Flojet model # R4525-743 – Quad Diaphragm Pump

Features Quad Pump Self priming diaphragm pump with electric motor. Model No. 4300 Series • Self primes up to 2.4m vertical lift • Handles Water Like and Viscous Liquids up to 250 cP • Four piston design delivers higher flow rates • Chemical resistant polypropylene pump head for long life • Choice of elastomeric materials to work with many chemicals • Quick connect plugin ports for easy installation • Optional pressure switch control to run the pump only as needed

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Status1 in stock

CategoriesClearance

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Flojet model # R4525-743 – Quad Diaphragm Pump

Additional information

Weight	5 lbs
Dimensions	11 × 4 × 5 in

Features & Specs

Performance specifications

Pump type: Four-chamber positive-displacement diaphragm pump.

Motor: Permanent magnet, double ball-bearing armature.

Electronic control: Variable-speed drive (VSD) electronic speed control built into the motor endbell.

Power: 12-24 Volt DC model with a 15-amp fuse.

Maximum flow: 4.5 gallons per minute (17 liters per minute).

Running pressure: 30 psi (2.1 bar).

Shut-off pressure: 40 psi (2.8 bar).

Self-priming: Up to 10 feet of suction lift.

Connections

Inlet: 1/2-inch hose barb.

Outlet: Quad Port or 1/2-inch hose barb, depending on configuration.

Additional features:

Able to run dry without damage.

Removable port adapters.

Built-in thermal overload protection.

ISO 8846 MARINE ignition protection.

Key features

Variable speed control: Electronically controlled motor adjusts speed for consistent water pressure and flow.

Quiet operation: The variable speed function eliminates the rapid cycling and noise associated with standard pressure switch pumps.

Runs dry without damage: The pump is designed to operate without fluid without sustaining damage.

Removable port adapters: Allows for flexible connection options.

Thermal overload protection: Automatically shuts down the motor if it overheats.

Marine ignition protected: Certified to ISO 8846 standards for use in marine environments.

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F.A.Qs

Frequently asked questions

What does Inline Sales & Services Ltd. specialize in?

Inline Sales & Services Ltd. specializes in hydronic pumps, pump systems, parts, and related solutions for commercial, industrial, and HVAC applications. We provide sales, service, and technical support to customers throughout British Columbia and across Canada.

Where are you located?

We are located in Surrey, British Columbia, and serve customers locally in the Lower Mainland as well as nationwide.

Do you ship across Canada?

Yes. We ship pumps, parts, and equipment anywhere in Canada. Shipping options and timelines vary depending on product availability and destination.

What types of pumps do you supply?

We supply a wide range of pumps, including:

Hydronic pumps
Circulation pumps
Inline pumps
End suction pumps
Booster pumps
HVAC and mechanical system pumps

Do you sell pump parts?

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Do you sell pump parts?

Yes. We carry and source a wide selection of pump parts, including seals, bearings, impellers, motors, and gaskets. If we don’t have a part in stock, we can usually source it quickly.

Do you work with Bell & Gossett pumps and parts?

Yes. Inline Sales & Services Ltd. has extensive experience with Bell & Gossett pumps and replacement parts, including repairs and upgrades.

Can you help identify the correct pump or replacement part?

Absolutely. Our knowledgeable team can help you identify the correct pump or part based on your system requirements, model numbers, or application details.

Do you offer pump repair services?

Yes. We provide professional pump repair and service solutions for many makes and models. Our goal is to restore performance, extend equipment life, and minimize downtime.

How do I place an order?

You can place an order by contacting us directly by phone or email. Our team will confirm availability, pricing, and shipping details.

How can I contact Inline Sales & Services Ltd.?

You can reach us by phone or email, or by using the contact form on our website. We’re happy to answer questions, provide quotes, or assist with technical inquiries.

PLEASE NOTE THAT PAYMENTS TERMS ARE DUE UPON RECEIPT UNLESS OTHERWISE STATED. THERE IS A 25% RESTOCKING CHARGE ON RETURNED ITEMS UNUSED WITHIN 30 DAYS. NO RETURNS ON SPECIAL/CUSTOM ORDERS INCLUDING NEW PUMP BUILDS, HEAT EXCHANGERS, CUSTOM PUMP ORDERS, MANUFACTURED ITEMS. **NOTE: CLEARANCE ITEMS ARE SOLD AS IS, NEW IN BOX. NO WARRANTY AND NO RETURNS ON ALL CLEARANCE ITEMS.