Menu

We independently review everything we recommend. When you buy through our links, we may earn a commission at no additional cost to you. Learn more ›

Best PETOX Solenoid Valves

PETOX solenoid valves are reliable replacements for Aprilaire whole-house humidifiers. Featuring 24V AC operation at 2.3W and 60Hz, these valves ensure precise water control in HVAC systems.

2 products

Select a Product

Click on a product from the list to view its details.

PRIME

ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Last update on . Affiliate links, prices, images, product titles, and highlights from Amazon Product Advertising API.

Pros

Cons

Key Features

User Reviews

Your review will be visible after approval.

Loading reviews...
PETOX 4040 Water Solenoid Valve for Aprilaire Humidifiers 400 500 600 700 - 24V AC Brass Replacement B2015-S85 Blue

This PETOX 4040 solenoid valve replaces the water valve in Aprilaire humidifiers like models 400, 500, 600, and 700 series using 24V AC power. Its brass construction and included strainer ensure reliable humidity control and easy DIY installation for homeowners.

  • Seamless compatibility with popular Aprilaire models 400-700 series for hassle-free replacements
  • Durable brass and stainless steel build lasts longer, resisting corrosion for years of service
  • Precisely controls water flow to maintain 35-45% indoor humidity, easing dry air discomfort
  • Quick installation with basic tools—complete in minutes without calling a pro
  • Includes compression nut, washer, and strainer for immediate, leak-free setup

Broad model compatibility covers most Aprilaire whole-house humidifiers. High-pressure rating up to 125 PSI handles demanding installations. Simple plug-and-play design with all necessary fittings included.

Not compatible with Aprilaire models 330, 445, 110, 112, 350, or 360. Requires disconnecting power supply before installation. Inline strainer may need periodic cleaning for peak performance.

PETOX 4040 Humidifier Solenoid Valve A2012-S118 Replacement for Aprilaire 400, 550, 600, 700 - Brass, 24V Durable Water Valve

This PETOX 4040 solenoid water valve replaces A2012-S118 and others in Aprilaire whole-house humidifiers like models 400, 550, 600, and 700. Its brass construction and wide compatibility make it a durable, easy-install choice for maintaining optimal indoor humidity.

  • Seamless compatibility with Aprilaire models 400, 550, 600, 700 and more for hassle-free replacements
  • Brass and stainless steel build ensures long-term durability and reliable water flow control
  • Maintains ideal 35-45% indoor humidity to reduce dryness and boost comfort year-round
  • Quick installation in minutes using just a screwdriver and wrench, no professional help needed
  • Includes compression nut, washer, and inline strainer for complete, ready-to-use setup

Broad model compatibility covers most Aprilaire whole-house humidifiers. Premium materials resist corrosion for extended lifespan. Simple DIY installation saves time and money.

Requires disconnecting power supply before installation for safety. Basic plumbing tools like wrench needed for setup. Specific to 24V 60Hz systems, check compatibility first.

Welcome to our PETOX Solenoid Valves category, where you'll find high-quality replacement valves tailored for Aprilaire whole-house humidifiers. These essential components control water flow precisely, ensuring optimal humidity levels in your home or light industrial setup. With just two standout models available, choosing the right one is straightforward, helping you maintain reliable performance without hassle.

Understanding PETOX Solenoid Valves

PETOX specializes in durable solenoid valves that excel in humidification systems. Known for their robust construction and compatibility with popular Aprilaire units such as the 400, 550, 600, 700, and more, these valves stand out for their consistent operation under standard household pressures. Unlike generic alternatives, PETOX valves prioritize seamless integration, reducing downtime and enhancing system longevity.

As part of the broader Solenoid Valves selection in our Hydraulics, Pneumatics & Plumbing section, PETOX products deliver value through precise engineering. They operate at 24V AC, 2.3W, and 60Hz, making them ideal for residential HVAC applications where reliability is key.

Key Features to Consider When Buying PETOX Solenoid Valves

When shopping for these valves, focus on compatibility, voltage specs, and build quality to match your humidifier model perfectly. Here's what matters most:

  • Compatibility: Ensure the valve fits your Aprilaire model—both PETOX options cover series like 400, 550, 600M, 700, and 760A.
  • Voltage and Power: Standard 24V AC at 2.3W and 60Hz for efficient, quiet operation without overloading your system.
  • Pressure Rating: Up to 125 PSI in select models, handling varying water line pressures effectively.
  • Material and Color Coding: Color-coded (yellow or blue) for easy identification, with corrosion-resistant bodies for longevity.
  • Replacement Equivalents: Direct substitutes for OEM parts like B2035-S2/S5 or B2015-S85, simplifying upgrades.

These features make PETOX valves a smart choice for DIY enthusiasts and HVAC pros alike, offering plug-and-play reliability.

Comparing Top PETOX Models

Our category features two excellent options, each suited to specific needs within Aprilaire humidifiers.

The 4040 Humidifier Solenoid Replacement Water Valve A2012-S118 (Yellow) is perfect for models 400, 550, 558, 600M, 600, 700, 700M, 768, and 760A. It replaces B2035-S2, B2035-S5, and B2035-S54-24V, delivering 2.3W at 60Hz for smooth water inlet control.

The 4040 Humidifier Water Solenoid Valve (Blue) supports models 400, 500, 600, 700, 220, and 224, as a replacement for B2015-S85-24V. With a 125 PSI rating, it's ideal for systems with higher pressure demands, maintaining the same 24V AC, 2.3W, 60Hz specs.

Choose yellow for broader model coverage in standard setups, or blue for reinforced pressure handling. Both embody PETOX's commitment to quality, outperforming budget options in endurance tests.

If you're exploring alternatives, check out USSolid Solenoid Valves or Baomain Solenoid Valves for different specs, though PETOX shines in humidifier-specific applications.

Common Use Cases for PETOX Solenoid Valves

These valves are primarily used in whole-house humidifiers to regulate water flow into evaporator pads, preventing over-humidification or dry air issues. They're common in residential HVAC systems during winter months, but also appear in light commercial setups like greenhouses or small industrial dehumidifiers.

Installation is straightforward: shut off water and power, swap the old valve, and test. Regular maintenance, like cleaning the inlet screen, extends life significantly. For broader plumbing needs, explore our Valves or Fittings categories.

Frequently Asked Questions

Are PETOX solenoid valves compatible with all Aprilaire models?

Yes, both models cover major series like 400, 600, and 700. Verify your exact model against the product specs for the best match—the yellow A2012-S118 offers wider compatibility.

What sets PETOX apart from competitors like USSolid or Beduan?

PETOX focuses on humidifier precision with OEM-equivalent designs, superior pressure handling, and consistent 2.3W efficiency. Competitors may suit general pneumatics better, but PETOX excels in HVAC replacements.

Do PETOX valves come with a warranty?

Most PETOX products include a standard manufacturer warranty—check product listings for details. Their durable build minimizes claims, backed by responsive customer support.

Which PETOX model should I choose: yellow or blue?

Opt for yellow (A2012-S118) for standard Aprilaire setups; blue (B2015-S85) for higher PSI needs. Both perform reliably at 24V AC.

How do I maintain a PETOX solenoid valve?

Annually inspect for debris, clean the strainer, and test solenoid activation. Proper care ensures years of trouble-free operation in your humidifier.