McDonnell & Miller 310451 Stainless Steel Paddle Kit for FS4-15SS
McDonnell & Miller 310451 (Bell & Gossett) Stainless steel Paddle Kit.
Use with FS4-15SS Flow Switch.
Includes a 1″, 2″, 3″ & 8″ Paddle.
$42.90
McDonnell & Miller 310451 Stainless Steel Paddle Kit for FS4-15SS
McDonnell & Miller 310451 (Bell & Gossett) Stainless steel Paddle Kit.
Use with FS4-15SS Flow Switch.
Includes a 1″, 2″, 3″ & 8″ Paddle.
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McDonnell & Miller 310451 Stainless Steel Paddle Kit for FS4-15SS
McDonnell & Miller 310451 (Bell & Gossett) Stainless steel Paddle Kit.
Use with FS4-15SS Flow Switch.
Includes a 1″, 2″, 3″ & 8″ Paddle.
| Weight | .5 lbs |
|---|---|
| Dimensions | 5 × 5 × 1 in |
| Application: | Replacement Part |
| Used With: | FS4-3 Series
FS8-W Series FS250 Series |
| Material: | Stainless Steel |
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Mcdonnell-Miller_series-fs4-3-liquid-flow-switch_instructions

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Frequently asked questions
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.
We are located in Surrey, British Columbia, and serve customers locally in the Lower Mainland as well as nationwide.
Yes. We ship pumps, parts, and equipment anywhere in Canada. Shipping options and timelines vary depending on product availability and destination.
We supply a wide range of pumps, including:
Hydronic pumps
Circulation pumps
Inline pumps
End suction pumps
Booster pumps
HVAC and mechanical system pumps
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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.
Yes. Inline Sales & Services Ltd. has extensive experience with Bell & Gossett pumps and replacement parts, including repairs and upgrades.
Absolutely. Our knowledgeable team can help you identify the correct pump or part based on your system requirements, model numbers, or application details.
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.
You can place an order by contacting us directly by phone or email. Our team will confirm availability, pricing, and shipping details.
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.

A leader in engineering and manufacturing boiler and liquid level controls, low-water cutoffs, and flow switches for steam and hot water boilers in industrial, commercial and building applications.