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HARRIS 425-125-346 Single-Stage Air & Inert Gas Regulator - Air & Inert Gas Regulators
HARRISAir & Inert Gas Regulators

HARRIS 425-125-346 Single-Stage Air & Inert Gas Regulator

The HARRIS 425-125-346 is a single-stage gas regulator for air and inert gases, featuring a CGA 346 inlet connection and a 9/16"-18 M RH outlet connection. It is equipped with a neoprene diaphragm and is rated for…

SKU 3G-OTH-358153

Also listed as: 425125346 · 425 125 346

Brand
HARRIS
Item
425-125-346 Single-Stage Air & Inert Gas Regulator
Part Number
425-125-346
Category
Air & Inert Gas Regulators
Available to Order
Also known as:425-125-346HARRIS
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Worldwide Shipping
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Compliance & shipping

Hazardous material
Not classified as hazardous
California Prop 65 warning
Warning appliesProp 65 warning
Licence required
No licence required
Safety Data Sheet
Not available
Special shipping
Ships under standard freight

Technical Specifications

HARRIS
Manufacturer Part Number
425-125-346
Type
CGA 346 Inlet, 125 psig, Breathing Air
UNSPSC
40142201
Features
Designed to Make it a Rugged, Long-Lasting Performer, Including An Exclusive Tamper-Proof, Self-Reseating Internal Hp Safety Valve; Pipelines Classic Kits
RH Outlet
9/16"-18 M
Standards
CGA E-4; UL Listed
CGA Number
CGA 346
Application
Industrial Purpose
Body Finish
Chrome Plated
Catalog Page
N/A
Control Type
Knob
For Gas Type
Breathing Air
Body Diameter
2.75 in
Body Material
Brass
Mounting Type
Cylinder
Overall Depth
4.5 in
Overall Width
6.75 in
Seal Material
PTFE
Gauge Diameter
2-1/2 in
Overall Height
6.5 in
Flow Coefficient
0.17
Inlet Connection
CGA 346
Number of Stages
Single Stage
Regulator Series
425
Country of Origin
USA (subject to change)
Outlet Connection
9/16"-18 M RH
Diaphragm Material
Neoprene
Product Description
These regulators are for use with oxygen and inert gases like argon, helium, and nitrogen. They are not compatible with fuel or corrosive gas.
Inlet Connection Size
0.825"-14
Inlet Connection Type
NGO
Inlet Thread Direction
Right Hand
Outlet Connection Size
9/16"-18
Outlet Connection Type
UNF
Inlet Connection Gender
Male
Outlet Thread Direction
Right Hand
Inlet Pressure (Maximum)
3,000 psig
Outlet Connection Gender
Male
Outlet Pressure (Maximum)
125 psig
Outlet Pressure (Minimum)
0 psig
Maximum Gauge Outlet Pressure
4,000 psig

Technical Documents

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HARRIS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HARRIS 425-125-346 is a single-stage gas regulator for air and inert gases, featuring a CGA 346 inlet connection and a 9/16"-18 M RH outlet connection. It is equipped with a neoprene diaphragm and is rated for 125 psig outlet pressure. This regulator is designed for breathing air applications.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the HARRIS 425-125-346 gas regulator used for?

The HARRIS 425-125-346 is a single-stage gas regulator designed for breathing air and inert gas applications. It reduces cylinder pressure to a consistent 125 psig outlet, making it suitable for respiratory protection systems, SCBA fill stations, and industrial air supply networks.

What are the specifications of the HARRIS 425-125-346 regulator?

The HARRIS 425-125-346 features a CGA 346 inlet connection and a 9/16"-18 M RH outlet. It has a neoprene diaphragm, a maximum outlet pressure rating of 125 psig, and is built for breathing air service. The single-stage design provides stable pressure control for continuous-flow applications.

Where to buy the HARRIS 425-125-346 regulator worldwide?

3G Electric supplies the HARRIS 425-125-346 regulator to customers worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this breathing air regulator.

How to install the HARRIS 425-125-346 single-stage regulator?

Install the HARRIS 425-125-346 by connecting the CGA 346 inlet to the cylinder valve using a compatible wrench. Tighten the 9/16"-18 M RH outlet to your downstream equipment. Always verify the regulator is rated for breathing air and check for leaks with a soap solution before pressurizing.

Used in

Common applications for HARRIS
Gas welding and cutting — HARRIS fuel gas regulators (e.g., 25-15C-300) for acetylene supply control
High-purity gas handling — HARRIS single-stage regulators (e.g., KH1044) for inert gas distribution in labs
Brazing operations — HARRIS Safety-Silv 45 alloy for joining HVAC copper lines
Flame safety — HARRIS 88-5FBHF-RL flashback arrestors on oxy-fuel torch systems
Preheating metal — HARRIS 1390-HA Series heating tips for acetylene-based preheating in fabrication
Brazing flux application — HARRIS Stay-Silv White FB3-A flux for phos-copper brazing in refrigeration repair
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HARRIS Products

3G Electric supplies HARRIS air & inert gas regulators. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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