Pump, Hydrostatic Test, Diaphragm Hi Gpm

The Hydrostatic Test Pumps 938-93 Series are designed for high-volume, high-performance pressure testing of water lines, plumbing systems, and fire mains. These diaphragm-style pumps produce powerful output at flow rates of up to 35 GPM and pressures of up to 550 PSI, making them perfect for demanding field circumstances. They are self-priming, suitable with up to 10% chlorine solutions, and designed to deal with harsh jobsite conditions.

Why Use a Diaphragm-Style Hydrostatic Pump

Diaphragm-style High Gallons per Minute Hydrostatic Pumps are designed for reliability and performance in harsh testing situations. Unlike piston or plunger pumps, diaphragm pumps generate pressure using a flexible membrane, which removes direct contact between moving parts and the test fluid. This makes them excellent for handling corrosive or abrasive liquids, such as water with up to 10% chlorine.

They offer major benefits:

• Run-Dry Safe - Will not be damaged if the water supply is disconnected.
• Chemical Resistant - Can withstand up to 10% chlorine solutions.
• Low Maintenance - There are no seals or plungers in the fluid route.
• Smooth Flow: Built-in dampeners reduce pressure surges.

Key Benefits of Hi GPM Hydrostatic Pumps

The Hydrostatic Test Pumps 938-93 Series provide high flow rates while maintaining consistent performance in the field. Whether you're testing water mains, plumbing systems, or fire lines, these high GPM hydrostatic pumps produce reliable results even in extreme situations.

• Faster job completion: The high GPM output (up to 35 GPM) speeds up hydrostatic testing tasks.
• Durable and dependable: Made from industrial-grade materials for long-term use in demanding environments.
• Self-priming capability: Ensures quick startup, even with chlorinated water.
• Portable and compact: Optional wheel kits and a heavy-duty frame enable easy mobility and field use.

Applications of Hi GPM Diaphragm Hydrostatic Test Pumps

The diaphragm hydrostatic test pumps 938-93 Series are suitable for a variety of water pressure testing applications in both municipal and industrial environments. Their high-volume output and chlorine-compatible design make them beneficial tools for maintaining system integrity and code compliance.

Common applications include:

• Municipal and Industrial Pipeline Testing - Used for testing large-scale water distribution lines, industrial piping systems, and other municipal infrastructure.
• New Construction and System Repairs - Essential for ensuring the integrity of newly installed or repaired water pipes. These pumps help to ensure that systems are leak-free and ready for use.
• Fire Suppression System Certification - Required for testing fire mains, sprinkler systems, and other fire prevention infrastructure to ensure compliance with building codes and safety standards.
• Facility Maintenance and Inspection - Ideal for routine testing by facility managers, maintenance teams, and service technicians who assess water systems on a regular basis for wear, corrosion, or pressure issues.
• Plumbing & Mechanical Contracting - Used by plumbing contractors on both residential and commercial projects to ensure pipelines, valves, and couplings can handle operational pressures.

How to Choose the Right GPM for Your Test

The proper GPM (gallons per minute) rating is determined by the type and scale of your testing application. When making your decision, take into account both the pressure needs and the pipe size.

• 9.5 GPM @ 550 PSI - Ideal for small to medium-sized pipes that need tighter pressure management or higher testing pressures. Ideal for applications requiring pressure integrity, such as high-rise buildings, fire protection lines, and complex plumbing systems.
• 35 GPM @ 290 PSI - Best suited for large-diameter pipes or applications that require quick filling and flushing. Recommended for use in municipal water mains, irrigation systems, and other high-volume systems.

Use higher GPM pumps to reduce fill times, especially for high-volume systems.  Select higher PSI models for more demanding hydrostatic pressure testing to meet regulatory or safety standards.

Ready to Streamline Your Pressure Testing

Explore the Diaphragm Hydrostatic Test Pumps 938-93 Series to find the best model for your particular requirements. Whether you're working on municipal pipelines, fire protection systems, or high-volume water lines, these high-performance pumps provide the required flow and pressure. 

Need help choosing the right pump? Contact Petersen Products at 262-692-3100 or email us at sales@petersenproducts.com – we're here to help with product recommendations and technical support.