Waverley Brownall

Our philosophy is dominated by quality.

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How To Order Steel Tube That Won’t Let You Down

The majority of our custom base requires stainless steel tube and compression fittings for an industrial environment – ensuring the flow and control of that flow is the highest quality at a range of temperatures and pressures.

The integrity of a compression fitting connection is highly dependent upon the correct selection of tubing and on its correct preparation.

It is important to order the correct stainless steel tube, that is of a high quality for any application. This is why we supply 316L tube to BS 9001 standard.

How To Order Steel Tube

To order your tube, please email us at

enquiries@waverleybrownall.co.uk

Metric or imperial sizes available – 3 metre and 6 metre length.

Sizes up to 1 inch tube O.D Outside Diameter and 0.109″ wall thickness.

We supply stainless steel tube to Conoco Phillips, SGN and National Grid. By choosing to order with us, you are choosing a guaranteed high-quality UK based supplier that is trusted by the biggest brands.

Steel Tube – Ensuring Quality

These are four variables to be considered when selecting tube:

a. Tubing Material

b. Tubing Wall Thickness

c. Tubing Surface Finish

d. Tubing Hardness

The key to leak proof fitting is that the tube must be softer than the ferrule for the correct “coining” action to take place.

The tube specification should include material, hardness, wall thickness and surface finish. Tube should never be harder than the ferrules contained in the connector i.e. Monel ferrules should never be used on stainless steel tube as this could adversely affect the performance of the ferrules.

The tube wall thickness for maximum working pressures, together with recommendations for gas use, and when to pre-assemble are to be found in the Ringlok and Duoloc catalogues.

Tube Material Selection

Waverley Brownall can supply tube in a large range of materials. This includes grade 316 stainless steel tube as standard. Steel tube is the most popular tube type within the majority of industrial applications.

However, other, more advanced materials are able to give you more advanced capabilities. This includes a higher corrosion resistance and general strength than steel.

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Tube materials list:

· INCOLOY 825

· Hastelloy C-267

· INCONEL

· Monel alloy 400

· Titanium (Grades 1-4)

· Super Duplex

· Duplex Stainless Steel

· 6% Moly Stainless Steel

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Flow Rates For Non Return Valves

Find below the flow rate chart for Non-Return valves manufactured in stainless steel.

Valves are available with working pressures up to 3000 psi and can be supplied to comply with NACE specification.

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Pressure drop in PSI

10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Gallons per minute

CV1 (1/8″) 1.94 3.10 3.91 4.59 5.02 5.44 5.66 6.06 6.36 6.67 6.97 7.27 7.50 7.75
CV2 (I/4″) 2.02 2.85 3.46 4.00 4.43 4.86 5.27 5.65 6.02 6.36 6.93 7.25 7.52 7.78
CV3 (3/8″) 1.60 5.04 6.14 6.77 7.65 8.38 9.03 9.71 10.30 10.50 10.80 11.0 11.10 11.30
CV 4 (1/2″) 7.15 9.94 11.90 13.70 14.80 16.0 16.90 17.60 18.90 19.90 20.80 21.30 22.40 23.20
CV6 (3/4″) 4.30 9.50 32.30 37.50 42.80 47.10 51.0 54.7 58.3 61.5 64.8 67.4 70.5 73.2
CV8 (1″) 4.0 9.90 35.7 41.5 46.9 51.6 55.7 59.6 63.5 67.2 70.1 72.9 75.8 78.4

Numbers represented, please note numbers 37.7 is representative of 37.70. Examples: 55.7 = 55.70, 59.6 = 59.60 and so forth. For quick reference only.

Non-Return Valve specification

Parts list and breakdown, including an inlet at the base following from PART F upward to PART A to an outlet.

check valve non return valve diagram

PART A – Valve Body
PART B – Spring
PART C – Piston
PART D – Piston Seal
PART E – Body Seal
PART F – Valve Seat

Seal Type

P.T.F.E Seals are supplied as standard unless use of Viton seals are necessary.

The use of P.T.F.E seals with non-return valves up to 3/8″ containing a low pressure spring such as 2-5psi, combined with low back pressure, can lead to difficulty in forming a leak-tight seal between the piston seal and the cone seat. This is overcome by using either a Viton seal or a stronger spring. Valve opening pressures of 35 psi are available up to 1/2″, with 2-5 psi only available for 3/4″ and upward.

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Seal Kits

Replacement seal kits are available and consist of the following items; piston seal, body seal and spring.

Replacement seal kit part numbers for immediate order:

Valve Size Part Number
1/4″ CV2 SEALS
3/8″ CV3 SEALS
1/2″ CV4 SEALS
3/4″ CV6 SEALS
1″ CV8 SEALS

In Line Filters

A filter should always be placed upstream of the non-return valve when the media has solids suspended in it. If a filter is not used the piston seal may become damaged, so allowing the media to flow back upstream.

Information supplied via WAVERLEY® Components and Products Limited Ltd. Product Catalogue ‘316 Stainless Steel Pipeline Components and Valves’ and is not to be redistributed, copied or shared without a link to the original source under any circumstances.

Information supplied is for reference use only.

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Inconel 625 Tubing UK Suppliers

Introducing a reliable, UK supplier of Inconel 625 tubing – Waverley Brownall.

UK Supply of 625 Tubing

As part of our Special Metals services, we supply to all postcode areas throughout the United Kingdom. Tubing is one of our company’s staple supply services. On a regular basis, we supply tubing to customers such as Wales and West and National Grid.

Order 625 tubing by clicking the button below:

ORDER NOW

This will send a direct email to our sales team.

Delivery: Fast delivery options are available for urgent orders of tube and fittings. Part shipment can also be provided to ensure a prompt delivery time of the most vital items included in your order.

Tubing Sizes

Tubing is available in lengths of 6 metre and 3 metre.

Please refer to our stainless steel tube chart as a sizing guide for the 625 tubing available – Note: The pressures and temperature ranges will fluctuate in accordance with material type purchased.

Inconel 625

inconel 625 composition

Inconel 625 Composition

Inconel 625 is a material with high strength, fabricability and corrosion resistant properties. Inconel 625 tubing is popular within the nuclear, marine and energy industries because of its versatility across a range of applications.

Imperial

625 Tube OD from 1/18″ up to 1″ for all imperial sizing.

Metric

625 Tube OD from 3mm to 25mm for metric sizing.

625 Tube and Pipe Standards

ASTM B 444/B 829

ASME SB 444/SB 829

ASTM B704/B 751

ASME SB 704/SB 751

ASTM B705/B 775

ASME SB 705/SB 775

ISO 6207

SAE/AMS 5581

VdTÜV 499

BS 3074NA21

DIN 17751

ASME Code Case 1935

Accredited and reliable UK suppliers to the Oil & Gas industry.