High-Pressure CGA350 Brass Valve – Hydrogen & CO Service | 3,360–4,000 PSI | Forged Brass Construction

This CGA350 high-pressure valve is precision-engineered for hydrogen and carbon monoxide gas service, offering exceptional reliability, safety, and performance. Manufactured using automated assembly and testing processes, this valve is 100% helium leak tested and built to meet the most stringent international performance standards.

Valve Construction:

Heavy-duty forged brass body for durability and high-pressure applications

Precisely machined internal components for optimal sealing and performance

Unitized plug Pressure Relief Device (PRD) for excellent flow, proper assembly, and tamper resistance

Enhanced metal-to-metal seal below bonnet threads prevents pressure buildup in thread area

Direct-drive stem design with optimized O-ring (GSV) or double O-ring (GSVH) seals for low-friction, smooth operation

Inlet tapped (1/4" NPT) for dip tube installation if required

Designed and tested for long service life under demanding conditions

Specifications:

Gas Service: Hydrogen (H₂) and Carbon Monoxide (CO)

Outlet: CGA350

Inlet Thread Size: 3/4" NGT

Outlet Thread Size: .825-14 NGO LH Ext.

Maximum Working Pressure Options: 3,360 / 3,775 / 4,000 PSI

Operating Temperature Range: -50°F to +149°F

Storage Temperature Range: -65°F to +155°F

Leak Rate (Internal/External): 1×10⁻³ atm cc/sec

Cv Flow Factor: 0.690 (standard)

Cycle Life: Minimum 2,000 cycles

Torque Ratings:

Closing Torque: 20–30 in.-lbs.

Operating Torque: 10–20 in.-lbs.

Bonnet Installation Torque: 50–60 ft.-lbs.

Handwheel Nut Installation Torque: 25–45 in.-lbs.

PRD Installation Torque: 25–35 in.-lbs.

PRD Flow Capacity: 60 CFM @ 100 PSI

Key Features & Benefits:

Reliable performance for high-pressure gas systems

Low operating torque for smooth manual operation

Extended cycle life for long-term service

Meets international safety and performance standards

Ideal for OEMs, gas distributors, and high-purity system integrators

Applications:

Perfect for use in hydrogen fueling systems, carbon monoxide distribution, industrial gas cylinders, specialty gas supply, and high-pressure gas control systems.

Pre-purchase inspections are welcomed during normal business hours upon appointment scheduled in advance. We would be happy to provide a complimentary transportation pick up from DFW Airport and back if you want to fly in and see/send someone to inspect the item in person. In addition, we can do FaceTime / Teams/Zoom calls to go over the item in person for any domestic /international procurement. Please be mindful that we are in Dallas and therefore are on the US Central Time (CT) for any communication arrangements.

Shipping Arrangements: The unit is in our yard, South of Dallas, Texas. We can assist with shipping arrangements, and when properly scheduled, we will provide loading service at no additional charge.

Payment: Payment in full FOB for our yard in South Dallas is required for equipment procurement. We prefer to see /meet the purchaser to ensure we can provide adequate after-sales support to set your project up for success. We will require a verifiable Cashier's check as a payment if you are planning to come in person. We will require a wire transfer in full, with the transaction cleared in the company account, before releasing the equipment to any 3rd party shipper companies. We are here to help and make this transaction as simple as possible, but we will take all necessary measures to protect ourselves and you.

Feel free to call/contact Gas Equipment 4 Sale with any questions; we will be happy to jump on the call and see if / how procuring those units can help you meet your project needs.