Custom valves: design, manufacturing, and tailored solutions for industry

What are custom valves and when are they needed?

 A custom valve is a fluid control unit designed and manufactured specifically for a particular use case, matching the operating principle (direct-acting, pilot-operated, modulating control), body and internals materials (stainless steels, special alloys, coatings), geometry and trim (seat, plug, Kv/Cv, leakage class), connections (DIN/ANSI flanges, thread, clamp, BW/SW), and actuation (self-operated, pneumatic, electric, or hydraulic) to the actual process data (fluid, flow, P1/P2, ΔP, T, viscosity, phase, and chemical compatibility).

The result is a certified, traceable assembly that meets regulations (PED/CE and, where applicable, ATEX) and the customer’s operating and maintenance requirements.

When a standard valve is not enough

Catalogs cover most needs, but a standard model can fall short or be oversized when:

Typical industrial scenarios

Key benefits of a tailored solution

In short, a custom valve protects the process, reduces costs and risks, and ensures the equipment performs exactly as the application demands, even under extreme conditions where a standard solution falls short.

How we design and manufacture custom valves, step by step

Every project starts with a technical conversation. Our team gathers the actual process data (fluid, minimum and maximum flows, inlet and outlet pressures, temperature, fluid state, and installation constraints) and validates the most likely operating and failure scenarios with the plant.

It is not just about filling out a data sheet: we cross-check P&ID diagrams, available space, the customer’s internal standards, and maintenance requirements to understand the full context in which the valve will operate.

With that operating map defined, we move on to design. We select the most suitable operating principle (self-operated, modulating control with pneumatic actuator, pilot-operated solutions), size by Kv/Cv, and establish the trim architecture to prevent cavitation, erosion, or noise.

In parallel, we choose body and internals materials based on chemical and thermal compatibility: stainless steels, special alloys, or coatings; packing and metal or soft seats according to the required leakage class; and connections that make integration easy (DIN/ANSI flanges, BSP/NPT threads, sanitary clamp, BW/SW). The goal is for the valve not only to comply, but to fit naturally into the existing system.

Before manufacturing, we verify the design through calculation and simulation. We analyze the pressure drop across the entire flow range, check the dynamic response to disturbances, and review noise levels and cavitation risk at the most demanding points. This stage lets us fine-tune geometries, plug travel, and adjusting springs to ensure stability and accuracy from day one.

Manufacturing is carried out under certified procedures, with full material traceability. We machine and assemble to tight tolerances, and every valve undergoes functional and tightness tests in accordance with European regulations (PED/CE) and, where applicable, ATEX requirements. If the project calls for it, we perform additional actuation tests, curve characterization, and specific validations agreed with the customer.

We always deliver with clear technical documentation: specification sheet, drawings, material certificates, test protocols, and an installation, operation, and maintenance manual. After delivery, we provide close after-sales support. We assist with start-up, answer installation questions, and offer spare parts kits and preventive maintenance plans to maximize plant availability.

Configurable variables

At Valfonta, we offer a broad catalog of valves for industrial systems

In addition to developing tailored solutions, at Valfonta we offer a complete range of products for fluid control and safety: pressure reducing valves (direct-acting and balanced), pressure relief and excess pressure valves, control valves with pneumatic actuator for on/off or modulating service, as well as steam and liquid injectors and ejectors. This breadth allows us to cover everything from auxiliary applications to critical processes with demanding precision, reliability, and traceability requirements.

Our work is built on a continuous innovation approach: materials and trims optimized against cavitation and noise, easy-maintenance designs (top-entry access where applicable), instrumentation that integrates with PLC/SCADA, and manufacturing with certified traceability. We operate under quality and sustainability criteria, prioritizing energy efficiency, service life, and waste reduction, and complying with European regulations (PED/CE and, where applicable, ATEX).

We believe in collaborative engineering: we size by Kv/Cv from actual process data, validate chemical and thermal compatibility, and adapt connections, actuators, and leakage classes to the plant standard. The result is stable performance, lower OPEX, and shorter shutdowns, thanks to genuine spare parts and preventive maintenance plans.

Can we help you define the optimal solution for your installation? Contact our technical team: we will analyze your case and propose a valve (standard or custom) that maximizes safety, efficiency, and availability.