Dosatron 40 GPM, 1.25 to 7.5mL, Bypass Switch-VITON-Union

Dosatron D40MZ3000 40 GPM Water-Powered Injector, Viton Seals – D40MZ3000BPVFHY

The Dosatron D40MZ3000BPVFHY is the standard Viton seal configuration of the D40MZ3000 high-flow water-powered proportional injector. It delivers the same 40 GPM flow capacity, 1:3000 to 1:500 dilution range, and bypass switch functionality as the D40MZ3000BPAFHY but with Viton (FKM) seal assemblies — the most widely compatible seal material for hydroponic nutrient solutions and pH adjusters.

Viton seals are the default choice for most NDS installations because standard liquid hydroponic nutrients, pH Down acids (phosphoric, sulfuric, citric), and pH Up bases (potassium hydroxide) are all within Viton's compatibility range. The included union allows the injector to be disconnected from the NDS plumbing without cutting lines. The 1-1/2-inch NPT connection size makes it compatible with Hi-Flo NDS installations and large-facility irrigation systems.

Key Features & Benefits

• 40 GPM High-Flow Capacity — Handles facility water supply flow rates from 2.2 to 40 GPM.
• Viton Seal Assembly — Standard Viton seals for compatibility with most hydroponic nutrients and pH adjusters.
• 1:3000 to 1:500 Dilution Range — 0.03% to 0.2% — 1.25 to 7.5 mL concentrate per gallon of water.
• Bypass Switch — Routes water through without dosing for flushing or plain-water delivery.
• Union Included — Factory-included union for clean integration and easy removal from NDS plumbing.
• 1-1/2-Inch NPT Connections — Connection size for high-flow NDS Hi-Flo systems and large-facility plumbing.

Who Should Use This Injector

The D40MZ3000BPVFHY is for high-flow facilities using concentrate dilution ratios in the 1:3000 to 1:500 range with standard hydroponic nutrients or pH adjusters that fall within Viton's chemical compatibility. It is the standard-seal variant of the D40MZ3000 line — suitable for most applications without requiring upgraded seal materials.

Choosing Between D40MZ3000BPVFHY and D40MZ3000BPAFHY

The D40MZ3000BPVFHY (Viton seals) and D40MZ3000BPAFHY (AFLAS seals) are identical in all specifications except seal material. Viton is chemically compatible with the vast majority of hydroponic liquid nutrients, pH adjusters, and irrigation additives. AFLAS is specified only when a specific chemical in use — such as certain amines or ketones — is known to degrade or swell Viton seals. For most standard grow facility applications, the Viton-sealed D40MZ3000BPVFHY is the appropriate choice and the more cost-effective option.

Frequently Asked Questions

What is the dilution range?

1:3000 to 1:500 (0.03% to 0.2%), or 1.25 to 7.5 mL of concentrate per gallon. That range suits low-dose nutrient supplements and additives.

Why choose Viton seals over AFLAS?

Viton is compatible with most standard hydroponic nutrients and pH adjusters and is the standard configuration. AFLAS is specified only when a specific chemical is incompatible with Viton, so most growers can use this Viton model without issue.

Does this injector require electricity?

No, it is water-powered — the incoming water pressure drives the dosing mechanism. There is no motor, control board, or power cord involved.

What connection size does it use?

1-1/2-inch NPT. This matches Hi-Flo NDS plumbing and large-facility irrigation systems.

When should I still consider the AFLAS version instead?

Consider the AFLAS version (DS40GPM1.25BSAFU) when the specific concentrate or pH adjuster you use is known to degrade Viton, such as certain amines or ketones. Absent that known incompatibility, this Viton model is the standard and more economical choice.