Pressure regulators – find manufacturers and suppliers

Pressure regulators are technical components that reduce the inlet pressure of a gas or liquid to a lower, constant outlet pressure.

They ensure that downstream systems or devices are supplied with a constant, safe pressure - regardless of how high the inlet pressure is or how much it fluctuates.

Below you will find an overview of how pressure regulators work, as well as an overview of their use and benefits:

How pressure regulators work:

Pressure regulators typically consist of a housing with two pressure chambers: A high-pressure side and a low-pressure side. Between them is a control valve, which is controlled by a spring and a diaphragm or piston.

1. High-pressure inlet: The medium, e.g. gas or water, flows into the pressure reducer at high pressure.
2. Control: The diaphragm is loaded by the pressure on the low-pressure side. If the outlet pressure is too high, the diaphragm presses against the valve and closes it partially or completely. If the outlet pressure is too low, the valve continues to open.
3. Constant outlet pressure: This control principle keeps the outlet pressure at a preset level regardless of the inlet pressure.

The spring force can often be adjusted manually to regulate the desired outlet pressure individually.

Use of pressure regulators :

Pressure regulators are used in many areas:

1. Building services:
In water installations, they prevent damage to fittings and pipes due to excessive water pressure and ensure a constant flow pressure.

2. Gas supply:
In gas cylinders, e.g. for welding, camping or medical applications, they reduce the cylinder pressure to a usable working pressure.

3. Industrial systems:
In pneumatic or hydraulic systems, they ensure that machines are evenly supplied with compressed air or oil.

4. Medical technology:
In respirators or oxygen supply systems, pressure reducers ensure safe and controlled delivery of the gas.

5. Laboratory technology:
Here they are used to protect sensitive measuring devices or reactions from pressure fluctuations.

Advantages of pressure regulators :

• Protection of lines, devices and systems against overpressure
• Constant operating pressure for stable processes
• Energy savings through targeted pressure regulation
• Increased safety in gas or pressurized systems

Pressure regulators are indispensable components in many technical systems that work with gases or liquids. Their main task is to reduce high inlet pressure to a constant, safe outlet pressure. Thanks to their reliable control mechanism, they make a significant contribution to the operational safety, durability and efficiency of systems and appliances.

Below you will find an overview of the most important points to consider when purchasing pressure regulators:

Several technical, safety-related and economic criteria play a role when purchasing pressure regulators. Careful selection is crucial for the safe, efficient and long-lasting operation of the entire system.

• First of all, the pressure regulator must be suitable for the respective medium, e.g. air, water, oxygen, acetylene, nitrogen, steam, oil. The materials of the housing, seals and diaphragms must be chemically compatible with the medium in order to prevent corrosion, embrittlement or leaks.
• Example: Only grease-free, specially cleaned and explosion-proof pressure reducers may be used for oxygen.
• The pressure regulator must be able to withstand the maximum inlet pressure and at the same time regulate precisely within the desired outlet pressure range.
• Check the maximum permissible inlet pressure.
• Make sure that the adjustable outlet pressure range matches the application.
• For sensitive applications, fine adjustment of the outlet pressure is important.
• One point that is often overlooked is the volume flow that the pressure reducer can handle. If the pressure reducer is dimensioned too small, pressure drops or unstable operation can occur with higher withdrawal quantities.
• It is important to specify the maximum flow rate in combination with a defined pressure - this should match the consumption profile of the connected appliances.
• Professional applications require precise pressure control without strong fluctuations. High-quality pressure reducers offer:
• Low pressure fluctuations with changing flow rates.
• Fast and stable response to load changes.
• Good control characteristics for both rising and falling pressure.
• Depending on the application, pressure reducers should have integrated or retrofittable safety elements:
• Pressure relief valves (secondary protection).
• Non-return valves, especially for gases to prevent backflow.
• Protection against bursting or explosion pressure, e.g. through appropriate design or accessories.
• The connections must match the existing lines or cylinder valves - both in terms of type such as internal/external thread, flange and size, e.g. G¼", G½", DIN standards.
• The space requirements and installation options, e.g. wall mounting, cabinet installation, should also be taken into account.
• The quality of the materials used has a direct impact on the service life and operational safety:
• Stainless steel or brass housing for robust applications.
• High-quality sealing systems e.g. EPDM, FKM, PTFE depending on the medium.
• Precise manufacturing for low leakage rates and stable control
• Special designs are required for aggressive or high-purity media, e.g. electropolished surfaces or silicone-free designs.
• Professional purchasing should also take long-term usability into account. Purchasing should pay attention to the following:
• Good availability of spare parts
• Possibility of maintenance and calibration
• Technical support from the manufacturer or dealer
• Pressure reducers are subject to strict requirements in many areas. Important standards and approvals are e.g:
• DIN EN ISO 2503 for pressure regulators.
• DIN EN 15614 for oxygen systems.
• PED Pressure Equipment Directive or PED.
• ATEX for use in potentially explosive atmospheres.
• BAM approval, e.g. for oxygen applications.
• These standards provide security in terms of quality, reliability and legal requirements.
• In addition to the purchase price, the additional operating costs should also be taken into account.
• A better quality pressure regulator is often more economical because it causes fewer failures, leaks or spare parts.

When purchasing pressure regulators, it is not just a matter of selecting a suitable model - it is also a matter of specifically matching it to the medium, pressure conditions, operating environment and safety requirements. Careful examination of all technical parameters, approvals and economic aspects ensures reliable, standard-compliant and sustainable operation.

Pressure regulators can be obtained from various suppliers. Comprehensive information about manufacturers and suppliers of Pressure regulators from all over the world can be found on Exportpages.