Description

Key Benefits

Variable speed inverter technology automatically adjusts to real-time demand
Up to 38% lower energy consumption compared to fixed-speed models
Delivers smooth continuous airflow up to 640 CFM
Stable system pressure with reduced unloaded operation
Quiet operation at approximately 74-76 dBA with low vibration
Advanced microprocessor controller with integrated diagnostics and monitoring

Specifications

Model: SRP 4150E Flex
Part Number: 970.3972-0
Compressor Type: Rotary Screw (Oil-Lubricated, Variable Speed)
CFM (use this exact value): 640 CFM
Max PSI: 125 PSI
HP: 150 HP (110 kW)
Motor Type: TEFC IP55
Voltage: 460V / 3 Phase
Drive Type: Frequency Inverter (Variable Speed Drive)
Discharge Size: 2″ Outlet
Cooling: Air-Cooled
Connections: See datasheet
Configuration Options: Base-mounted, Tank-mounted, Total Solution package available

Applications

Large manufacturing plants and full production assembly lines
Automotive and heavy equipment facilities
Metal fabrication, welding, and CNC machining operations
Laser cutting and high-demand pneumatic automation systems
Industrial environments requiring 24/7 continuous-duty operation

Warranty

2-Year Warranty on Airend (Pump)
1-Year Warranty on Complete Unit (motor, electrical components, controls, and all other parts)

Downloads

Technical Manual: CT-536-SRP-4150E-e-4150E-Flex-2015-08-Trilingue.pdf
Controller Manual: CONTROL-123-E-NET.pdf

Frequently Asked Questions

What oil does this compressor use?

Schulz piston compressors use Schulz SG-TM 30 semi-synthetic compressor oil (our SS-30 product). This is the factory-recommended oil for all Schulz L-Series and V-Series piston compressors. Use of other oils may void warranty.

Is shipping included in the price?

Yes — free shipping is included to commercial locations with a loading dock or forklift. Liftgate service, inside delivery, and residential delivery are available for additional fees (shown at checkout). Standard delivery requires a commercial address.

How long does delivery take?

Most compressors ship within 1–2 business days from our warehouse. Delivery typically takes 3–7 business days depending on your location. You'll receive a tracking number when your order ships.

What is covered under warranty?

Schulz compressors include a 2-year warranty on the compressor pump and a 1-year warranty on all other components. Extended warranties (2, 3, or 5 years) are available at checkout. We are an authorized dealer, so all warranty claims are supported directly.

Do I need a special electrical setup?

Single-phase models run on standard 230V single-phase power (common in most shops). Three-phase models require 230V or 460V three-phase service. Always verify your electrical capacity before ordering — our team can help you confirm requirements by phone.

Can I return or exchange the compressor?

Please contact us before purchasing if you have sizing questions — our team can help you choose correctly. For return inquiries, contact us at info@schulzproducts.com or (770)-734-6383 within 30 days of delivery.

Weight	2900 lbs
Dimensions	78 × 39 × 77 in
Delivery Options	COMMERCIAL LOCATION WITH LOADING DOCK OR FORKLIFT, Inside Delivery Add $60, Lift-Gate Truck Add $60, Residential Address Add $60, Residential Address + Lift-Gate Truck Add $110

Schulz SRP 4150E Flex Rotary Screw Air Compressor – 150 HP, Variable Speed, 670 CFM, 125 PSI, 460V 3 PH Industrial