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AquFlow 1000 - Diaphragm Metering Pump


123GPH + High PSI + Highly Accurate

S1000 - AquFlow Metering PumpsCarrying on the legacy of the Hydroflo chemical feed pump design, the AquFlow Series 1000 chemical dosing pump is our most popular line of hydraulically actuated diaphragm metering pumps. After four decades of continuous product development and improvement, the Series 1000 precision metering pump has proven itself as an industry standard for chemical dosing pumps.

Its rugged and compact, unibody chemical pump design allows it to withstand pressures of up to 3000 PSI and flow capacities up to 123 GPH. Like all AquFlow diaphragm chemical pumps, the Series 1000’s drive parts are fully enclosed in a single unibody housing and submerged in lubricating hydraulic oil, minimizing friction and wear. The dosing pump diaphragm provides accurate controlled amounts of chemicals and require significantly less maintenance than peristaltic pump tubing.

AquFlow Series 1000 chemical injection pump was the first to have deployed “Ruggedized Design” that we are well known for today. It is built to handle difficult chemical dosing liquids such as slurries, off-gasing and high viscosities, making it suitable for applications in water and wastewater treatment, oil and gas refinery, agricultural fertigation and more.

Liquid end materials are available in a variety of options including 316SS, Hastelloy C, Alloy 20, PVC, PVDF and PTFE. Depending on your chemical metering needs, we can help you choose the right metering chemical pump model needed for your application. Complies with API 675 standards for positive displacement pumps.

Chemical Metering Pump Specifications

Flow CapacityUp to 123 GPH (Duplex)
PressureUp to 3,000 PSI
DesignUnibody – Fewer Parts
Metering Accuracy+/- 1%
Capacity ControlsManual/Auto
SafetyBuilt-in internal relief valve
AvailabilityDuplex or Double Flow Capacity
Liquid HandlingAble to handle difficult liquids like slurries, off-gasing, high viscosities

S1000 Dimensions



Flow Capacity Adjustment0–100% while the pump is running or stopped
Turndown RatioStroke Length 10:1

Stroke Frequency 10:1

Combined 100:1
Metering AccuracySteady State: ± 1%

Linearity: ± 1%

Combined: ± 1%
Max. Process Fluid Temp.Custom engineered metallic liquid end: 500°F

Metallic liquid end/PTFE diaphragm: 250°F (121°C)

Plastic Head: 140°F (60°C)
Plunger Stroke Length0.75
Hydraulic Oil Capacity2qts (simplex)

3qts (duplex)
Displacement Per Stroke (by plunger size)3/8″ 0.0828 cu. in. (1.35 ml)

9/16″ 0.1864 cu. in. (3.50 ml)

3/4″ 0.3313 cu. in. (5.43 ml)

7/8″ 0.4510 cu. in. (7.40 ml)

1-1/8″ 0.7872 cu. in. (12.9 ml)

1-5/8″ 1.51 cu. in. (24.71 ml)
Liquid End Material Options316 SS, Alloy 20, Hastelloy C, PVC, PVDF and PTFE

Performance Table

Model No.Capacity
PSIG (bars)
CA4T 3829-0X0130.55 (2.1)3000 (206)293/8″1/4″Curves
CA4T 3858-0X0131.1 (4.2)3000 (206)583/8″1/4″Curves
CA4T 3897-0X0131.85 (7)3000 (206)973/8″1/4″Curves
CA4T 3812-0X0132.25 (8.5)3000 (206)1173/8″1/4″Curves
CA4T 3814-0X0132.7 (10.2)3000 (206)1403/8″1/4″Curves
CA4T 3817-0X0133.28 (12.4)3000 (206)1703/8″1/4″Curves
CJ4T 5629-0X0141.25 (4.7)2000 (137)299/16″3/8″Curves
CJ4T 5658-0X0142.5 (9.5)2000 (137)589/16″3/8″Curves
CJ4T 5697-0X0144.2 (15.9)2000 (137)979/16″3/8″Curves
CJ4T 5612-0X0145.25 (19.87)2000 (137)1179/16″3/8″Curves
CJ4T 5614-0X0146.09 (23.1)2000 (137)1409/16″3/8″Curves
CJ4T 5617-0X0147.4 (28.0)2000 (137)1709/16″3/8″Curves
CJ4T 7529-0X0142.25 (8.5)1100 (75)293/4″3/8″Curves
CJ4T 7558-0X0144.5 (17.1)1100 (75)583/4″3/8″Curves
CJ4T 7597-0X0147.5 (28.4)1100 (75)973/4″3/8″Curves
CJ4T 7512-0X0149.05 (34.3)1100 (75)1173/4″3/8″Curves
CJ4T 7514-0X01410.8 (40.9)1100 (75)1403/4″3/8″Curves
CJ4T 7517-0X01413.28 (50.27)1100 (75)1703/4″3/8″Curves
CJ4T 8729-0X0143.05 (11.5)700 (48)297/8″3/8″Curves
CJ4T 8758-0X0146.1 (23.0)700 (48)587/8″3/8″Curves
CJ4T 8797-0X01410.2 (38.6)700 (48)977/8″3/8″Curves
CJ4T 8712-0X01412.5 (47.3)700 (48)1177/8″3/8″Curves
CJ4T 8714-0X01414.7 (55.6)700 (48)1407/8″3/8″Curves
CJ4T 8717-0X01417.9 (67.8)700 (48)1707/8″3/8″Curves
CJ4T 11329-0X0145.33 (20.2)400 (28)291-1/8″3/8″Curves
CJ4T 11358-0X01410.6 (40.1)400 (28)581-1/8″3/8″Curves
CJ4T 11397-0X01417.8 (67.4)400 (28)971-1/8″3/8″Curves
CJ4T 11312-0X01422 (83.3)400 (28)1171-1/8″3/8″Curves
CJ4T 11314-0X01425.7 (97.3)400 (28)1401-1/8″3/8″Curves
CJ4T 11317-0X01431.27 (118.3)400 (28)1701-1/8″3/8″Curves

Capacity Control Options

  • Dual Axis with both stroke length and stroke speed adjustable.

Stroke Length Controls

  • Manual: Standard on all pumps.
  • Electric: Electric stepper motor. Capable of 4-20mA input.
  • Pneumatic: Runs on 30 PSI air for hazardous environment.

Liquid Handling Options:


  • For liquids with suspended solids/slurries that may clog. Good for high viscosity liquids also.

Degassing Valve

  • Some challenging liquids can cause air locking due to off gassing. Our pump head with degassing valve ensures accurate and consistent pumping by letting our gas bubbles from the pump head.

Double Ball Check Valve

  • An added measure of assurance that you have the position valve shut off.

Tungsten Carbide Valve Balls

  • For abrasive liquids.

Leak Detection Options:

Leak Detection

  • There are two types of leak detection options available with AquFlow pumps.


  • Conductivity probe between 2 diaphragms to sense any break or rupture.


  • Uses a vacuum switch between 2 diaphragms to sense any rupture or failure.

Other Options:

Liquid Connections


Motor Options

  • Enclosure: TEFC, TENV, Explosion Proof, Washdown
  • Power Supply: ACV 115V, 230V, 380V, 460V, DC-12, 24, 90, 180, Single Phase, 3-Phase