Waverley Brownall

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March 8, 2017 By Waverley Brownall

Tube VS. Pipe – 8 Advantages Of Using Tube Instead Of Pipe

Tube VS. Pipe – 8 Advantages Of Using Tube Instead Of Pipe

Tube VS. Pipe, which would be better for your application?

Tube VS. Pipe

We have listed 8 advantages to use tubing over pipe based on usability and maintenance.

1. Tube is easier to install without the need for special tooling to cut threads. Standard spanners are all that is required.

2. Tube is easier to manipulate, bend, because of the thinner wall sections. Pipe on the other hand cannot be bent easily therefore elbows are usually required which introduces extra leak paths for the extra fittings. Therefore tube installations are far quicker and cost-effective than pipe.

3. No thread sealant is required prior to assembly, as would be the case for taper threaded pipe ends.

4. Systems much easier to disassemble for scheduled maintenance.

5. Tube is lighter since no allowances are required for threading whilst maintaining sufficient wall thickness.

6. The gradual tube bends provide better fluid flow and ultimately smaller pressure drops, as opposed to the sharp bends in elbows which create greater pressure drops due to turbulence and the loss of potential energy.

7. Tube is lighter since no allowances are required for threading whilst maintaining sufficient wall thickness.

8. The gradual tube bends provide better fluid flow and ultimately smaller pressure drops, as opposed to the sharp bends in elbows which create greater pressure drops due to turbulence and the loss of potential energy.

We supply stainless steel tube to our customers in many sizes, including up to 1 inch OD. Wall thicknesses up to 0.109″ or 3.0mm. Our tubing ISO 9001 approved.

We can advise you on what tube sizes are recommended for gas service as apposed to other services, such as water or corrosive substances.

Our tube is compatible with single and double ferrule Waverley Brownall fittings.

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

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Tube Bending Tips For Duoloc Fittings

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Metric Steel Tubing Sizes

Metric steel tubing sizes for our seamless tube. Our tubing is perfect for use with instrumentation fittings and valves. Material is[…]
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Instrumentation Tubing

Metric and Imperial OD Tubing by Waverley Brownall is stocked. This seamless tubing comes in 316 stainless steel as standard[…]
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Metric Tube Sizes Chart – Stainless Steel Tube

Metric tube sizes chart, showing the tube OD and tube wall thickness and pressures in bar. The OD measurement is[…]
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Filed Under: Uncategorized Tagged With: advantages of tube, instrumentation tubing, stainless steel tube, stainless steel tube suppliers, stainless steel tubing, tube VS. pipe

March 1, 2017 By Waverley Brownall

Alloy 625 Tubing | 625 Tube Sizes & UK Supply

Alloy 625 Tubing | 625 Tube Sizes & UK Supply

All tubing is supplied from Waverley Brownall Ltd. in accordance with BSI  9001 quality procedure.

Alloy 625 tube is supplied to customers within the UK and abroad.

​

Inconel 625 Tube Sizes

Imperial sizes for alloy 625 tube:

TUBE O.D WALL THICKNESS
1/4  .028
3/8 .035, .049, .065
1/2 .035, .049, .065, .083
3/4 .049, .065, .083, .093, .0109

Alloy 625 tube fittings also supplied on request with a selection of the most common thread types (NPT, BSPT, BSPP etc) available.

Metric sizes for alloy 625 tube:

TUBE O.D WALL THICKNESS
3  .5mm, .07mm
6 .07mm, 1.0mm, 1.5mm
10-12 1.0mm, 1.5mm, 2.0mm
25 1.5mm, 2.0mm, 2.5mm, 3.0mm

It is popular with the marine and offshore industries due to high corrosion resistance to seawater.

To order, email our sales team at enquiries@waverleybrownall.co.uk for a free price quotation and estimated delivery.

If your order for alloy 625 tube is urgent, we ask that you state this within the email or call us directly on +44 01702 600014 for prompt response.

Alloy 625 Suppliers UK

Areas supplied within the United Kingdom include: Buckinghamshire, Cambridgeshire, Derbyshire, Aberdeen, Devon,  Belfast, Inverness, Essex, Gloucestershire, Hampshire, Kent, Lancashire, North Yorkshire and more!

Filed Under: Uncategorized Tagged With: 625 alloy, 625 pipe fitting suppliers, 625 tubing, alloy 625 tube sizes, Alloy 625 Tubing, alloy 625 tubing suppliers uk, corrosion resistant tube, corrosion resistant tubing, inconel 625 pipe, inconel 625 tube, special metals

February 22, 2017 By Waverley Brownall

What is check valve cracking pressure?

 

What is check valve cracking pressure?

mini check valve sectioned stainless steel
(Pictured) Miniature Check Valve

Cracking pressure is the inlet pressure at which the first sign of flow occurs. Although often used with liquids, check valves are also used in industrial processes which handle gases and chemicals. Back pressure refers to the difference in pressure between the inlet and the outlet of the valve. When the cracking pressure is reached, the valve will open to allow flow of the material, when it drops, the valve will close.

*Adjustable springs allow for a variety of cracking pressures.

(PSI)
Miniature check valve cracking pressure – 3, 5, 10, 20, 40, 60, 100, 150
Standard check valve cracking pressure – 5, 15, 25, 30, 45

What is a check valve?

A check valve, is a type of valve used in areas of instrumentation tubing or pipeline to control the flow of a gas or liquid. It allows the inner material to flow through a single direction (unidirectional) with minimal pressure drop.

Also known as a non-return valve or two-port valves, they come in many different forms. Examples of this include ball check, stop-check and lift-check valves. Pneumatic non-return valves will be used when a check valve is insufficient, Eg. where there is a risk of chemical spillage or excessive flooding.

Our check valves consist of a main body, spring, poppet, O-ring, body seal and end cap.

Working Pressures

CHECK-VALVES-SMALL

Waverley Brownall check valves are tested for sealing performance based on BS 6755 Pt.1. The tests consist of both low and high pressure shell for up to 4,500 psi, the equivalent of 310 Bar. Miniature check valves feature a working pressure of up to 6000 psi with a cracking pressure from 3 to 350 psi. A minimal pressure drop and bubble-tight shut off are included in both check valve series.

Our check valves are available in sizes from 1/4″ up to 1″ in stainless steel, with a working pressure of up to 3000 psi. This is the equivalent to 206.8427 bar. Optional end connections for thread forms include NPT (National Pipe Taper), BSPT and BSP.

Tables showing pressure drop (psi) vs flow (SCFM) for air flow vs. water can be found in our precision valves catalogue. Sizes tested include 1/4″, 3/8″, 1/2″ and 1″. The O-ring is in material PFTE/Viton with varying temperature range capability. A nominal cracking pressure of 5, 15, 25, 30 and 45 psi with others on request.

Helpful links:

  • How does it work? (Check valves via Cameron)
  • Hydraulic check valve (Mathworks.com)

Filed Under: Uncategorized Tagged With: check valve, check valve cracking pressure, check valve working pressures, Cracking pressure, Miniature check valves, non-return valves, stainless steel check valve, Standard check valve, what is check valve cracking pressure

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