Hayward CAT 3500 Chemical Automation System CATPP3500

Item #: CATPP3500

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Special Order Item - Usually Ships Within 1 to 3 Weeks

Expedited Shipping NOT Avaliable Not Avaliable Outside Contiguous US
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Available for:
Same Day Pickup

Available for:
Same Day Delivery

Same Day Delivery

Place your order before 2:00 PM and we'll drop it off on your doorstep today! Orders placed after 2:00 PM will be delivered the next day. Every delivery includes a free digital water analysis.

Same Day Pickup

Place your order before 2:00 PM and we'll have it ready for pick-up today. Orders placed after 2:00 PM will be ready the next day.


Sunplay - Ogden
216 N 700 W
Building 4C - Bay 5
Ogden, UT 84404
Store hours:
9am - 5pm, M-F

Las Vegas

Sunplay - Las Vegas
2950 E Sunset Rd
Las Vegas, NV 89120
Store hours:
10am - 6pm, M-F
10am -4pm, Weekends

Item Details

Hayward CAT 3500 Chemical Automation System

Discover the latest in powerful water chemistry controllers complete with TDS and Salt monitoring. CAT 3500 controller is equipped with state-of-the-art sensing and control capabilities tailored specifically for salt chlorine applications. Powerful and intuitive, these new models offer the utmost in convenience in pH, ORP, conductivity/NaCI, backup sanitization and temperature.


  • pH and ORP controller with conductivity/NaCI
  • Professional Package
  • Dual sanitizer set points for back-up ORP control; temperature sensor for heater control
  • Auxiliary relay for control versatility
  • Comes with professional Series pH, ORP and Conductivity sensors for unsurpassed performance
  • Perfect complement to Saline C Series Salt Chlorine Generators
  • NSF/ANSI Standard 50 Certified

Monitoring and Controls:

  • pH
  • ORP
  • Temp
  • Water Level Tank (Additional Sensor Required - Sold Separately)
  • Tank Level (Additional Sensor Required - Sold Separately)
  • Digital Flow (Additional Sensor Required - Sold Separately)
  • Total Dissolved Solids
  • NaCl (Salt)
  • Backup Sanitization (Sencondary ORP Setpoint)

Features and Capabilities:

  • (1) Auxiliary Relays
  • PVC Backboard
  • Flow Cell/Flow Sensor
  • Installation Kit (2 Quick Connect Fittings and 30' of 3/8" Poly Tubing)
  • Gold ORP Sensor
  • Machined Flow Cell and Rotary Flow Sensor

Professional Package Includes:

  • Machined Acrylic Flow Cell with Rotary Flow Sensor
  • Asahi Ball Valves

Hayward CATPP3500

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