Price Pump CD150SS-3.50 — 316 Stainless Steel Close-Coupled Centrifugal Pump Head for Demanding Industrial Applications
The Price Pump CD150SS-3.50 is a 316 stainless steel close-coupled centrifugal pump head designed for the kind of tough, continuous-duty environments where material compatibility and seal integrity actually matter. Built around a 1-1/2" discharge by 2" suction by 5" volute configuration with a 3.50" impeller trim, this head mounts directly to a standard NEMA 56C motor frame — no baseplate required, no custom coupling hardware. The all-316 stainless steel wetted construction, including the volute, bracket, impeller, and shaft, makes it well-suited for corrosive fluids, hot solvents, caustics, deionized water systems, and chemical process lines where iron or bronze would simply not hold up over time.
Price Pump's CD series is backed by a JohnCrane 5/8" Type 21 Fluorocarbon mechanical seal as standard, with options for Type 9 PTFE or a Type 21 double seal for more aggressive applications. The CD150SS-3.50's 3.50" impeller trim is a factory-trimmed configuration that reduces flow and head relative to the full 4.94" impeller, allowing it to be matched precisely to lower-demand system curves without motor oversizing or excessive energy consumption. Maximum internal temperature for the SS configuration reaches 300°F (149°C), and maximum internal pressure is rated at 150 PSI (10 BAR) — giving operators meaningful headroom in process environments. This is a pump head only; it is intended to be paired with a separately sourced NEMA 56C motor to suit the specific horsepower, phase, and speed requirements of the installation.
Key Features:
- All 316 stainless steel wetted components: volute, bracket, impeller, shaft, and fasteners
- Close-coupled design mounts directly to a standard NEMA 56C footless motor — no power frame required
- Factory-trimmed 3.50" impeller for reduced flow and head to match lower system curve requirements precisely
- Standard JohnCrane 5/8" Type 21 Fluorocarbon (Viton) mechanical seal; optional Type 9 PTFE or Type 21 double seal available
- PTFE volute O-ring standard on CD150SS configuration
- Horizontal installation standard; vertical mount variant (CD-V) available for special applications
- Not self-priming — flooded suction installation required
Applications:
- Chemical process systems: deionized water, wastewater treatment, hot solvents, and caustics
- OEM equipment: industrial washers, filters, chillers, cooling towers, scrubbers, and plating equipment
- Agricultural chemical transfer including acid fertilizers and other agricultural chemicals
- Industrial process fluid circulation requiring corrosion-resistant wetted materials
- Cooling and temperature control systems in process and manufacturing environments
- General industrial pumping of corrosive or high-temperature fluids
Specifications:
- Brand: Price Pump
- Part Number: CD150SS-3.50
- Suction Port Size: 2"
- Discharge Port Size: 1-1/2"
- Volute Size: 5"
- Impeller Diameter (Trim): 3.50"
- Impeller Material: 316 Stainless Steel
- Volute Material: 316 Stainless Steel
- Bracket Material: 316 Stainless Steel
- Shaft Material: 316 Stainless Steel
- Fasteners: 316 Stainless Steel
- Volute Seal: PTFE O-Ring
- Mechanical Seal: JohnCrane 5/8" Type 21 Fluorocarbon (Viton/Carbon/Ceramic) — standard
- Motor Frame Compatibility: NEMA 56C (footless)
- Max. Flow: Up to 160 GPM (CD150 series at full impeller); 3.50" trim reduces output accordingly
- Minimum Recommended Flow: 25 GPM
- Max. Internal Temperature: 300°F (149°C)
- Max. Internal Pressure: 150 PSI (10 BAR)
- Installation Orientation: Horizontal standard; vertical mount available (CD-V)
- Pump Type: Close-coupled centrifugal, non-self-priming (flooded suction required)
Frequently Asked Questions
Q: Is the CD150SS-3.50 a complete pump unit or just the pump head?
This is a pump head (wet end) only. It must be paired with a separately purchased NEMA 56C frame motor. The motor is not included. You will need to select a motor that matches your required horsepower, phase, voltage, and speed to complete the pump assembly.
Q: Why would I choose the 3.50" impeller trim instead of the full 4.94" impeller?
Impeller trimming is a standard engineering method used to match a pump's output to a specific system curve without throttling or wasting energy. The 3.50" trim delivers lower flow and head than the full-diameter impeller, making it the right choice when maximum output is not required. Operating closer to the best efficiency point for your actual system reduces wear, energy draw, and heat buildup over time.
Q: What types of fluids is the CD150SS-3.50 rated for?
The all-316 stainless steel wetted construction makes this pump head well-suited for corrosive and aggressive fluids including acids, caustics, solvents, deionized water, and a broad range of chemical process streams. The standard Viton fluorocarbon mechanical seal adds compatibility with many organic chemicals. Optional seal face materials and elastomers are available for more specialized fluid compatibility requirements.
Q: Can this pump head be mounted vertically?
Standard CD series heads are designed for horizontal installation. A vertical mount version, designated CD-V, is available from Price Pump for applications that require vertical orientation. Confirm with your supplier that the correct variant is being ordered if vertical mounting is required.
Q: Does the CD150SS-3.50 require any special priming before startup?
Yes. This pump is not self-priming and requires a flooded suction installation, meaning the liquid source must be at or above the pump inlet to keep the casing filled before and during operation. Running the pump dry will damage the mechanical seal and impeller and will void any warranty coverage.
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