Fergo Armaturen GmbH

When standard
is not enough.

Beyond
the
catalog.

A custom solution is a valve that is developed and manufactured specifically for your requirements — when standard products are not sufficient because the medium, pressure, temperature, material or space constraints impose special requirements.

Special materials

Duplex, Super Duplex, Hastelloy C-276, Inconel 625, Titanium Gr. 2 — for highly corrosive media and extreme temperatures.

Special sizes

DN8 to DN2000 and beyond — all flange standards DIN, ANSI, JIS. Intermediate sizes and transition pieces also available on request.

Special pressure ratings

High-pressure systems up to PN 630 and beyond — AD2000, ASME. Safety-critical applications with complete documentation.

Special actuators

ATEX Zone 1 & 2, SIL 2/3, fail-safe, exposure protection — electric, pneumatic, hydraulic for critical processes.

Special seals

PTFE, graphite, stainless steel spiral-wound gaskets, metal seals — for aggressive media, high temperature and high pressure.

Complete documentation

Material certificate 3.1 / 3.2, pressure test report, SIL verification, ATEX certificate, TA Luft compliance on request.





Custom solutions

When
standard
is not enough

Over 5,000 delivered projects — each one an individual solution to a real process challenge. Choose a product group and see what we can develop.

Specialized ball valve solutions for industrial projects

Our strength lies in the combination of technical flexibility and many years of experience. With over 5,000 delivered projects, we have the know-how to implement even complex requirements efficiently — from trunnion ball valves for high pressure to jacketed versions for the food industry.

Duplex-Kugelhahn aus Edelstahl F51 für Offshore-Anwendungen mit hoher Korrosionsbeständigkeit.

For an offshore application with a permanently salty atmosphere, a ball valve made of duplex stainless steel F51 was manufactured to customer specifications. The material selection ensures significantly higher
corrosion resistance than stainless steels such as V2A or V4A.

Edelstahl-Spindelverlängerung in kundenspezifischer Sonderlänge für metallisch dichtenden Kugelhahn zur sicheren Bedienung bei hohen Medientemperaturen.

Stainless steel stem extension, manufactured to a customer-specified length, for metal-seated ball valves in various sizes. Due to the high media temperatures in operation, an extended version was required to ensure safe operation and reliable thermal separation.

Kugelhähne mit C4-Beschichtung nach EN ISO 12944 für zuverlässigen Korrosionsschutz in anspruchsvollen Industrieumgebungen.

Ball valves for a customer project with special coating requirements for demanding environmental and temperature applications. The coating was applied in accordance with EN ISO 12944, C4 and implemented in two system variants (up to 120°C and up to 220°C) depending on the application. This ensures reliable corrosion protection and a long service life under difficult operating conditions.

Kugelhahn mit integriertem Heizmantel und pneumatischem Antrieb mit Vorsteuerventil.

Ball valve with heating jacket, operated via pneumatic actuator and pilot valve. The connection of the heating jacket was specially manufactured according to customer specifications. The application is in the food industry for a medium that solidifies at low temperatures. Heating in the valve area keeps the medium liquid and ensures safe, consistent flow.

Bodenablass-Kugelhahn mit Fail-Safe pneumatischem Antrieb für industrielle Tank- und Prozessanlagen.

A bottom drain ball valve with spring-return, normally closed actuator. Used in the chemical, pharmaceutical and food industries for safe bottom draining, contamination-free media handling and reliable fail-safe shut-off.

Duplex-Edelstahl Trunnion-Kugelhahn mit Scotch-Yoke-Antrieb für anspruchsvolle Offshore-Anwendungen.

Metal-seated trunnion ball valve made of duplex stainless steel (1.4470) with Scotch yoke actuator for high torques and reliable switching performance. Designed for offshore applications where high corrosion resistance and safe operation under harsh environmental conditions are required.

Specialized butterfly valve solutions for industrial projects

With over 5,000 delivered projects, customized butterfly valves are one of our core competencies. Whether high-temperature applications, vacuum operation, ATEX versions, C5-M coatings, special materials or customer-specific shaft extensions – we develop solutions precisely tailored to your process requirements.

Doppelt exzentrische Absperrklappe mit Stellungsregler, Endschalterbox und Filterdruckregler.

High-performance double-offset butterfly valve with positioner, limit switch box and filter pressure regulator. By using a Doppler, the integration of the limit switch box and positioner was implemented optimally. Stainless steel tubing is carried out in-house and executed by experienced technicians precisely, robustly and in an operator-friendly manner.

Metallisch dichtende, doppelt exzentrische Absperrklappe mit Temperaturverlängerung für Hochtemperaturanwendungen.

Metal-seated, double-offset butterfly valve with temperature extension. This version is used when media temperatures exceed 230°C — a typical application for metal-seated high-performance butterfly valves.

Große Lug-Absperrklappe DN700 mit EPDM-Dichtung und elektrischem Antrieb für industrielle Wasseranlagen.

Butterfly valve DN700 in lug design with EPDM seat, driven by an electric AUMA actuator and 4–20 mA positioner. Used in water treatment plants for easy control via the position of the Disc. Large sizes are also no problem for us — we offer short delivery times and reliable project execution.

Specialized knife gate valves for industrial projects

Standard solutions often reach their limits with knife gate and rectangular slide gate valves. With over 5,000 successfully delivered projects, we develop customer-specific solutions for demanding process conditions — with special materials, high-temperature versions, corrosion protection systems, and individual connection and actuator concepts.

Pneumatisch betätigter Rechteckschieber in Sonderausführung mit reduzierter Bauhöhe.

Limited installation space often requires more than a standard solution. This pneumatically operated rectangular slide gate valve was developed specifically for a reduced overall height and precisely adapted to the customer’s installation situation.

Pneumatisch betätigter Plattenschieber mit C5-M-Beschichtung für Offshore- und maritime Anwendungen.

Pneumatically operated knife gate valve with special C5-M coating for offshore applications. Developed specifically for salty air and use in maritime environments.

Plattenschieber mit kundenspezifischer Sonderlackierung nach vorgegebenem Farbcode.

Special coating for a knife gate valve according to a customer-specified color code. The version was implemented exactly as specified.

Rechteckschieber aus Edelstahl 1.4401 mit FDA-konformen Dichtungen für die Lebensmittelindustrie.

Specially manufactured rectangular slide gate valve for the food industry to customer-specified dimensions and hole patterns. Made of stainless steel 1.4401 (316) with FDA-compliant seals and seat materials for safe use in food-related applications.

Projekt mit Plattenschiebern und einfachwirkendem pneumatischem Antrieb in Serienausführung.

Need high quantities of knife gate valves with single-acting actuator in the shortest possible time and at the best conditions? We have the experience and project expertise to implement exactly such requests reliably.

Our standardized process ensures that your custom solution is delivered on time, fully documented and technically flawless — with no surprises.


You describe your requirements — medium, pressure, temperature, material, standard, installation situation. By email,
phone or form.


Our engineering team analyzes the requirements and gets back to you within 24 hours with a proposed solution.


You receive a detailed quotation with specification, lead time and price. Free of charge and without obligation. Approval
by email is sufficient


Production to your specifications. Pressure test, material testing and all required certificates are prepared in parallel.


Delivery with complete documentation. Our team is also available for technical questions after delivery.

Fergo custom solutions are used in the most demanding industrial processes worldwide — wherever standard valves reach their limits and reliability, corrosion resistance or explosion protection are critical.

Chemicals & Petrochemicals

Highly corrosive acids, alkalis and solvents require special materials such as Hastelloy, duplex or PFA lining. ATEX actuators for potentially explosive areas.

Pharmaceuticals &
biotech

Aseptic versions, FDA-compliant materials, sterilizable surfaces. Full-bore and leak-tight designs.

Energy technology

High-pressure steam systems, power plants, geothermal — high-pressure valves up to PN 630, high-temperature versions up to +600°C.

Offshore & marine

Seawater-resistant materials, cathodic protection, NORSOK compliance, titanium, super duplex for marine environments.

Water & wastewater

DVGW-approved custom solutions for drinking water and sewer systems. Large sizes, coated versions, trench protection.

Food &
beverages

Hygienic designs, EHEDG-compliant, FDA-approved. Stainless steel 1.4404, electropolished, suitable for CIP/SIP.