AS-Schneider – A company with tradition and innovative strength

The family-owned company AS-Schneider is one of the world-wide leading manufacturers of instrumentation valves and manifolds. The core business of AS-Schneider is industrial valves. AS-Schneider was always an innovation driver and idea generator. For example AS-Schneider supplies special valves and fittings for an offshore installation completely made from Alloy C-276. The main challenge lay in the non-wetted metallic components such as screws, pins and handles made from the Special Alloy which can withstand aggressive environments such as salt water long-term. The non-wetted components which are typically manufactured from Stainless Steel, quickly show significant corrosion and lead finally to fracturing of the T-Handles. AS-Schneider supplies the first valves entirely made of Alloy C-276 for use in this very aggressive environment. Embedded data.

AS-Schneider – Preserving values through change

The industrial valve manufacturer AS-Schneider continues to implement its corporate values of innovation culture, customer orientation and international networking – now with a new website. The technically complex revamped website in a new design and with new content appeared end of June.

If you want to seek new paths, you must leave the old ones – AS-Schneider has adhered to this adage. The revamped, better and user-friendly website now has a new design and offers current and new information about the company and the portfolio of products and services. In addition, the use has been optimised and simplified. As an information portal, the new website offers customers and potential new customers to the company the opportunity to gain an overview of the product range. Distinct structures and a clear display are among the new innovations. There is also a host of new features as well as a clear navigation area where users can quickly find their way around.

Customer satisfaction is a top priority at AS-Schneider and we are constantly working on improvements to the company in order to be able to best meet the customers’ wishes. “Values can only be preserved through change” according to CEO Rolf Kummer on the concept for the company.

A visit to the new AS-Schneider website is worthwhile: Embedded data.

AS-Schneider – Pressure gauge always in view

AS-Schneider has again demonstrated its expertise as a solution provider. The industrial valve specialist has developed a customized manifold based on its proven VariAS-Range for a company from the crude oil industry. The VariAS-Block is equipped with a swiveling adapter. This enables the position of the whole pressure hook-up to be flexibly varied, making the valves and pressure gauge easily accessible. The measuring instrument is mounted directly on the VariAS-Block.

The customer, a company from the crude oil industry, required a ball valve with Block & Bleed Function for measuring pressure in a pumping system. This had to have an additional test connector. In addition, the position of the connected pressure gauge was to be flexibly adjustable for ease of reading. A previous solution with several ball valves did not satisfy these requirements.

AS-Schneider developed an individual solution based on the proven VariAS-Range. The forged double Block & Bleed Valves with one-piece valve body replaced conventional installations consisting of several individual valves. The valve specialist fitted the VariAS-Block with a swiveling adapter at the input. This enables the position of the whole pressure hook-up to be flexibly varied, making the valves and pressure gauge easily accessible. The gauge is mounted directly on the VariAS-Block. The primary isolation is carried out by a ball valve, and a separate test port with a fitted test point is integrated into the VariAS-Block. The test port is shut off by means of a needle valve. A small vent valve is fitted for bleeding.

“Custom solutions for special applications are one of AS-Schneider’s major strengths,” says managing director Rolf Kummer. “Our engineers look forward to tackling users’ challenges. That’s because we see ourselves not just as a supplier, but as a solution provider for our customers.” Embedded data.

AS-Schneider – Internationalisation strategy pays off

A stellar fiscal year for AS-Schneider: With 45 million euros, the specialist for industrial valves recorded the highest turnover in its 139-year corporate history in 2014. Particularly positive has been the development of the worldwide locations of the family-owned company from Germany. AS-Schneider has pursued a consistent strategy of internationalization for years and is now celebrating this with great success.

The staff at the medium-sized company also grew strongly again last year: AS-Schneider currently employs some 350 employees globally. The company now has offices in Romania, Singapore, Dubai and the United States making it present with its own businesses on some of the most important sales markets in the world. “We not only have a great year behind us, we have also set the course for the coming years and for our future with innovative projects, ideas and strategies”, emphasises Managing Director Rolf Kummer.

In 2014 AS-Schneider was able to conclude, among other things, a large order for the Sadara chemical plant in Saudi Arabia – with ten million euros, the largest single project in the company’s history. “This shows that we are able to complete international contracts of this magnitude successfully,” Kummer says pleased. AS-Schneider supplies the chemical plant with pre-assembled fittings, so-called “installation hardware”. These must only connect locally to the process line significantly reducing the installation effort at the construction site.

Also In the future, the company will continue on a path of international growth. “Our subsidiaries are developing splendidly and contribute greatly to our good order situation”, describes Kummer. “That’s why we will be starting more activities in the coming years, to be even closer to our customers and optimally serve the markets.” AS-Schneider is planning the next steps in China: Here, a sales office will soon be opened. In addition, the existing sales office in Romanian Plojesti wants to expand the business further to serve customers and partner companies throughout Eastern Europe from this location. Embedded data.

AS-Schneider – AS-Schneider 5 Valve Manifold from the ISO FE Series

TA-Luft is well-known in the German and European processing industries as the guarantee for high-quality stem sealings. But what guarantee do customers get from TA-Luft compliant Industrial Valves and what’s behind the ISO 15848 standard?

TA-Luft is the first general management specification to the German Federal Pollution Control Act (Technical Guideline for Air Pollution Control – TA-Luft). It was published on 30 July 2002 and came into force on 1 October 2002. The document, which comprises 239 pages, only mentions sealing of stem passages in Chapter

According to this, TA-Luft is considered to be complied with if metal bellows with a downstream safety packing or similar sealing systems; in this connection, the equivalence in the verification system must be confirmed in accordance with VDI 2440 (November 2000 issue).

VDI 2440 deals with the sealing system of the stem/shaft seal but not the complete industrial valve. The problem of the inspection according to TA-Luft/VDI 2440 is that important inspection requirements such as the number of switching cycles and the thermal cycles are not specified in concrete terms. Specification like “… in the case of pressures and temperatures and stem or shaft movements that cover the operating conditions,…” allow a great deal of scope for carrying out the inspection. Specialists also often interpret these specifications in different ways. For customers who just want to verify that TA-Luft has been complied with, this means that the following questions are unanswered: How many switching cycles were carried out, were thermal cycles carried out and if
so, how many? This means that a direct comparison of TA-Luft industrial valves is not possible. As a result, it is only possible to recommend having the corresponding inspection report presented.

Apart from this, many seal manufacturers like to advertise with “TA-Luft packings”. Simply using “TA-Luft packings” of this type, does not guarantee long-term leak tightness. Too many other factors play a significant role in a sealing system. These include, for example, the stem surface condition and the gap dimensions between the gland and the stem. With a packing like this, you hope, at best that using it will mean that an industrial valve will comply with the requirements of TA-Luft. However, this must still be verified in a test.

ISO 15848
ISO 15848 entitled “Industrial Valves – Measurement, test and qualification procedures for fugitive emissions” consists of two parts:

■ Part 1: Classification system and qualification procedures for type testing of Industrial Valves
■ Part 2: Production acceptance test of Industrial Valves

By contrast with TA-Luft, this standard does not just consider the sealing system of the stem/shaft seal; rather, it takes into account the entire Industrial Valve including the housing seals. Due to a type test, the Industrial Valve is classified into the following performance categories: Tightness class/endurance class/temperature class.

Specifying an Industrial Valve according to ISO 15848 provides the following benefits for purchasers:
■ Industrial Valves made by different manufacturers can be directly compared on the basis of the classification.
■ The complete Industrial Valve meets the requirements. This also applies in particular to the highly loaded stem thread with needle valves. TA-Luft only deals with the sealing system of the stem passage.
■ The specified mechanical and thermal load cycles ensure that the sealing elements demonstrate adequate leak tightness even after several heating and cooling phases.
■ Tightness class “A” allows a leak rate that is lower by a factor of ten than with TA-Luft at temperatures of less than 250 °C
Industrial Valves that are inspected according to ISO 15848 are labelled with the categories that have been achieved. Table below gives you an overview of possible classifications using the AS-Schneider ISO FE Type 2 as an example:

Example: AS-Schneider ISO FE Type 2 ISO FE A H – CO2 – SSA1 – t(-29°C, 200°C) – PN 420 – ISO 15848-1

Tightness class
A ≤ 10-6 mg • s-1 • m-1 = 1,32 • 10-7 mbar • l/s
(Stem- ø7,5mm)
B ≤ 10-4 mg • s-1 • m-1 = 1,32 • 10-5 mbar • l/s
(Stem- ø7,5mm)
C ≤ 10-2 mg • s-1 • m-1 = 1,32 • 10-3 mbar • l/s
(Stem- ø7,5mm)

Test fluid
H Helium gas – Tightness class AH, BH, CH
M Methane gas – Tightness class AM, BM, CM

Endurance classes (mechanical and thermal cycles)
Isolation valves
CO1 = 500 mechanical / 2 thermal cycles
CO2 = 1,500 mechanical / 3 thermal cycles
CO3 = 2,500 mechanical / 4 thermal cycles
Control valves
CC1 = 20,000 mechanical / 2 thermal cycles
CC2 = 60,000 mechanical / 3 thermal cycles
CC3 = 100,000 mechanical / 4 thermal cycles

Number of stem seal adjustments
SSA 0 = None, SSA 1 = One adjustment, SSA 2 = Two adjustments
A maximum of one adjustment is accepted for CO1, two for CO2 and three for CO3

Temperature class
Qualified temperature range

Test pressure
According to PN or ASME Class rating

Table: Designation/marking of an Industrial Valve qualified according to ISO 15848-1.

Future of ISO 15848
Currently, ISO 15848 is used mainly for process Valves. However, due to the advantages described above, there is an obvious trend towards this ISO standard being applied over a wide scope to Industrial Valves for measurement and control technology. With the increased demands placed on environmental protection, we expect a considerable rise in the demand for ISO 15848 Industrial Valves over the next few years. Since initially only being used in the field of oil and gas, the ISO standard is now of increasing importance in the chemicals industry.

At the moment, ISO 15848-1 is in the survey for revision. There are change requests to reduce the demanding requirements in places. The draft is available and changes for example are: The endurance class CO1 will be reduced from 500 cycles to 205 and to the tightness class “A” will be adapted by one power of ten to the level of TA-Luft. However, the AS-Schneider ISO FE Series shows that the currently demanding requirements can be achieved.

AS-Schneider ISO FE Series
AS-Schneider has several decades of experience in manufacturing high-quality sealing systems for reducing emissions like bellows upper parts or special packing systems, for example.

With its ISO FE Series, AS-Schneider has developed a Valve Technology that complies with the highest ISO15848-1 tightness class “A”. With a maximum permissible leak rate of 1,3 • 10-7 mbar • l/s (for a stem diameter of 7.5 mm), this class even exceeds the requirements of TA-Luft.

Type testing of the AS-Schneider ISO FE Series was carried out by TÜV Süd and lasted two weeks.

The ISO FE Series is the result of months of development and numerous tests on the company’s own industrial valve test stand. The initial cause for concern was the requirement of the high pressure of 420 bar (ASME Class 2500) and the large number of switching cycles. However, by careful selection and surface treatment of the materials AS-Schneider used and managed to get over this hurdle too.

Special properties of the AS-Schneider ISO FE Series:
■ High-strength stem thread with hard coating for safe, wear-free operation.
■ Non-rotating stem for low actuating forces and low wear of the sealing elements.
■ Special axial bearing of the stem/tapered connection for absorbing the highest spindle forces.
■ Non-wetted parts in 316 Stainless Steel for operation in a corrosive environment.
■ Sealing of the stem thread from dirt from the outside/the atmosphere.

Three different sealing systems are available for the AS-Schneider ISO FE Series. Pressure Rating Class PN 420/Class 2500 applies to all the types:

AS-Schneider Type Sealing System Performance Data
ISO FE Type 1 FPM O-ring + Graphite Packing:
Class A with 500 cycles / -29°C to 200°C
Class A with 1,500 cycles / -29°C to 40°C
Class B with 1,500 cycles / -29°C to 200°C

ISO FE Type 2 FPM O-ring + Graphite Packing:
Class A with 1,500 cycles / -29°C to 200°C

ISO FE Type 3 PTFE / Carbon-filled PTFE:
Class A with 1,500 cycles / -29°C to 40°C
Class B with 1,500 cycles / -29°C to 200°C

Table: Performance data of the AS-Schneider ISO FE Series
Bellows Sealed Valves – the “technically leakproof” solution
With very hazardous media even a minimal leak rate can be too great. In cases like these, you can use tried and tested AS-Schneider Bellows Sealed Valves.

To move the valve stem upwards and downwards without leaks, a multi-layer, metal bellow is used that is welded on the one side to the stem and on the other side to the valve bonnet. Therefore a leakage along the valve stem is not possible.

Special properties of AS-Schneider Bellows Sealed Valves:
■ Fully flushed, multi-layer stainless steel bellows secured against rotating, designed for 2,500 mechanical cycles
■ Bellows welded on one side to stem and on other side to valve bonnet
■ Non-rotating valve tip in Stellite 6 material
■ Safety packing
■ Available pressure classes: PN 100, PN 250, PN 400 on request Embedded data.

AS-Schneider – The material is what counts

Instrumentation valves and manifolds come into contact with many different types of media, each with unique characteristics. A bubble tight seat is always of utmost importance. Leak free service is important for both the operator and environment. AS-Schneider offers users a broad range of Soft Seated Valves and Manifolds with valve seats made of synthetic materials. To ensure safe, leak free operation based on the application, AS-Schneider offers a wide variety of seat materials depending on the pressure, operating temperature and process medium.

Soft seated valves and manifolds have proven to be safe and reliable solutions in countless applications, including, chemical plants, oil refineries and natural gas pipelines. In contrast to metal seated valves, their stem needle or seat pocket incorporates a synthetic seat. When the valve closes, the elastic seat material is compressed, creating a leak free, bubble-tight closure. This provides the highest possible safety and ensures accurate instrument calibration and measurement results.

AS-Schneider is one of the world’s leading manufacturers of Instrumentation Valves, Manifolds and Accessories. The family-owned company based in Nordheim (Germany), is a long-term partner of numerous renowned companies in various industries. Therefore AS-Schneider is able to draw on a broad range of practical experience and in-depth knowledge in the development and production of custom solutions.

Reliable solutions for the natural gas industry
AS-Schneider’s Soft Seated Instrumentation Valves and Manifolds are used in applications such as extraction and transportation of natural gas. Leak free valves and manifolds are critical for accurate measurement. Emissions monitoring of gas is required and gas is not allowed to escape into the environment for reasons of safety and environmental protection. Additionally leaking measurement installations can lead to incorrect measurements of pressure or flow. Incorrect measurement or “lost and unaccounted for” natural gas adds to higher operating costs. As a result it is critical for valves to be absolutely tight and operate consistently.

Raw natural gas comes from three types of wells: oil wells, gas wells and condensate wells. Depending on the type of well, it can be accompanied by a variety of other components, including crude oil, ethane, propane, butane, pentane, water vapor, carbon dioxide, helium and nitrogen. Sand, grit, dirt and hydrogen sulfide can also contaminate raw natural gas. In addition, producers add chemicals such as mercaptan, which gives natural gas its characteristic odor, as well as corrosion inhibitors and glycol to protect pipelines against moisture and freezing. These substances make raw natural gas into a highly aggressive and complex process medium that can corrode equipment, eventually causing damage.

The criteria are pressure, temperature and process medium
Selection of the right seat material is therefore very important. Not every material is resistant to all the components and additives in natural gas. Moreover, the materials have different limits in regard to operating temperatures and pressure. These factors must be considered to achieve long term reliable valve performance. AS-Schneider therefore offers a range of different soft seat materials, ensuring that its valves provide excellent long term performance.

AS-Schneider Valves and Manifolds have performed successfully over many years in numerous applications. Soft Seated Instrumentation Valves and Manifolds have a number of other advantages: they are safe and reliable, and the resilient synthetic material compensates for debris on the sealing surfaces. Also the seats are easy to replace, which prolongs the life of the valves in the case of aggressive or dirty process media. Users can replace the valve seat instead of the entire valve or manifold. This cuts repair costs and increases reliability: by performing regular maintenance, system operators can reduce the risk of leaks to a minimum. Embedded data.

AS-Schneider – Hard at work in the pipeline

With the Taurus Series, AS-Schneider, the specialist for industrial valves, presents a Series of Double Block & Bleed Pipeline Ball Valves, designed specifically for your application in the oil and gas industry. The valves are not only impressive with their sophisticated technology, but also with their unique and well-thought-out design.

The Taurus Series consist of a Double Block and Bleed Construction made of two shut-off valves (ball valve) and an expansion valve arranged in between and are available in sizes from one to six inches. Depending on the design, the ball valves are available in from Class 150 to Class 2500. The valves are thus especially suitable as a primary shut-off for oil and gas pipelines. For several years, AS-Schneider has worked together with numerous companies in the industry gaining sound expertise which has influenced the development of the new Series.

This is particularly reflected in the technical advantages of the Taurus Series: For example, the ball valves are especially compact and light. This simplifies installation, especially in tight or hard-to-reach places. The design is certified to the established industry standards, such as those of the American Society of Mechanical Engineers (ASME). Versions are available in various materials, including those for the body, ball seats and shaft bushings. This means that the Taurus Series can be perfectly adapted to the respective application. The Anti-Static Design prevents explosions; the ball valves have been tested for fire safety according to API 607 and ISO 10497.

The Taurus Series is available in a 2 or 3 Piece Design, both Flanged Style and with Side Entry. AS-Schneider also sets new standards visually: The ball valves have with a modern and attractive design that differs significantly from the products of other manufacturers. Hand wheels and levers also can be removed or locked in order to prevent tampering with the valves. Embedded data.

AS-Schneider – Manipulation Impossible

Valves play an important role when it comes to the safety of process equipment: Unauthorized access or accidental operation can quickly lead to catastrophic results. However, both these scenarios are easily prevented. AS-Schneider, the specialist in the field of industrial valves, provides a range of Anti-Tamper Valve Head Units to allow plant operators to reliably protect their valves against undesired operation.

The Standard Design of the Anti-Tamper Valve Head Unit is equipped with a bore and matching AT-Key. The valve can only be operated using this special key. The operator can also lock the bore using a padlock in order to prevent the insertion of the AT-Key. This makes it impossible to operate the valve. It can be securely locked in any position – closed, partially open or fully open.

Valves equipped with the ‘AT-Key Lock’ Design are operated using the built-in AT-Key which can be retracted a little way out of the Valve Head Unit. Once it has been retracted, it is no longer in contact with the stem and activation of the valve is no longer possible. The operator can insert a padlock, which makes it impossible to press in the Key again. The valve is now secured against unauthorized access. This design again permits the valve to be locked in any desired position.

AS-Schneider equips its Handwheel-operated Valves with a ‘Locking Plate’. This is a metal plate to which the Handwheel can be fixed in whatever position is required by means of a padlock. In this design, only minimum movement of the Handwheel is possible. It is particularly effective at preventing the unauthorized closure of valves. Embedded data.

AS-Schneider Increased reliability, reduced weight

Industrial valve specialist AS-Schneider has developed a manifold specially for use on FPSO vessels. The monoflange with Dual Double Block & Bleed Function is noteworthy for maximum operational reliability and minimum weight – properties that are critically important in floating systems for extraction of crude oil and natural gas.

AS-Schneider originally developed the manifold as a special solution for a renowned company from the energy sector. The company, which operated an FPSO vessel for offshore extraction of crude oil and natural gas, wanted to make its measuring equipment particularly reliable by using two Double Block & Bleed valves in series. Moreover, it wanted to keep the weight as low as possible. A combination of two separate valves was ruled out owing to the great inherent weight and resulting susceptibility to vibrations.

AS-Schneider’s product designers therefore set to work to find a way of mounting six valves – and therefore a Dual Double Block & Bleed Function – in one valve body. For this purpose they optimized the arrangement of the valves and the design of the connecting flow paths. The result is a monoflange with six integral valves which weighs only slightly more than a normal standard flange. The hook-up is therefore insensitive to oscillations and vibrations. As only one valve body is required, the risk of leaks is also low.

AS-Schneider was therefore able to comply fully with the customer’s requirements, namely maximum operational reliability and minimum weight for use at sea. Embedded data.

AS-Schneider – Display always in full view

Industrial valve specialist AS-Schneider has developed a new manifold for pressure gauges that gives process engineers greater flexibility in the planning of hook-ups. Gauges with a standard design as well as those with a top display can be connected in such a way that users can read them easily from the front.

Pressure gauge manufacturers generally offer their products with a choice of two different designs: the standard design, in which the display is oriented at 90 degrees to the process connection, or the top display, in which this angle is 180 degrees. Pressure gauges with a center back mount are an example.

On behalf of a manufacturer of measuring instruments, industrial valve specialist AS-Schneider has developed a new manifold that enables process engineers to plan and design the hook-up without having to think about what type of instrument to select. The manifold allows an instrument with top display to be mounted such that the display can be read from the front.

This custom solution was based on a dual manifold from AS-Schneider’s proven E Series. It allows the customer to read all pressure gauges without the need for a special hook-up or an elbow adapter. Process engineers have greater flexibility because they don’t have to consider the type of instrument in planning. “This new product is an example of our special strength,” says Rolf Kummer, managing director of AS-Schneider. “It shows that we are able to develop tailor-made solutions based on the needs of our customers.” Embedded data.