Diaphragm Metering Pump Crispaire 30 GPD 100 PSI Dosing Pump

Description

Product Overview

The Crispaire Diaphragm Metering Pump is engineered for high‑precision chemical dosing in laboratory environments and small‑scale treatment systems. Constructed with a robust stainless‑steel diaphragm and a sealed gear train, the pump can reliably handle back‑pressures up to 100 PSI (7 BAR) while maintaining a steady flow rate of up to 30 GPD (1.25 L h). The pump body is fabricated from corrosion‑resistant polymer composites, and the internal fluid path incorporates ceramic ball valves that provide smooth, leak‑free operation. A precision‑machined output dial allows users to fine‑tune the dosage in increments as small as 0.1 GPD, ensuring exact metering for sensitive analytical procedures. The package includes 3/8″ PVC suction and discharge tubing, pre‑installed ceramic ball valves, and a set of interchangeable diaphragms, making the system ready for immediate deployment without the need for additional components.

Usage

This dosing pump excels in a variety of laboratory and field applications. It is ideal for water quality analysis, where precise reagent addition is critical for accurate measurements of pH, conductivity, and contaminant levels. The pump also integrates seamlessly with reverse‑osmosis (RO) systems, allowing controlled injection of antiscalants, cleaning agents, or pH adjusters directly into pressurized feed lines. In small‑scale chemical treatment setups, such as pilot‑plant reactors or batch processing units, the pump provides consistent dosing of catalysts, inhibitors, or nutrients, reducing variability and improving product consistency. Because the pump is designed for indoor use only, it should be operated in well‑ventilated laboratory spaces, away from open flames or combustible gases, as the motor and gear assembly are not rated for explosive atmospheres.

Why Choose Us

Choosing the Crispaire Diaphragm Metering Pump means selecting a solution backed by rigorous quality assurance and a commitment to durability. Each pump undergoes a multi‑stage testing protocol that verifies flow accuracy, pressure tolerance, and long‑term wear resistance. The modular design enables rapid replacement of the diaphragm, valves, and seals, minimizing downtime and extending the service life of the unit. Our after‑sales support includes a comprehensive user manual, video tutorials, and direct access to technical specialists who can assist with installation, calibration, and troubleshooting. Additionally, the pump is covered by a two‑year limited warranty that protects against manufacturing defects, reflecting our confidence in the product’s reliability.

Key Features

• Precise adjustable flow dial delivers dosing accuracy down to 0.1 GPD.
• Robust diaphragm and ceramic ball valves handle up to 100 PSI back‑pressure.
• Complete kit includes PVC tubing, suction and discharge fittings, and spare diaphragms.
• Modular design allows quick part replacement, reducing maintenance time.
• Dedicated technical support and two‑year warranty ensure reliable long‑term operation.

FAQ

What fluids can the pump handle?

The pump is suitable for a wide range of aqueous solutions, including acids, bases, salts, and mild organic solvents. It is not recommended for highly corrosive or abrasive fluids that could damage the diaphragm or valve seats.

How do I adjust the flow rate?

Turn the precision output dial located on the pump housing. Clockwise rotation increases flow, while counter‑clockwise rotation decreases it. For fine adjustments, use the marked scale on the dial to set the desired GPD value.

Can the pump be used in a closed‑loop system?

Yes, the pump’s sealed gear train and high‑pressure rating make it ideal for injection into closed‑loop circuits such as RO membranes, where maintaining system integrity is essential.

What maintenance is required?

Periodically inspect the diaphragm for wear and replace it if cracks appear. Clean the ceramic ball valves with a mild detergent solution to prevent buildup. Lubricate the motor shaft according to the manufacturer’s schedule, typically every six months under normal operating conditions.

Is the pump compatible with standard laboratory tubing?

The included 3/8″ PVC tubing matches common laboratory fittings, and the pump’s inlet and outlet ports accept standard 1/4″ and 3/8″ connections, allowing easy integration with existing setups.