)
  • Availability
  • Health and Safety Regulations
stainless steel fittings

Corrosive Environments

corrosion prevention material selection

Possible corrosive environments are a key factor for the durability of tube fittings and pipe fittings. Certain materials will cope better than others when faced with the different types of corrosion.

You will need to find out the effectiveness of the materials you are considering for your fittings against main consideration factors. (Media, environment, strengths, cost effectiveness, availability, safety…)

Corrosion By Acids

*Chart is to be used as a guideline only. Please discuss with us the internal media and external environment for your tube and pipe instrumentation.

Acidic Media Resistance Material Choices
Sulphuric 6M0 (When the temperature is moderate and concentration is over 65%)

Incoloy 825 (Good general resistance)

Hastelloy C276 or Inconel 625 (At higher temperature ranges)

Hydrochloric 6M0 (Diluted)

Incoloy 825 (Diluted)

Inconel 625 (Diluted)

Hastelloy C276 (The best choice with aggressive solutions)

Phosphoric 6M0 (Pure phosphoric)

Incoloy 825 (Recommended – holds resistance to pure phosphoric at all concentrations and temperatures up to boiling 85%)

Hastelloy C276 and Inconel 625 (In the presence of chlorides and fluorides)

Nitric Incoloy 825 (Resistance to solutions up to boiling 65%)

Inconel 625

Titanium

The Main Considerations In Acidic Corrosion Resistance

  • Concentration of the acid
  • Working temperatures and aeration
  • Inclusion of any other medias
  • The external environment
  • Dilution methods
  • Surrounding health and safety considerations

*Information provided in this blog post are to be used for general material selection guidance only. We recommend you speak to one of our specialists for applying your special metal tube, fittings and valves for the working application.

enquiries@waverleybrownall.co.uk

DON’T MISS OUT

With Waverley Brownall’s vast choice of tube fittings, pipe fittings and valves – you will be sure to find what you need with us.

Common thread types include NPTF, BSP, BSPT and BSPP.

In sizes up to 2″ for standard fittings,
materials include all listed in this post.

Filed Under: Uncategorized Tagged With: corrosion prevention, corrosion resistant alloys, corrosion resistant metals, material selection, pipe fittings, special alloys, special metals, tube fittings, Tube Fittings Material Selection, Tube Material Selection, Tubing Material Selection

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