Uniflow and Liquidtrol

Air Operated Pumps and Pump Controls for Automatic or Manual Dispensing

Knight’s Uniflow Air Operated Double Diaphragm pump is the engine that drives an entire range of new chemical management solutions for the Food Chain Hygiene, Laundry, and Industrial markets. In combination with the Liquidtrol, the Uniflow becomes a cost-effective chemical control system with accurate liquid dispensing for food & beverage, dairy, laundry, and industrial applications.


1/4 " & 1/2" Air Operated Double Diaphragm Pumps

"AODD pumps are engineered for aggressive chemicals and high duty cycle applications."

Knight’s Air Operated Double Diaphragm pump is the engine that drives an entire range of new chemical management solutions for the Food Chain Hygiene, Laundry, and Industrial markets.

  • AODD’s are engineered for aggressive chemical, high duty cycle applications.
  • With minimal moving parts, the AODD pump has an Extended Life
  • Variable Metered Flow Control
  • High Speed Flow: KAP-50 (53 lpm) and KAP-25 (15 lpm)
  • Cross Application Advantages in Food & Beverage, Dairy, Laundry, and Industrial
  • Dependable and Low Maintenance with a patented Air Valve System

Key Features:


KAP-25
1/4" AODD Pump
4 gal/min (15 liters/min)


Uniflow KAP-50
(1/2" AODD Pump)
14 gal/min 53 liters/min

KAP-25
The KAP is a proven and reliable 1/4" air operated double diaphragm pump that delivers 4 gallons per minute pumping power. The condense AODD design is ideal for on-demand intermittent pumping requirements. The KAP-25 is built for years of operation and low cost of ownership.

The KAP-25 features a pattented ESADS+Plus system. This in-line serviceable air valve system ensures reliable and accurate performance.

The KAP-25 also offers tremendous versatility. Available in Polypropylene and Kynar wetted materials of construction, with Santoprene, Viton or PTFE interior.

Uniflow KAP-50
Constructed of heavy duty plastic, the center section resists corrosion from even the most aggressive chemicals, while providing injection speed and uniform flow under the most rigorous environmental conditions.

Fast priming and the industry’s best life cycle performance will improve your chemical process with the lowest possible cost of ownership.

The KAP-50 1/2” size pumps are for the jobs that require higher flow rates with accuracy and reliability.



Air Pump Controls for Automatic Dispensing

The Liquidtrol Chemical Control System is an advanced controller for the Uniflow Air Operated Double Diaphragm Pump. In combination with the Uniflow, Liquidtrol0s cost-effective microprocessor electronics initiates, limits, cycles, triggers or regulates pumping activity. Knight offers three versions depending whether you want to control the pumping activity through a time feed, event feed, or cycle feed.

Features & Benefits:

  • Preassembled/Configured Pump Control
  • Quick, Simple Installation and Programming
  • Watertight Thermo Plastic Control Enclosure w/Built-in Air Solenoid Pressure Regulator,
  • Pressure Gauge and Filter/Dryer
  • Private Labeling Available

ATC500 “Time Feed”
Microprocessor Limit Time with 0-12 min Programmable Run Time w/Lock-out Function
• Start Feed By Pressing Button
• Start Feed By Electronic Signal
• Control Feed By Electronic Signal
• Optional Remote Activator
ATC300 “Event Feed”
Microprocessor Event Timer
• 20 Programmable Feed Events/Per Day
• Battery Backup 24 Hour Clock
• LCD Display
• Non-Volatile Memory
ATC200 “Cycle Feed”
Microprocessor Cycle Timer
• 0 - 2 Minute Pump On Time
• 0 - 90 Minute Pump Off Time
• Apply Power To Start Cycle

UNIFLOW Air Operated Double Diaphragm Pump Units
KAP-25
Include: Kynar suction and discharge fittings
PART # DESCRIPTION
1600826

KAP-25-SP, 1/4" AODD Pump, Polypropylene/Santoprene, 4 GPM (15 LPM)

1600827 KAP-25-TP, 1/4" AODD Pump, Polypropylene/PTFE, 4 GPM (15 LPM)
1600828 KAP-25-SK, 1/4" AODD Pump, Kynar/Santoprene, 4 GPM (15 LPM)
Cabinet for KAP-25 AODD Pumps
7640638 AODD Pump Cabinet, Stainless Steel for 1/4" AODD Pumps w/ Mounting hardware
KAP-50
Include: Kynar suction and discharge fittings
PART # DESCRIPTION
  1600968

KAP-50 AODD Pump Poly Santoprene w/ Fittings, Hose Clamps and Suction Screen

  1600945 KAP-50 AODD Pump Poly/PTFE w/ Fittings, Hose Clamps and Suction Screen
  1600979 KAP-50 AODD Pump Kynar/Santoprene w/ Fittings , Hose Clamps and Suction Screen
  1600986 KAP-50 AODD Pump Kynar/PTFE w/ Fittings, Hose Clamps and Suction Screen
  1600979-1 KAP-50SK 1/2” AODD Pump Kynar Body/Santo W/O Kit
1600968-1 KAP-50SP 1/2” AODD Pump Polypro Body/Santo W/O Kit
1600986-1 KAP-50TK 1/2” AODD Pump Kynar Body/PTFE W/O Kit
1600945-1 KAP-50TP 1/2” AODD Pump Polypro Body/PTFE W/O Kit
Cabinet for KAP-50 AODD Pumps
7640631 Flow Guard AODD pump cabinet, stainless steel for 1/2" AODD pumps w/ mounting hardware
  7407128 Regulator/ Filter/ Gauge mounted in case
KAP-38 & KAP-50 Options
PART # DESCRIPTION
0600508 Air pressure Regulator/gauge Kit with mounting bracket, air fitting and ball valve
2200082 Air Operated A/S valve with PTFE seals 3/8”
0200905 Plastic wall bracket for Uniflow pumps with mounting hardware
7541100 Stainless steel container shelf for 2, 2.5 or 5 gallons containers

AIR PUMP CONTROLLERS
Liquidtrol Air Pump Timer Controls
PART # DESCRIPTION
7641075-07

ATC-500: Air Pump Control w/ Limit Timer, Air Solenoid, Regulator, Filter/Dryer,
Gauge (115/230 VAC)

7641073-07 ATC-300: Air Pump Control w/ Programmable Event Timer, Air solenoid, Regulator,
Filter/Dryer, Gauge (115/230 VAC)
7641072-07 ATC-200: Air Pump Control w/Cycle Timer, Air Solenoid, Regulator, Filter/Dryer,
Gauge (115/230 VAC)
Air Pump Pneumatic Pump Activator
PART # DESCRIPTION
  7640619

AODD momentary switch

  7407013 Kit, regulator, w/ bracket and hardware

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