3/4 Mini Proportional Doser Pump 0.4-4% for Agriculture 1

3/4 Mini Proportional Doser Pump 0.4-4% for Agriculture 2

3/4 Mini Proportional Doser Pump 0.4-4% for Agriculture 3

3/4 Mini Proportional Doser Pump 0.4-4% for Agriculture 4

3/4 Mini Proportional Doser Pump 0.4-4% for Agriculture 5

3/4 Mini Proportional Doser Pump 0.4-4% for Agriculture 6

3/4 Mini Proportional Doser Pump 0.4-4% for Agriculture 7

3/4" Mini Proportional Doser Pump 0.4-4% for Agriculture

Place of Origin:

China

Samples:

$1621.51/acre | Min. order : 1 acre

Shipping:

Support Sea freight

Payments:

L/C,D/A,D/P,T/T,Western Union,MoneyGram,OA

Lead Time:

1-1000000(acres):15(days),>1000000(acres):To be negotiated(days)

Customization:

Graphic customization (Min. Order: 10000 sets),Customized logo (Min. Order: 10000 sets),Customized packaging (Min. Order: 10000 sets)

model number:

25mm

brand name:

HYRT

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Payment condition

color

bule/black

Certificate

ISO9001:2008

usage

Water Flow Medium

MOQ

Feature

Easily Install

Material

pp/pom

Size

3/4

Application

connection

Product name

Automatic Mixing Liquid Pump

place of origin

Shandong, China

type

Other Watering & Irrigation

Precise Compact Chemical-Resistant Easy-Install

This compact 3/4" mini proportional doser (0.4–4%) delivers precise Fertilizer dosing for irrigation systems, reducing chemical waste and improving crop consistency. Made from durable PP/POM with a 25mm connection and a low‑profile blue/black design, its easy-install shape and sturdy quality suit drip, sprinkler and filter systems for long-term field use. Professionally packaged for safe delivery and ISO9001-backed with pre-production samples and final inspections, it comes with flexible shipping and payment options to simplify procurement.

Compact Precise Proportional Injector

The 3/4 Mini Proportional Doser Pump (0.4–4%) is a compact automatic mixing liquid pump for agricultural watering and irrigation, featuring a 3/4" connection, PP/POM corrosion‑resistant body, and compact 25mm profile in blue/black. Its core function is precise proportional dosing of Fertilizer and other liquid inputs (0.4–4%) into drip, sprinkler and fertigation systems, offering adjustable, accurate injection and easy installation. Value attributes include ISO9001-backed quality control, low maintenance and efficient operation, while the simple, robust plastic structure and professional packaging ensure chemical resistance, durability and cost-effective use in export markets.

Precision Mini Proportional Dosing

The 3/4 Mini Proportional Doser Pump (0.4–4%) is a compact automatic mixing liquid pump designed for agriculture irrigation and precise Fertilizer injection. Made of durable PP/POM plastics with a 3/4 connection, blue/black finish, and easy installation, it delivers accurate dosing for drip and sprinkler systems. Built to industry standards with ISO9001 oversight and flexible delivery/payment options, this pump suits growers seeking reliable proportional dosing for watering and nutrient management.

◎ Compact Durable Precise

◎ Easy-Install Wide-Compatible

◎ Certified Efficient Economical

Precise Compact Reliable Dosing

Built by a precision agricultural brand with decades of flow-control expertise, the 3/4" Mini Proportional Doser Pump (0.4–4%) is engineered with corrosion-resistant materials and a compact housing for reliable field performance. It delivers accurate proportional dosing of liquids — including Fertilizer, acids and biostimulants — at adjustable 0.4–4% ratios, fitting standard 3/4-inch lines and integrating easily with drip and sprinkler irrigation systems to ensure uniform nutrient distribution. Highlights and advantages include energy-efficient operation, low maintenance design, quick calibration, and a compact footprint that reduces waste, improves crop health, and provides growers dependable, cost-effective fertilization control.

Material introduction

Constructed from high-grade polypropylene (PP) and POM plastics, the 3/4" Mini Proportional Doser Pump offers a lightweight yet robust housing and internal components designed for long-term field use. Those materials provide excellent chemical and corrosion resistance for handling concentrated fertilizer solutions at accurate 0.4–4% injection rates, while resisting UV exposure and abrasion in irrigation environments. The plastic construction also simplifies installation and maintenance, delivering precise proportional dosing in agricultural watering and mixing systems.

◎ PP housing

◎ POM internal components

◎ Composite assembly & standards

FAQ

What is the "3/4" Mini Proportional Doser Pump 0.4–4% and what agricultural tasks is it best for?

It is an inline proportional dosing injector with 3/4" connections that adds liquid concentrate at a user-selected ratio between 0.4% and 4% of the irrigation flow. Common agricultural uses are fertigation (water-soluble fertilizers), chemigation (pesticides/biocontrols), nutrient injection in greenhouses and hydroponics, acid/base pH correction, and disinfectant dosing for livestock water or washdown systems.

How should I install the pump in my irrigation system for reliable operation?

Install the unit in the main supply line with the 3/4" connections following the flow direction marked on the body. Fit it after the main filter or install a filter/strainer upstream so the pump sees clean water. Place the suction tube in the chemical tank with a foot valve and strainer. Add an anti-siphon/backflow preventer as required by regulations to protect potable water. Mount securely, avoid high-pressure spikes, and follow the manufacturer’s recommended pressure and temperature limits.

How do I set and check the dosing percentage (0.4–4%) so the correct amount of concentrate is injected?

Use the dosage adjustment control (knob or dial) to select the target percentage. Calibrate by running a known volume of irrigation water (for example 100 L) and collecting the injected concentrate; the target injection volume should equal the selected percentage of total flow (e.g., 1% → ≈1 L injected per 100 L water). Adjust the dial until measured injection matches the target. For small volumes, use a longer run-time to improve accuracy. Always re-check after changes in supply pressure or flow.

What chemicals are compatible and which should I avoid with this mini proportional doser?

Compatible liquids typically include water-soluble fertilizers, many pesticides, disinfectants, and acids/alkalis commonly used in agriculture—provided they are diluted according to label instructions. Avoid highly viscous liquids, solvents, strong oxidizers or reducers beyond the pump’s material compatibility, and suspensions with large solids that can clog lines. Always consult the pump manufacturer’s chemical compatibility chart and wear appropriate PPE.

What routine maintenance is required to keep the pump operating correctly?

Weekly or before each use: inspect the suction line, foot valve strainer and system filters. Monthly: check seals, check valves and dosing adjustment for wear; flush the pump and suction tube with clean water after each chemical change or at the end of day to prevent buildup. Replace diaphragms, O‑rings and foot valve parts as recommended by the supplier. Winterize by flushing and storing indoors if freezing is possible.

I’m seeing no dosing or inconsistent dosing — what troubleshooting steps should I take?

Check these common causes: ensure the suction tube is fully submerged and foot valve not clogged; confirm the tank has liquid and the strainer is clear; verify the dosing setting and re-calibrate; inspect for air leaks in the suction line and tighten fittings; examine check valves and diaphragms for wear or damage; ensure system pressure and flow are within the pump’s operating range. If problems persist, consult the pump manual or supplier for parts replacement and service.

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