Brand: Swagelok

Swagelok KPR Series Regulator

Name: Swagelok KPR Series Regulator – Datasheet & Price Quote
Brand: Swagelok

Description

Overview

Swagelok KPR Series Regulator is a spring-loaded, general-purpose pressure-reducing regulator engineered to provide the reliable, sensitive pressure control that fluid system safety depends on. Combining an all-metal, convoluted diaphragm sensing mechanism with a two-piece cap design, the Swagelok KPR Series Regulator delivers excellent accuracy, sensitivity, and setpoint pressure stability in a compact footprint suited to instrumentation, laboratory, and general industrial gas and liquid systems.

With fast quotation turnaround and technical support, Seven Star LLC proudly supplies the Swagelok KPR Series Regulator to industrial, laboratory, and process customers across Oman and the wider GCC. Seven Star LLC supplies Swagelok KPR Series Regulators on request with manufacturer documentation and local technical support – serving facility engineers and procurement teams in Muscat, Sohar, and Salalah.

Working Principle

The Swagelok KPR Series Regulator operates as a spring-loaded, direct-acting pressure-reducing regulator. An all-metal, convoluted, non-perforated diaphragm acts as the sensing mechanism, balancing downstream outlet pressure against the force of a range spring set by the operator’s handle. As outlet pressure rises above the setpoint, the diaphragm moves to close the poppet against its seat, reducing flow and pressure; as downstream pressure falls, the spring force reopens the poppet, admitting more flow until balance is restored.

This design gives the Swagelok KPR Series Regulator its defining characteristics: the metal-to-metal diaphragm seal and low internal volume improve response speed and sensitivity, while the convoluted, non-perforated diaphragm geometry enhances sensitivity further and extends service life compared with flat-diaphragm designs. A high-flow, dual-gauze filter positively retained in the inlet port protects the seat and internal components from particulate contamination carried in the supply gas or liquid, reducing the risk of seat damage and premature maintenance.

Engineering Design of the Swagelok KPR Series Regulator

The Swagelok KPR Series Regulator is constructed with a 316 stainless steel body and is available with PCTFE or PEEK seat materials to match cleanliness and chemical compatibility requirements. The regulator supports maximum inlet pressures up to 3600 psig (248 bar) with pressure control ranges spanning from 0 to 25 psig up to 0 to 500 psig depending on configuration, and operates across ports including 1/4 in. female NPT, tube butt weld, and VCR gland connections in several port configurations.

The two-piece cap design applies linear load directly onto the diaphragm seal, improving consistency of setpoint control across the pressure range. Handle options include knob, thumbwheel, and antitamper styles to suit both frequent field adjustment and installations where setpoint security is a priority. Isolation valves and adjustable regulator relief valves can be factory-assembled onto the KPR Series, allowing a single ordered part to combine shutoff or overpressure protection with pressure reduction in one compact assembly.

Key Features

The Swagelok KPR Series Regulator combines sensitivity, contamination protection, and configuration flexibility that make it a standard choice for general-purpose pressure reduction duty.

An all-metal, convoluted, non-perforated diaphragm delivers greater sensitivity and enhanced service life compared with conventional diaphragm designs.
A metal-to-metal diaphragm seal and low internal volume improve response speed and setpoint stability.
A high-flow, dual-gauze filter positively retained in the inlet port protects the seat from particulate contamination.
The two-piece cap design applies linear load on the diaphragm seal for consistent, repeatable pressure control.
Maximum inlet pressure up to 3600 psig (248 bar) with multiple pressure control ranges from 0 to 25 psig up to 0 to 500 psig.
Available in PCTFE or PEEK seat materials to match cleanliness and chemical compatibility requirements.
Isolation valves and adjustable regulator relief valves can be factory-assembled onto the regulator body.
Knob, thumbwheel, and antitamper handle options support both frequent field adjustment and setpoint security.

Industrial Applications

The Swagelok KPR Series Regulator is deployed across laboratory gas systems, instrumentation and control panels, oil and gas facilities, and general industrial process systems wherever sensitive, stable downstream pressure control protects sensitive equipment from overpressure damage. Typical duties include cylinder pressure reduction, instrument air supply, calibration gas systems, and general process pressure control across a wide range of gases and compatible liquids.

With engineering support in Muscat, Seven Star LLC supplies the Swagelok KPR Series Regulator to refineries, petrochemical complexes, and industrial facilities throughout Oman and the GCC. The regulator is a strong fit for instrumentation and laboratory gas systems across the Sohar and Salalah economic zones, as well as for oil and gas, research, and manufacturing plants across Muscat that require dependable, field-serviceable pressure reduction.

Technical Specifications

The table below summarizes the core specifications of the Swagelok KPR Series Regulator as supplied by Seven Star LLC.

Parameter	Specification
Model	Swagelok KPR Series
Regulator Type	Spring-loaded, pressure-reducing, single or dual stage
Body Material	316 Stainless Steel
Sensing Mechanism	All-metal, convoluted, non-perforated diaphragm (X750 alloy)
Seat Materials	PCTFE, PEEK
Maximum Inlet Pressure	Up to 3600 psig (248 bar)
Pressure Control Range	0 to 25 psig up to 0 to 500 psig (configuration dependent)
Maximum Temperature	176°F (80°C)
Ports	1/4 in. Female NPT, tube butt weld, VCR gland
Handle Options	Knob, thumbwheel, antitamper
Typical Applications	Laboratory gas, instrumentation, oil & gas, general process

Request a Quote for Swagelok KPR Series Regulator

Seven Star LLC supports the full procurement cycle for the Swagelok KPR Series Regulator, from formal RFQ submission to availability and lead time confirmation, technical datasheet delivery, and direct consultation with our instrumentation division on port configuration, pressure range, and seat material selection for your application. Backed by manufacturer datasheet documentation, we supply every Swagelok KPR Series Regulator with manufacturer documentation and local technical support. Contact Seven Star LLC today to request a quotation or discuss your pressure control requirements.

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About brand

Swagelok is the American maker of tube fittings and small-bore valves, best known for its two-ferrule compression tube fitting. Fred A. Lennon and Cullen B. Crawford founded it in Cleveland, Ohio, in July 1947 as Crawford Fitting Company to make that fitting. Lennon bought the whole business and the patent in 1948, and the company has been based in Solon, Ohio, since the mid-1960s.

Seven Star LLC is an independent supplier in Muscat. We list Swagelok tube fittings, needle, ball, check, relief and metering valves, filters, regulators and sample cylinders, and supply them for instrument tubing and analyser systems in Oman and the GCC by exact part number.

Swagelok company profile

Established	July 1947, Cleveland, Ohio, as Crawford Fitting Company
Founders	Fred A. Lennon and Cullen B. Crawford; Lennon bought out Crawford in 1948
Headquarters	Solon, Ohio, since the mid-1960s
Product families	Tube fittings and adapters, face seal fittings, needle, ball, plug, check, relief and diaphragm valves, filters, regulators, quick-connects, sample cylinders and hoses

Milestones

1947: Fred A. Lennon and Cullen B. Crawford found Crawford Fitting Company in Cleveland in July.
1948: Lennon buys out Crawford.
Mid-1960s: Headquarters move to Solon, Ohio.

Swagelok products we list

Family	Models	Typical use
Tube fittings	Overview, SS-810-6 union, SS-810-3 tee, SS-810-9 elbow, SS-810-4 cross, SS-810-1-8 male connector, SS-810-7-8 female connector, SS-810-61 bulkhead, SS-12M0-6 metric union, VCR face seal	Leak-tight connections on instrument and process tubing
Needle and metering valves	SS-1RS4, SS-1RF4, SS-18RF6, SS-6NBS6, SS-20VS4, SS-4MG	Isolation and fine flow adjustment on instrument lines and sample systems
Ball and plug valves	40G, 40GX 3-way, 60 Series, 83 Series, P4T plug	Quick quarter-turn shut-off and switching
Check, relief and sealed valves	SS-4C-1, CH, R3A, RL3, SS-4BK bellows, SS-DLS4 diaphragm	Backflow prevention, overpressure relief and leak-free sealing for toxic or high-purity media
Filters, regulators, sampling	SS-4F-2, SS-4TF-7, KPR regulator, sample cylinders, QC quick-connects	Analyser sample conditioning and gas or liquid sampling

A Swagelok part number can be read directly. In SS-810-6, "SS" is 316 stainless steel, "810" means a 1/2 in. tube fitting (8 sixteenths of an inch, 10 series), and "-6" is a union. A suffix such as "-8" adds a 1/2 in. NPT end, and "M0" marks metric tube, as in SS-12M0-6 for 12 mm. Tube fittings must be made up the same way every time: finger-tight, then 1 1/4 turns for most sizes. A gap inspection gauge confirms the fitting has been pulled up.

Where Swagelok products are used

In Oman and the GCC, Swagelok fittings and valves are used on instrument impulse lines, analyser sample systems, hydraulic and pneumatic control tubing, chemical injection and gas sampling in oil and gas, refining, petrochemical, power and laboratory installations.

Ordering Swagelok products: what we need

Send the full Swagelok part number (for example SS-810-6 or SS-1RS4), the material, and the tube size in inches or millimetres. For valves, add the end connections and any options. For sample cylinders, add the volume, pressure rating and end configuration.

Facts checked against Swagelok company history, October 2026.

Browse Swagelok products by category: Pipes & Fittings, Regulators, Fittings & Valves.

FAQ

Questions about the Swagelok KPR Series Regulator

Answers from our engineering team on installation, compatibility and integration.

01What makes the diaphragm in the Swagelok KPR Series Regulator different from standard regulators?

The KPR Series uses an all-metal, convoluted, non-perforated diaphragm rather than a flat diaphragm. This geometry increases sensitivity and extends service life, while the metal-to-metal diaphragm seal and low internal volume improve response speed and setpoint stability.

02What is the maximum inlet pressure the KPR Series Regulator can handle?

The Swagelok KPR Series Regulator supports maximum inlet pressures up to 3600 psig (248 bar), with pressure control ranges from 0 to 25 psig up to 0 to 500 psig depending on the specific configuration selected.

03Can the KPR Series Regulator be ordered with a built-in shutoff valve?

Yes. Isolation valves and adjustable regulator relief valves can be factory-assembled onto the KPR Series, allowing a single ordered part to combine shutoff or overpressure protection with pressure reduction in one compact assembly.

04What seat materials are available for the KPR Series Regulator?

The regulator is available with PCTFE or PEEK seat materials, allowing selection to match the cleanliness and chemical compatibility requirements of the specific gas or liquid application.

05Is Seven Star LLC an experienced supply partner for Swagelok products?

Yes, Seven Star LLC is an experienced supplier of Swagelok in Oman and the GCC. We supply genuine Swagelok products with manufacturer documentation and local technical support.