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Swagelok regulators

Swagelok's single- and double-stage spring-loaded regulators and K-series instrumentation regulators, along with process pressure regulators, provide stable pressure control to ensure predictable results in various industrial processes. High-purity, high-flow (HF Series) regulators provide reliable pressure control in applications requiring optimum process purity.

Essential Regulators Literature 2024

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Swagelok regulator design and manufacturing

Swagelok regulators' reliability is the product of advanced product design, the industry's strictest manufacturing process controls, and performance verification through rigorous testing protocols. Benefits include:

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Reliability

Swagelok verifies performance through burst, fluid dynamic, SPE, and life cycle tests.

Reliability

Solutions

Whatever your application or industry, we will think with you and find a regulator that meets your requirements.
Solutions

Certificates

Numerous certifications confirm that our regulators meet industry specifications.
Certificates

Material

Swagelok stainless steel contains at least 17% chromium and 12% nickel, which is above ASTM specifications.
Material

Production

We ourselves forge, machine, electropolish, weld, and test each Swagelok regulator.
Production

Product Test Reports (PTRs)

Swagelok publishes the most comprehensive Product Test Reports (PTRs) for regulators in the industry.
Product Test Reports (PTRs)

Expertise

Reliable answers and support are available. This can be a visit at your location or through Swagelok's office in Waddinxveen. We offer extensive knowledge worldwide.
Expertise

Stock

We receive products daily from our facility in America. You can count on fast deliveries of standard products.
Stock

Warranty

Swagelok guarantees every product component, assembly and service with its industry-leading warranty.
Warranty
How Swagelok Regulators Work
How does a controller work?
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How Swagelok Regulators Work

A pressure regulator uses a piston or diaphragm as a sensing element. This element faces a spring-induced load force (FS) on one side and the system fluid's force (F) on the other. In a pressure-reducing regulator, it maintains near-constant pressure despite varying inlet pressure and flow by balancing the fluid force (F) with or slightly below the load force (FS), opening the poppet. A back-pressure regulator prevents inlet pressure from exceeding a set level, opening or closing the poppet based on whether fluid force (F) matches or falls slightly below the load force (FS), to manage pressure variations.

RS and RSH series
RS and RSH design
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RS and RSH series

Swagelok's RS series regulators offer poppet designs, diaphragm or piston sensing, and various materials for different conditions, with spring-loaded control and options for adjustment. Constructed from 316L stainless steel for corrosion resistance, they handle pressures from 232 to 10,150 psig. The RSH series caters to high pressures, while the LRS and LPRS focus on low pressure, high accuracy. Options include gauge connections, self-venting, filters, feedback, antitamper features, special cleaning (ASTM G93 Level C), and compliance with NACE MR0175/ISO 15156.

K series
K Series cross section
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K series

Swagelok's K series regulators feature fine-pitch threads for precise, low-torque spring adjustment and an all-metal diaphragm for sensitive pressure balance. Their convoluted design enhances sensitivity and durability, while a piston option supports higher pressures. Adjusting the handle controls pressure by moving the poppet. The two-piece cap design ensures even diaphragm pressure, preventing damage during assembly. Additionally, a poppet damper aligns and stabilizes the poppet, minimizing vibration. To protect against system debris, these regulators come with a removable 25 µm filter.

Control pressure with Swagelok regulators & assemblies

Scroll below to see some of the regulators we offer. To choose among them, first consider functionality, then inlet pressure, then outlet pressure. Finally, consider sizing, materials of construction, and how it connects into the larger system. Want a hand? Please use the "Ask your Questions" button.

K series regulators
K series regulators
The K Series includes 17 pressure reducing, back pressure and special regulators. Variants are suitable for maximum inlet pressure and control ranges up to 10,000 psig/ 689.5 bar Includes 25 µm inlet filter.
Process series regulators
Process series regulators
Process regulators have both soft and hard seals for pressures of 1,015 psig/ 70 bar and 10,150 psig/ 699.5 bar, respectively. Tank blanketing options are suitable for handling contaminants and vapors.
Regulators assemblies
Regulators assemblies
These assemblies offer common configurations for single- or double-stage gas cylinders or in-line service with K-series regulators. Many options and configurations are available.
Filter holder assemblies for the K series
Filter holder assemblies for the K series
These assemblies combine the "circlip" ring, mesh and filter in one piece, improving sealing integrity around the inlet port. NPT ports are machined to additional stringent standards.
KV series regulators
KV series regulators
Removable heating element vaporizes liquids or preheats gases to prevent condensation. Diaphragm or piston detection. KEV regulators have ATEX, IECEx and CSA certifications.
HF series regulators
HF series regulators
High-flow manual gas regulators use a spring load and a special pressure sensing assembly for precise outlet control. The pressure is adjustable by turning the lever.

Our local team offers quick quotes, product selection advice, and daily shipping. If we can help in any way, please message us.

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Swagelok gas distribution program

Problems with gas distribution can lead to gas loss, low product quality, delays and hazards. A well put together gas distribution system offers a solution.

We provide detailed analysis to support controller selection, identify system upgrades and develop solutions. We perform inspections and consulting, then deliver a fully designed system with minimal bolted connections to prevent leaks. The system is clearly labeled for safety and functionality, and is easy to operate and maintain. Your system is assembled and tested before it leaves our workshop and is backed by Swagelok's comprehensive warranty. Please refer to the following section for detailed documentation on this option.

Saving with fully built assemblies

At our location in Waddinxveen, we design, manufacture and test gas & liquid system assemblies for customers.

To produce assemblies that meet your needs, we combine safe, reliable Swagelok components. This may be for the purpose of analytical instrumentation, grab sampling, hydrogen systems and other applications. Your idea is discussed with you, possibly complemented by us with design support, fabrication, assembly and pressure testing.

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Frequently asked questions

What types of regulators does Swagelok have?

Two main types: K Series and RHPS Series.

Swagelok's K Series regulators are common in analytical instrumentation applications. Swagelok RHPS Series regulators are an excellent starting point for general gas pressure regulator needs. RHPS regulators feature a soft or hard seal for pressure demands up to 1,015 psig and 10,150 psig, respectively.

Pressure-reducing regulators reduce a high pressure to a low pressure. This is usually what people have in mind when they think of pressure regulators. Back-pressure regulators control an upstream pressure. These regulators are very often used when a minimum upstream needs to be maintained through a system or where very fine overpressure control is needed. A video above on this page covers key concepts.

How do I select the right size regulator?

At Swagelok Netherlands, we usually ask a combination of five basic questions:

  1. What type of regulator will you use? Usually it will be a pressure reducing regulator or a back pressure regulator.

  2. What are the inlet and outlet pressure ranges? Generally , you want a regulator designed to operate within a range beyond the pressures you are using. For example, if the desired outlet pressure is 500 psi / 34.5 bar, you don't want the control range to be 0 - 500 psig / 34.5 bar. Ideally, it should be rated at twice that. The middle is where you get the most accurate reading.

  3. Is the regulator for gas or a liquid ? Gases can be compressed, but liquids cannot. That makes liquids a little easier to deal with.

  4. What is the operating temperature?

  5. What is the flow requirement?

How do I get help with regulators?

Below are three options.

  1. Customer Service: Our experts are happy to help you find just the right configuration that is well suited to your application. Click the "Ask your Questions" button on this page to start the process.

  2. Urgent technical support: Do you have an urgent technical problem? Get help diagnosing and solving gas and fluid system problems by contacting the Technical Competence center.

  3. Custom assemblies: You can choose a fully built, leak-tight assembly that fits your system exactly. Design support, fabrication, assembly, testing, documentation and installation support are included.

Are other brands interchangeable with Swagelok?

Do not mix or interchange product components with those of other manufacturers. Doing so voids the Swagelok warranty.

Can you help us troubleshoot a regulator?

Yes, our Field Advisors do that. Here are tips.

A regulator not operating as expected can affect the entire system, making it critical to determine the issue quickly. We recommend talking our Swagelok Field Advisors -- our elite problem solvers. Just click a green button on this page to get the ball rolling.

Keep in mind that every regulator is susceptible to creep. That's an increase in outlet pressure that occurs when pressure escapes, even though the poppet is closed.

The root cause of the problem is in the seat itself. Regulator seats can be compromised by particulates in the process stream, which can cause minor imperfections in the sealing surface. The high flow and small orifice that is created in a pressure regulator combine to turn a very small particle into a fast projectile. This projectile can nick the sealing surface of the seat and cause leakage. Any other damage to the poppet or the seat can also cause creep. Using a regulator with a soft seat can reduce the opportunity for creep.

One good way to prevent creep is with upstream filtration. Make sure you are removing all particulates from the process stream before it reaches the regulator. Some regulators include an integral filter upstream of the seat to help protect the seat. This small filter can reduce the potential for creep and increase the life expectancy and accuracy of your regulator.

What is droop and how do we stop it?

Here's a A droop definition & tips on minimizing.

An increase in flow causes a decrease in outlet pressure in the case of pressure reducing regulators. This is called droop. It is primarily caused by the set spring. The more flow required, the more the set spring relaxes and loses load force, causing the outlet pressure to drop.

Droop can be prevented in several ways. By using a longer spring or by using a dome loaded regulator, the effect of droop can be minimized. You can also use a regulator with external feedback or with a pilot regulator, as they have flatter flow curves than a spring loaded regulator.

We will help you identify the right regulator, including configuration, construction materials and optional features for a specific application.

Is this regulator in stock and what is the price?

For personalized, up-to-the-minute answers to sales and support questions, please use green buttons on this page to request details/quote.

If you prefer to find answers yourself, visit products.swagelok.com, register for an account, and start exploring. Anyone can register, and completing the entire registration form will allow you to view pricing, order online, request quotes, store favorite products, assign customized part numbers, and save or forward your shopping cart.

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