PDC Diaphragm Compressor – Model PDC-4-1250-7500(150)

Specifications:

Manufacturer: PDC Machines

Model: PDC-4-1250-7500(150)

Compressor Type: Diaphragm

Stages: 4

Media: Hydrogen Gas

Suction Pressure: 145 PSIG

Discharge Pressure: 7,500 PSIG

Flow Rate: 25 SCFM (approx. 1,250 SCFH)

Compressor Speed: 400 RPM

Power Supply: 230/460 VAC, 3PH, 60Hz

Air Supply Requirement: 80–120 PSIG (Clean, Dry)

Coolant Supply: Closed Loop

Area Classification: Class I, Division 2, Group B

System Weight: Approx. 6,500 lbs

Mounting: Skid-mounted with Seismic-rated CLC integration

Condition: Excellent – Routinely maintained

Warranty: 12-Month Transferable

Documentation: Full manuals included

System Tie Points:

A - Compressor Inlet: 1.00” Swagelok

B - Compressor Outlet: 0.38” Swagelok

C - Instrument Air: 0.50” Swagelok

D - LP Vent: 1.00” Swagelok

E - HP Vent: 1.00” Swagelok

F - N2 Purge Inlet: 0.50” Swagelok

Key Features & Included Systems:

Compressor System Scope of Supply:

• Fully piped and wired skid with control instrumentation
• Crankcase and head assemblies
• Main flywheel and bushing
• Hydraulic system including:
• Oil & injection pumps per head
• Pressure regulating valve
• Pressure switch and gauge
• Oil cooler
• Interstage accumulator and inlet filters
• Auto unloading system to prevent oxygen ingress
• Hoist and monorail for service

Contamination-Free Operation:

Diaphragm leak detection system per head

Pressure switches, gauges, and safety valves

Isolation and check valves

Electric Drive System:

TEFC electric motor (≤15 HP)

Non-sparking OSHA-compliant belt drive

Static conductive oil-resistant V-belt system

Controls:

Allen-Bradley PLC with HMI (Hazardous Area Rated)

MODBUS / Ethernet communication

Autonomous shutdown via flow/pressure/temp switches

PLC displays: Power, Stop, Run, Standby, Alarm

Instrument power conversion via transformers

Manual control buttons: Stop, Start, Jog, E-Stop

Instrumentation / Safety:

• Gauges for suction, discharge, interstage
• Pressure transducers and transmitters per stage
• Safety relief valves at critical points
• Hazardous area RTDs:
• Crankcase
• Aftercooler outlet
• Head inlet/outlet (when ≥320°F / 160°C)

Cooling System (Integral):

• Interstage and aftercooler with drain
• Isolation valves (in/out)
• Flow switches and indicators
• Balancing and consumer valves
• Piping connections to external heat rejection system

Pre-Purchase Inspections:

We welcome pre-purchase inspections during normal business hours, by appointment only. If you’re planning to fly in to view or inspect the equipment in person, we are happy to arrange for that with a proper notice.

Shipping Arrangements:

We’re happy to assist with shipping logistics and can provide loading services for equipment located at our yard, for units weighing up to 15,000 lbs, when scheduled in advance.

Payment Terms:

Full payment is required before the release of any equipment. We always prefer to meet our buyers in person to discuss project needs and ensure you receive the right equipment and support for your success.

A verifiable cashier’s check is required if you're paying in person. If you plan to use a third-party shipping company, a wire transfer must be completed and cleared in full before we release the equipment. While we aim to make the transaction as smooth as possible, we take appropriate measures to protect both parties.

Contact Us:

If you have any questions, please don’t hesitate to reach out. We're happy to answer online inquiries or jump on a call to explore how any of our available equipment at GasEquipment4Sale can help support your project needs.