Comprehensive Product Overview: GRACO Husky 307 AC Diaphragm Pump (Part Number: D31211)

Product Introduction

The GRACO Husky 307 AC Air-Operated Double Diaphragm (AODD) Pump, specifically identified by part number D31211, represents a pinnacle of engineering excellence in fluid transfer technology. Designed for exceptional performance in demanding industrial environments, this 3/8-inch pump combines robust construction with operational efficiency to deliver reliable service across numerous applications. As part of Graco's renowned Husky series, this pump embodies the company's commitment to quality, durability, and innovation in fluid handling solutions. The strategic material configuration featuring Polypropylene (PP) Center Section, AC Seats, PTFE Balls, and PTFE Diaphragm makes it particularly suited for handling corrosive chemicals, solvents, and various challenging fluids encountered in industrial processes.

Graco, a globally recognized leader in fluid handling equipment since 1926, has engineered the Husky 307 AC to set new benchmarks in diaphragm pump technology. This model specifically addresses the needs of industries requiring consistent performance, minimal maintenance, and long-term reliability in their fluid transfer operations. With its compact design and powerful capabilities, the D31211 serves as a versatile solution for chemical processing, industrial manufacturing, wastewater treatment, and numerous other sectors where dependable fluid transfer is critical to operational success.

Technical Specifications

The Husky 307 AC (D31211) boasts an impressive array of technical specifications that make it suitable for diverse industrial applications. Below is a comprehensive table detailing its key performance parameters:

Table 1: Detailed Technical Specifications for GRACO Husky 307 AC (D31211)

ensures it can overcome significant system pressures in demanding applications.

Design Features & Material Construction

Advanced Material Configuration

The strategic selection of materials in the D31211 model is paramount to its performance and longevity, particularly when handling aggressive media. Each component is engineered for specific functional advantages:

Table 2: Material Configuration and Functional Benefits

Innovative Engineering Features

The Husky 307 AC incorporates several revolutionary design features that set it apart from conventional diaphragm pumps:

• Module Air Valve System: This innovative valve design eliminates stall points and minimizes pulsation, resulting in smoother operation and faster cycling

• . The externally serviceable spring-pilot valve enables quicker response times and reduced maintenance requirements.

• Compact and Lightweight Design: The pump's streamlined construction makes it easily portable and simple to install in various configurations, even in space-constrained environments

• .

• Low Noise Operation: Generating only 75 dBA at 50 psi and 60 cpm

• , the Husky 307 AC provides a quieter working environment compared to many competing pumps.

• Stainless Steel Fasteners: All bolts are made from stainless steel to resist corrosion, ensuring proper alignment and facilitating easier reassembly during maintenance

• .

Performance Advantages

Enhanced Efficiency and Reliability

The GRACO Husky 307 AC pump demonstrates remarkable performance improvements over competing diaphragm pumps:

• 30% Higher Efficiency: Compared to other leading products in its category, the Husky 307 AC delivers significantly better overall efficiency

• .

• Extended Diaphragm Life: The innovative design and PTFE material selection result in diaphragm lifespan that is up to 5 times longer than comparable double diaphragm pumps, dramatically reducing maintenance requirements and associated downtime

• .

• Low Pressure Operation: The pump can function effectively at air pressures as low as 20 psi (1.4 bar)

• , making it suitable for applications with limited air supply.

Operational Versatility

The Husky 307 AC is engineered for consistent performance in challenging environments:

• Dry-Run Capability: The pump can run dry indefinitely without damage, providing exceptional operational flexibility and protection against accidental dry running.

• Self-Priming Design: With a suction lift capability of 3.7 meters

• , the pump offers excellent priming performance in various installation configurations.

• Explosion-Proof Operation: As an air-powered device, the pump naturally provides explosion-proof operation, making it suitable for hazardous environments where electrical equipment poses risks.

• Solids Handling: The capability to pass solids up to 1.6 mm in diameter

• allows it to manage slightly contaminated or semi-suspended fluids without clogging, adding to its application versatility.

Application Areas

The versatility and chemical resistance of the Husky 307 AC (D31211) make it a valuable asset across numerous industries. Its design is suited for transferring a wide spectrum of fluids safely and efficiently.

Table 3: Common Industrial Applications of the Husky 307 AC Pump

The pump's excellent chemical resistance provided by its PP and PTFE components makes it particularly suitable for handling aggressive fluids including acids, alkalis, solvents, and various chemical solutions

. Additionally, its capability to handle solids-containing fluids extends its usefulness to applications such as ceramic glazes, pigments, and abrasive slurries.

Operational & Maintenance Guidelines

Installation Requirements

Proper installation is crucial for optimal performance and long service life:

• Air Supply: The pump requires a clean, dry air supply within the pressure range of 20-100 psi (1.4-7 bar)

• .

• Piping Considerations: Properly sized piping should be installed with minimal bends to reduce flow resistance. Support piping independently to avoid stressing the pump connections.

• Foundation: Ensure the pump is mounted on a stable, level surface that provides adequate support and minimizes vibration transmission.

Maintenance Procedures

The Husky 307 AC is designed for minimal maintenance requirements, but periodic attention ensures extended service life:

• Regular Inspection: Visually inspect the pump for signs of wear, leakage, or damage during routine operation.

• Diaphragm Replacement: While the PTFE diaphragm offers extended service life

• , periodic replacement may be necessary depending on operating conditions. Graco's design facilitates relatively straightforward diaphragm replacement.

• Valve Maintenance: The accessible air valve assembly allows for straightforward servicing when required, minimizing downtime

• . The ball valves and seats should be inspected during diaphragm replacement.

Comparative Analysis

The Husky 307 AC (D31211) demonstrates significant advantages over competing products in its class:

• Superior Material Compatibility: The availability of multiple material options, including PP, ACETAL, and PTFE

• , provides exceptional flexibility for various application requirements.

• Enhanced Efficiency: The pump's 30% efficiency advantage over market leaders

• translates to lower operating costs and improved performance.

• Reduced Total Cost of Ownership: With extended diaphragm life and minimal maintenance requirements, the Husky 307 AC offers substantially lower long-term operating costs compared to alternative solutions.

Conclusion

The GRACO Husky 307 AC Diaphragm Pump (Part Number: D31211) stands out as a highly reliable and efficient solution for transferring corrosive and challenging fluids. Its thoughtful engineering, featuring a Polypropylene center section, ACETAL wetted parts, and PTFE diaphragms and balls, provides exceptional chemical resistance and durability. With a proven performance profile that includes a flow rate of up to 26.5 L/min

, and the ability to handle small solids, this pump is built to excel in the most demanding industrial environments.

With its robust design, extended service intervals, and operational versatility, this pump delivers exceptional value through reduced maintenance requirements and consistent performance. The specific configuration of the D31211 model with its PP construction and PTFE components provides an ideal balance of chemical resistance, durability, and cost-effectiveness for handling corrosive fluids.

For industries seeking to enhance their fluid handling operations with a pump that offers low maintenance, explosion-proof safety, and long-term cost-effectiveness, the GRACO Husky 307 AC (D31211) represents a superior choice, backed by Graco's global reputation for quality and innovation in fluid handling technology.