91B70
91B70
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91B70
91B70

Gardner Denver Valve Replacement - 91B70

Gardner Denver ReplacementSKU: 91B70
Price:
$764.00
Stock:
In Stock

Description

Gardner Denver Solenoid Valve Replacement - 91B70

Maintain proper compressor control and dependable system performance with the Gardner Denver Solenoid Valve Replacement - 91B70. This solenoid valve is designed for Gardner Denver rotary screw air compressors and is commonly used as a blowdown valve within the control system. It opens and closes in response to electrical signals to release pressure during unloading, helping ensure smooth compressor cycling, proper system response, and reliable operation.

  • Controls Blowdown and Pressure Release – Opens to vent pressure during unloading cycles, helping protect the compressor and ensure proper system transitions.
  • Electrically Actuated Valve Operation – Responds to control signals to manage airflow within the compressor control circuit.
  • Supports Compressor Efficiency and Reliability – Proper blowdown function helps reduce load on startup, improve efficiency, and prevent system stress.
  • OEM Compatible Fitment – Identified as Gardner Denver part number 91B70 and used in rotary screw compressor control systems.

Restore proper compressor control and maintain reliable performance with the Gardner Denver Solenoid Valve Replacement - 91B70, a critical component engineered to regulate pressure release, support efficient operation, and protect long term compressor reliability.

Why Choose Us?

  • OEM-Equivalent Quality: Our parts meet or exceed OEM standards - at a fraction of the price. You're not paying extra for a logo.
  • Not Just Another Marketplace: We're not just a place to buy parts or oil. We're compressor experts who can provide personalized guidance and reliable support.
  • All Brands, No Restrictions: Unlike many distributors who are tied to OEM agreements, we sell and service parts for all major compressor brands. Can't find what you need? We'll help you get it.
  • USA-Based Support: Talk to real people in Greenville, SC, who know compressors and are ready to help.

Still curious? Learn more about our Inlet to Outlet™ Promise and see why so many customers trust us as their go-to compressor partner.

Other Gardner Denver Replacement Parts:

In addition to the Gardner Denver Solenoid Valve Replacement - 91B70, we stock replacement parts for Gardner Denver Air Filters, Gardner Denver Oil Filters, Gardner Denver Separators, Gardner Denver Oil and more so you can maximize the performance of your Gardner Denver Compressors.

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Frequently Asked Questions

Is the 91B70 solenoid valve compatible with my Gardner Denver compressor?

The 91B70 solenoid valve is designed for Gardner Denver compressors that require this exact part number. It is commonly used as a blowdown solenoid valve in various rotary screw compressor systems. Compatibility should always be confirmed by matching 91B70 in your compressor’s parts manual or by verifying your model and serial number. Not sure? Reach out with your compressor model and serial number and we’ll help confirm compatibility.

What does the 91B70 solenoid valve do?

The 91B70 is a blowdown solenoid valve, meaning it controls the release of compressed air from the system during shutdown or unloading cycles. This helps:

  • Relieve pressure from the separator tank
  • Allow the compressor to restart under low load
  • Improve overall system efficiency and reliability

Why is it important to replace a faulty solenoid valve?

A failing solenoid valve can cause:

  • Failure to unload properly
  • Hard starts or excessive load on startup
  • Air leaks or pressure retention in the system

Replacing the valve ensures proper pressure control, system protection, and efficient compressor cycling. 

Is this an OEM part?

This is an OEM-equivalent replacement solenoid valve designed to meet the same performance standards as the original Gardner Denver valve.

Why is it important to replace a damaged elbow fitting?

A damaged or leaking elbow can cause air leaks, pressure loss, and improper control system operation. Because these fittings are part of the control circuit, even a small leak can impact loading/unloading performance and system efficiency.

What are the signs that the 91B70 solenoid valve needs to be replaced?

Common signs include:

  • Compressor not unloading after shutdown
  • Air constantly venting or not venting at all
  • Electrical failure (no actuation)
  • Erratic system pressure behavior

If the compressor struggles during startup or fails to release pressure, the solenoid valve should be inspected.

How difficult is it to install?

Installation is typically a moderate maintenance task involving electrical and air line connections. Because this component is part of the pressurized system, the compressor should always be shut down, isolated, and depressurized before service.

Do you carry other parts for Gardner Denver compressors?

Absolutely. We stock air filters, oil filters, belts, valves, intercoolers, aftercoolers, lubricants, rebuild parts, and more for Gardner Denver compressors. If you don’t see what you need, just ask and we’ll help you find it. 

How do I know which oil to use in my Gardner Denver compressor?

Stationary rotary screw compressors may have specific oil requirements that differ from reciprocating or portable units. To make sure you’re using the right lubricant for your machine, check out our full guide here: Choosing the Right Oil for your Gardner Denver Compressor. It covers the recommended options for rotary screw compressors and helps you match your compressor with the proper oil.

Where do your products ship from?

All parts ship from our Greenville, South Carolina warehouse. Our USA-based team ensures fast shipping and dependable customer support whenever you need assistance.