Rednal Pneumatics / Rednal Industries / Rednal Pressure Vessels

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Pressure vessels and Air Receivers previously made by Rednal can be supplied by Abbott & Co. (Newark) Ltd 

Some company history on Rednal 

23/11/12 REDNAL PNEUMATICS LTD (reg No.05506142) changed it’s name to BLUE PNEUMATICS LTD – same reg no 05506142

30/11/12 Nuband Ltd changed its name To Rednal Pneumatics Ltd

14/12/12 the administrators were appointed for Blue Pneumatics Ltd

26/02/14 REDNAL PNEUMATICS LTD – 06933824 (previously NUBAND Ltd) had a winding up petition on 11/10/13 and went into administration

on 26/02/14
Much of the plant was owned by a finance company and sold. 

With over thirty years experience in pressure vessel manufacture,a lot of customers have been left looking for an alternative supplier to help them at this time.

Rednal had developed a pressure vessel production line that integrated all parts of the production process, from flat steel to finished product, into one process, under one roof.

Massive investment in design, laser cutting, seam welding, dished end manufacture, shot blasting, powder coating, CNC machining and testing had allowed Rednal to eliminate 3rd party costs and delays in the production process.

This approach allowed Rednal to offer competitive prices, flexibility and rapid turnaround of all types, sizes and certifications of pressure vessel.

Rednal aimed to remain the leading European manufacturer of short to medium runs of all grades and types of pressure vessel.

Their product range included

Pressure Vessels – their pressure vessel manufacturing systems demands that all manufacturing is done in house from laser cutting, dished end fabrication, welding to CNC fabrication of any bosses or other parts.

If you are stuck for a supplier of this at the moment, Abbotts is also able to provide this service

Air Receivers

They stocked a range of standard air receivers from 50 litres to 2000 litres but also sub-contract manufacture air receiver tanks for all the leading brands across Europe.
If you are stuck for a supplier of this at the moment, Abbotts is also able to provide this service contact us

All documentation was available electronically before despatch whilst traceability and validation complied with the directives of any industry codes, however demanding.

Their own air receivers went with pressure relief valves, drains and gauges,

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They also made a range of Fire Suppression Tanks – Rednal fire suppression tanks were all types of high pressure cylinders and tanks for use in the fire suppression industry produced to all relevant safety standards including ASME, TEPD and PED.

Manufacturing for companies in Europe, the far east and the USA they supplied tanks of up to 65 bar and 3000 litres, depending on space and weight restrictions, in mild or stainless steel

All fire suppression tanks were fully tested and inspected by Lloyds of London

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Expansion & Anti-surge Tanks – Rednal could manufacture any size or type of expansion or surge tank to any pressure code and in almost any material.

Typical uses for expansion tanks and anti-surge vessels included fire control systems, water treatment, pumping systems, heating networks and district heating systems. The expansion tanks could be fitted with rubber membranes to prevent oxygen absorption or conversely can use Rednal’s unique Vacuum based de-aeration tank – this worked by introducing a vacuum into the tank by means of negative pressure pumps used for system pressurization.

Rednal’s patented Superheated Expansion tank is in service with companies across the world including Airbus, Arcelor Mittal and Michelin amongst many. The patent covers a unique method of mixing water so as to avoid any noise during the operation of the system.

If you are stuck for a supplier of this at the moment, Abbotts is also able to provide this service

Rednal was a manufacturer of separators for many of the largest manufacturers of separators in Europe for the fabrication of the pressure vessels required. Capable of manufacturing every type of pressure vessel for Air / Oil Separators through chemical separators to centrifugal, cyclone and steam separators.

If you required separators in any steel, to any code and in any size or pressure then Rednal had the experience and the knowledge to deliver the right quality and the right price.

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Filter Vessels

Rednal manufactured all sizes of filter vessels according to the specifications of clients from a range of materials.

Most notably used in the petrochemical, pharmaceutical and food industries their semi-continuous manufacturing lines produced any design in any volume required.

Their production system covers every aspect of the manufacturing process including CNC machining, dished end manufacture, hydraulic testing, rolling and welding.

They operated their own continuous powder coating line and can supply any colours or coatings as requested and also operated a bead and shot blasting, polishing, pickling and passivating lines as required.

If you are stuck for a supplier of this at the moment, Abbotts is also able to provide this service

Rednal was sub contract manufacturing pressure vessels for use as air dryers for over 30 years. These include regenerative desiccant dryers, refrigerated dryers, deliquescent dryers and membrane dryers. they could make the basic pressure vessel or manufacture the complete assembly as required.

The pressurisation of the air could produce acidic condensate so it was vital that any pressure vessels are manufactured to the very highest standard.

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Hot Water & Solar Tanks
Rednal manufactured its own range of indirect and electric hot water heaters, solar water heaters and water storage tanks in 316L stainless steel.

Available in sizes of up to 5000 litres with multiple fixed or flexible coils or removable U tube bundles or electrical resistance heaters, we can meet the requirements for any form of water storage of heating from renewable or indirect heat sources.

If you are stuck for a supplier of this at the moment, Abbotts is also able to provide these

Blow Down/Flash Tanks

Rednal made a range of these as Steam Boilers are blown down continually, or / and at regular intervals, to remove dissolved solids (sludge) which can cause overheating of the heat transfer surfaces of the boiler. The sudden discharge of high temperature pressurised hot water is dangerous and can damage connections on the network which is why tanks that accept blowdown should be constructed as pressure vessels so to cope with the shock loading of intermittent blowdown.

It is also necessary to avoid the discharge of hot water into the public system, particularly if the system is pressurised as any discharge would lead to flash steam.

Accordingly the installation of a steam blowdown or flash tank steam flash vessel was required.

Rednal had its own team to design these systems for any type of installation with heat recovery units integrated into the tanks to produce heating or potable water.

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Repair & Refurbishment

Rednal was able to repair and refurbish any pressure vessel from any manufacturer -and would guarantee that all repaired and refurbished tanks will be almost as good as one of their new tanks.

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All Rednal pressure vessels could be designed and constructed to any of the following codes for which we are fully accredited:


EN 286,

ASME VIII Div I U Stamp,

PD 5500 Cat 1, 2 and 3,






EN 13445 - Unfired Pressure Vessels is a standard that provides rules for the design, fabrication, and inspection of pressure vessels

EN 13445 consists of 7 parts:

Parts 7 and 9 do exist but they are merely technical reports.

EN 13445 was introduced in 2002 as a replacement for national pressure vessel design and construction codes and standards in the European Union and is harmonized with the Pressure Equipment Directive (97/23/EC or "PED"). New updated versions of all parts were published between 2009 and 2012.

China Special Equipment Licence,

The China Compulsory Certificate mark, commonly known as a CCC Mark, is a compulsory safety mark for many products imported, sold or used in the Chinese market. It was implemented on May 1, 2002 and became fully effective on August 1, 2003.[1]

It is the result of the integration of China's two previous compulsory inspection systems, namely "CCIB" (Safety Mark, introduced in 1989 and required for products in 47 product categories) and "CCEE" (also known as "Great Wall" Mark, for electrical commodities in 7 product categories), into a single procedure.


M Stamp,


Please remember that CE codes now replace:

BS 5169,



De Dienst voor het Stoomwezen werd in 1855 opgericht. Het was in het Stoombesluit aangesteld als uitvoerende instantie van de Stoomwet. Tot de privatisering was het Stoomwezen onderdeel van het Directoraat-generaal van de Arbeid. Het Stoomwezen had inspecteurs in dienst die periodieke keuringen uitvoerden aan ketels en machines. Het instituut was onderverdeeld in aanvankelijk zes districten verspreid over het land, een aantal dat naderhand werd verkleind tot drie. De grenzen van de verschillende districten zijn in de loop der tijd ook gewijzigd. De inspecteurs rapporteerden in de negentiende eeuw ook over de erbarmelijke arbeidsomstandigheden waaronder de fabrieksarbeiders vaak werkten.


Le CODAP est un code proposant des règles de conception, calcul, construction et inspection pour les appareils à pression. Il s'agit d'un code de construction français, éventuellement traduit en anglais. Ce code permet de se conformer aux exigences de la Directive Européenne des Equipements sous Pression (Directive 97/23/CE). CODAP est un acronyme pour Code de Construction des Appareils à Pression non soumis à la flamme. D'une manière générale et comme la plupart des codes européens il propose une approche moins conservatrice pour le calcul des épaisseurs de paroi que les codes de construction ASME américains (American Society of Mechanical Engineers). L'approche du CODAP (et des codes de pays européens traitrant du même sujet) permet de concevoir, en définitive, des appareils à pression plus légers que ceux conçus par les codes ASME mais au prix de procédures et de processus d'examens, de contrôles et d'essais de matériaux, de procédés de fabrication, de mesures ainsi que de qualifications de personnels beaucoup plus draconniens.


Simple Pressure Vessels (SPV) Directive 2009/105/EC

Know more about the Simple Pressure Vessels (SPV) Directive?

The SPV applies if you design or manufacture certain types of simple pressure vessels to be sold or used in europe.

What does the directive cover?

The SPV applies to simple pressure vessels manufactured in series. A 'simple pressure vessel' means any welded vessel subjected to an internal pressure greater than 0,5 barg which is intended to contain air or nitrogen and which is not intended to be fired.

It must have pressure parts made from either non-alloy quality steel or non-alloy aluminium or non-age hardening aluminium alloys. The maximum working pressure of the vessel must not exceed 30 bar and the product of the maximum working pressure (PS) and the capacity of the vessel (V) shall not exceed 10 000 bar/litre.

Vessels where PS x V exceeds 50 bar/litre must satisfy the essential safety requirements set out in Annex I of the Directive and undergo a notified body assessment.

Depending upon the type of equipment - its pressure rating x volume or the manufacturing standard used - manufacturers may select a procedure from a range of conformity modules, which include:

manufacturers self-certification;

third-party type examination (EC Type Examination);

third-party inspection (EC Certificate of Adequacy or EC Verification).

How can we help?

Abbotts has Lloyd's Register Verification Limited as its notified body for the Simple Pressure Vessel Directive. We have the capability to cover all aspects of the SPVs conformity modules, including:

EC Type Examination;

EC Certificate of Adequacy;

EC Certificate of Verification;

EC Certificate of Conformity.

EN 286,





With only a few exceptions, Abbotts can build to the vast majority of these codes.

Materials Used by Rednal Pneumatics / Rednal Industries for products included,
304 Stainless Steel – 304L Stainless Steel
310 Stainless Steel – 316 Stainless Steel
316TI Stainless Steel – 904L Stainless Steel
Carbon Steel – Copro Nickel
C276 Hastelloy – C22 Hastelloy
Alloy 625/825 – Aluminium
Ferralium 255 – Incolloy
Inconel – Monel 400
Nicrofer 7320 Alloy 75

We are able to supply vessels in these materials if you need assistance at this moment in time.

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LLoyds Ru;les:

Other Pressure Vessels


1 General requirements

2 Cylindrical shells and drums subject to internal


3 Spherical shells subject to internal pressure

4 Dished ends subject to internal pressure

5 Dished ends for Class 3 pressure vessels

6 Conical ends subject to internal pressure

7 Standpipes and branches

8 Construction

9 Mountings and fittings

10 Hydraulic tests

11 Plate heat exchangers

n Section 1

General requirements

1.1 Application

1.1.1 The requirements of this Chapter are applicable to

fusion welded pressure vessels and plate heat exchangers,

intended for marine purposes but not included in Chapter 10.

The equations in this Chapter may be used for determining

the thickness of seamless pressure vessels using a joint factor

of 1,0. Seamless pressure vessels are to be manufactured

and tested in accordance with the requirements of Chapter 5

of the Rules for the Manufacture, Testing and Certification of

Materials (hereinafter referred to as the Rules for Materials).

For the construction and design of pressure vessels and plate

heat exchangers for liquefied gas or chemical cargo applications,

see the Rules and Regulations for the Construction and

Classification of Ships for the Carriage of Liquefied Gases in

Bulk (hereinafter referred to as the Rules for Ships for

Liquefied Gases) or the Rules and Regulations for the

Construction and Classification of Ships for the Carriage of

Liquid Chemicals in Bulk (hereinafter referred to as the Rules

for Ships for Liquid Chemicals) as applicable.

1.1.2 Where the required design criteria for pressure

vessels are not indicated within this Chapter, the relevant

Sections of Chapter 10 are applicable.

1.1.3 Seamless pressure vessels are to be manufactured

in accordance with the requirements of the Rules for Materials

where applicable.

1.2 Definition of symbols

1.2.1 The symbols used in the various formulae in

Sections 2 to 7 inclusive, unless otherwise stated, are defined

as follows, and are applicable to the specific part of the

pressure vessel under consideration:

d = diameter of hole, or opening, in mm

p = design pressure, see 1.3, in bar

ri = inside knuckle radius, in mm

ro = outside knuckle radius, in mm

s = pitch, in mm

t = minimum thickness, in mm

Di = inside diameter, in mm

Do = outside diameter, in mm

J = joint factor applicable to welded seams, see 1.9, or

ligament efficiency between tube holes (expressed

as a fraction, see Ch 10,2.2)

Ri = inside radius, in mm

Ro = outside radius, in mm

T = design temperature, in °C

  = allowable stress, see 1.8, in N/mm2.

1.2.2 Where reference is made to calculated or actual

plate thickness for the derivation of other values, these

thicknesses are to be minus the standard Rule corrosion

allowance of 0,75 mm, if not so stated.

1.3 Design pressure

1.3.1 The design pressure is the maximum permissible

working pressure, and is to be not less than the highest set

pressure of any relief valve.

1.3.2 Calculations made to determine the scantlings of

the pressure parts are to be based on the design pressure,

adjusted where necessary to take account of pressure

variations corresponding to the most severe operational


1.3.3 It is desirable that there should be a margin

between the normal pressure at which the pressure vessel

operates and the lowest pressure at which any relief valve is

set to lift, to prevent unnecessary lifting of the relief valve.

1.4 Metal temperature

1.4.1 The metal temperature, T, used to evaluate the

allowable stress,  , is to be taken as the actual metal

temperature expected under operating conditions for the

pressure part concerned, and is to be stated by the manufacturer

when plans of the pressure parts are submitted for


1.4.2 The design temperature, T, for calculation purposes

is to be not less than 50°C.

1.5 Classification of fusion welded pressure


1.5.1 For Rule purposes, pressure vessels are graded as

Class 1 where the shell thickness exceeds 38 mm.


Part 5, Chapter 11

Section 1


1.6.2 Plans of full constructional features of the vessel

and dimensional details of the weld preparations for longitudinal

and circumferential seams and attachments, together

with particulars of the welding consumables and of the

mechanical properties of the materials, are to be submitted

before construction is commenced.

1.7 Materials

1.7.1 Materials used in the construction of Class 1, 2/1 and

2/2 pressure vessels are to be manufactured, tested and

certified in accordance with the requirements of the Rules for

Materials. Materials used in the construction of Class 3 pressure

vessels may be in accordance with the requirements of an

acceptable national or international specification. The

manufacturer’s certificate will be accepted in lieu of Lloyd’s

Register’s (hereinafter referred to as LR) material certificate for

such materials.

1.7.2 The specified minimum tensile strength of carbon

and carbon-manganese steel plates, pipes, forgings and

castings is to be within the general limits of 340 to 520 N/mm2.

1.7.3 The specified minimum tensile strength of low alloy

steel plates, pipes, forgings and castings is to be within the

general limits of 400 to 500 N/mm2, and pressure vessels

made in these steels are to be either seamless or Class 1

fusion welded.

1.7.4 Where it is proposed to use materials other than

those specified in the Rules for Materials, details of the chemical

compositions, heat treatment and mechanical properties are

to be submitted for approval. In such cases, the values of the

mechanical properties used for deriving the allowable stress

are to be subject to agreement by LR.