Nitrogen and Inert Gas Regulator with CGA-580 Inlet SS316 Single Satge

Main Application: Nitrogen and inert gases
Regulator Type: Single-stage diaphragm regulator
Gas Purity: Up to 6.0
Flow Coefficient: Cv 0.12
Valve Seat Material: PCTFE, PTFE
Diaphragm Material: SS316L, Hastelloy
Inlet Connection: CGA-580
Thread Connection: 1/4" NPT(F)
Leak Rate: 2 × 10^-8 atm.cc/sec He
Safety Pressure: 1.5 times the maximum input pressure
Weight: 0.9 kg

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Product Details

Product Tags

Product Overview

The LITEN R21 series is a single-stage, low-flow pressure regulator for gas cylinder and gas supply applications. The diaphragm design is available with a CGA-580 inlet connection for compatible cylinder configurations.

The R21 series offers a maximum inlet pressure of 6000 psi, an outlet pressure range of 0–250 psi, gas purity up to 6.0, and a Cv value of 0.12. Valve seat options include PCTFE and PTFE, while diaphragm options include SS316L and Hastelloy.

Product Parameters

Product Name	R21 Series Low-Flow Pressure Regulator with CGA-580 Inlet Connection
Model / Ordering Code	R21 Series / CGA-580 inlet configuration	Regulator Type	Single-stage diaphragm regulator
Gas Purity	Up to 6.0	Maximum Inlet Pressure	6000 psi
Outlet Pressure Range	0–250 psi	Flow Coefficient	Cv 0.12
Valve Seat Material	PCTFE, PTFE	Diaphragm Material	SS316L, Hastelloy
Thread Connection	1/4" NPT(F)	Inlet Connection	CGA-580
Applicable Temperature	−40°C to +74°C	Leak Rate	2 × 10⁻⁸ atm·cc/sec He
Safety Pressure	1.5 times the maximum input pressure	Weight	0.9 kg

Key Features

R21 single-stage low-flow pressure regulator

Single-Stage Diaphragm Regulation

The R21 series uses a single-stage diaphragm structure for low-flow pressure regulation.

Corrugated Diaphragm Design

The corrugated diaphragm design is specified for excellent sensitivity and cycle life.

R21 regulator with CGA-580 inlet connection

CGA-580 Cylinder Connection

The selected inlet connection is CGA-580 for compatible cylinder configurations; please confirm the cylinder connection and pressure rating before use.

Model Selection Guide

Use the R21 ordering information to specify the series, body material, body port, inlet and outlet pressure, gauge, inlet and outlet connections, and optional accessories. The CGA-580 option is listed under Inlet Connection.

Ordering Information

Series	Body Material	Body Port	Inlet Pressure	Outlet Pressure	Pressure Gauges	Inlet Connection	Outlet Connection	Optional Accessories	Selection Notes
R21	L: SS316L	A B G M J Q	M: 6000 psi R: 3000 psi K: 500 psi	F: 0–250 psi C: 0–100 psi B: 0–50 psi A: 0–25 psi	G: MPa P: psi/bar W: no gauges	01: 1/4" NPT(F) C330: CGA330 C580: CGA580 52: G5/8"-RH(F) 64: W21.8-14LH(F) More…	01: 1/4" NPT(F) C330: CGA330 C580: CGA580 52: G5/8"-RH(F) 64: W21.8-14LH(F) More…	B: Ball valve N: Needle valve R: Safety valve P: Center-mounted F: Fixed panel None	C580: CGA-580 inlet connection option Please contact LITEN for additional model selections.

Please contact LITEN to confirm the exact R21 configuration for your gas, cylinder, pressure, gauge, connection, and accessory requirements.

Get a Quick Quote: R21 Series Low-Flow Pressure Regulator with CGA-580 Inlet

Contact LITEN for product information, specifications, pricing, and quotation support.

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Application Scenarios

The R21 series is intended for pressure control in gas-cylinder and gas-supply applications using suitable inert, corrosive, toxic, flammable, or combustible gases. The CGA-580 inlet option is selected for compatible cylinder connections; please contact LITEN to confirm gas, cylinder, pressure, gauge, outlet, and accessory requirements before ordering.

R21 pressure regulator with CGA-580 inlet for a nitrogen cylinder connection

R21 low-flow regulator for inert gas cylinder pressure control

R21 regulator for corrosive gas supply systems

R21 regulator for toxic gas handling systems

R21 regulator for flammable gas pressure reduction

R21 regulator for combustible gas supply equipment

Production Process

Our R21 production workflow is organized around six stages: Structural Design, Material Selection, Blank Preparation, Sub-Assembly, Pressure Testing, and Marking.

Structural Design

Material Selection

Blank Preparation

Sub-Assembly

Pressure Testing

Marking

Certificates & Compliance Documents

LITEN maintains quality-management, conformity-verification, third-party testing and design-assessment documentation. Document scope, covered company, product category, model, material, manufacturing site and validity period may differ. Please contact LITEN for the latest document applicable to your required product and order.

ISO 9001 Quality Management

LITEN CE and PED verification of conformity document for listed pressure regulator models

CE/PED Verification

SGS third-party testing report page showing LITEN product tests

SGS Third-Party Test Report

ABS Design Assessment

Packaging & Delivery

Packaging is organized from clean-area preparation through sealed outer-carton shipment for orderly handling and delivery.

Cleanroom Packaging

Products are prepared and packed in a clean packaging area to help reduce contamination during handling.

LITEN product protected with foam or sponge inside the package

Protective Inner Packaging

Sponge or foam protection is used inside the package to help protect the product during transportation.

LITEN products individually packed in small boxes inside an outer carton

Individual Box Packing

Products are individually packed in small boxes and arranged inside the outer carton to reduce movement and contact.

LITEN outer cartons sealed with stretch film for shipment

Sealed Outer Carton

Outer cartons are sealed with stretch film or clear packing tape for orderly handling and shipment.

Frequently Asked Questions

How do I select the correct inlet and outlet pressure range for the R21 with a CGA-580 inlet?

For the CGA-580 inlet configuration, select the inlet-pressure option according to the cylinder supply pressure and the outlet-pressure option according to the required downstream pressure. The R21 ordering information lists 6000 psi, 3000 psi, and 500 psi inlet options and 0–250 psi, 0–100 psi, 0–50 psi, and 0–25 psi outlet options. Please confirm that the cylinder valve and its rated pressure match the selected CGA-580 connection before use, and contact LITEN to confirm the suitable configuration.

Can the R21 be customized or supplied with OEM branding?

Yes. LITEN supports customization for special specifications and application requirements, as well as OEM services. Please contact LITEN with your required pressure range, gas, flow rate, connection type, material, quantity, and branding requirements so that we can confirm the available solution.

What is the typical lead time?

Our standard lead time is typically 5–7 days. Please contact us to confirm the production schedule for your required model and quantity.

What is the minimum order quantity?

Orders can start from 1 piece, making this suitable for sample evaluation, replacement requirements, and small-volume orders.

What is the warranty period?

This product is covered by a one-year warranty from the date of receipt.

What happens if there is a product quality issue during the warranty period?

If the product has a quality issue within one year of receipt, we will provide repair service free of charge. The customer is responsible for the shipping cost of returning the product to China. We will cover the repair cost and the shipping cost of sending the repaired product back to the customer.

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