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Plastic Valves

Plastic Solenoid Valves: Technical Buying & Repair Guide

Overview

ElectricSolenoidValves.com offers a robust inventory of plastic solenoid valves engineered for versatility, corrosion resistance, and cost-effectiveness. Trusted by manufacturing engineers and DIY hobbyists alike, these electrically actuated valves are the ideal solution for industrial automation, OEM projects, liquid dosing, and home appliance repairs. We stock both normally closed (NC) and normally open (NO) configurations across a wide variety of connection sizes.

Need a different mechanism? This page features our plastic solenoid valves. If your setup requires UPVC) Plastic Ball Valves, click here to browse our ball valves.

Material Anatomy & Technical Specifications

For engineering layouts or structural planning, our plastic valves provide a high-performance, non-reactive alternative to metal alloys.

  • Valve Body Construction: Manufactured from solid, high-grade engineering plastics, including Polypropylene (PP), Polyoxymethylene (POM/Acetal), or Nylon 66. Please see the technical details on each specific product page for the exact plastic designation used.

  • Seal & Diaphragm Material: Equipped with an Ethylene Propylene Diene Monomer (EPDM) diaphragm, delivering high chemical resistance and a wide operating pressure and temperature range.

  • Internal Components: The moving internal components—including the plunger, spring, and orifice tube—are manufactured from corrosion-resistant Stainless Steel.

Are Plastic Solenoid Valves Safe for Drinking Water?

Yes. All plastic solenoid valves sold on ElectricSolenoidValves.com are completely lead-free, non-toxic, and safe for potable water systems. Most materials used in the configuration of our valves comply with NSF/ANSI Standard 61, the legally recognized US standard for the assessment of drinking water contact materials, components, and devices. Combined with non-toxic EPDM seals and food-grade stainless steel internals, these valves are perfectly suited for residential drinking water, filtration systems, and commercial food or beverage systems.

Advantages of Engineering Plastics vs. Metal Valves

Plastic is a durable, cost-effective body material for valves used in media control applications. Key advantages include:

  • Lower Price Point: Significantly lower priced than stainless steel or brass valves, reducing overall project budgets.

  • Lightweight Design: Exceptionally lightweight compared to metal alternatives, minimizing physical stress on tubing networks and piping.

  • Corrosion Resistance: Inherently immune to rust and chemical pitting from a wide variety of chemicals and saltwater.

  • Safe for Potable Systems: No lead and no BPA materials are used in their construction.

Push-Connect vs. Threaded Options

In addition to standard male and female threaded NPT options, we carry several sizes of quick-connect push-in plastic valves. These variations allow for rapid, tool-free installation onto flexible tubing. They are highly popular for space-constrained or high-maintenance systems, including:

  • Under-sink water filters and reverse osmosis (RO) systems

  • Commercial dishwashers and washing machine repairs

  • Hydroponic, aquaponic, and automatic drip irrigation setups

Selection Criteria: Choosing the Right Plastic Valve

Before purchasing, evaluate these four critical parameters to ensure optimal valve performance in your system:

1. Media Compatibility

Identify the exact fluid or gas flowing through your system. Our plastic water valves are excellent for air, liquids, water (both potable and saltwater applications), and a variety of mild chemicals. *Please consult a chemical expert to confirm the compatibility of these valves for your specific concentration needs.

2. Circuit Function (Normally Open vs. Normally Closed)

  • Normally Closed (NC): These plastic solenoid valves block media from flowing while in the unpowered position and require continuous electricity to open and stay open.

  • Normally Open (NO): These valves allow media to run through consistently until the electric actuator is energized to close the valve.

3. AC vs. DC Control Voltage

Match your valve's solenoid coil to your available power supply:

  • For standard residential wall outlets in the US, select a 120VAC valve.

  • For automotive, marine, solar, or battery-powered systems, select a 12VDC valve.

4. Pressure, Temperature, & Flow Limits

Maximum operating pressure limits, minimum/maximum temperature ratings, and flow rates vary based on the orifice size and coil wattage.

Engineering Note: Generally, plastic body solenoid valves have narrower pressure and temperature operating envelopes than brass or stainless steel alternatives. Always verify your maximum system pressure against the specification sheets provided on the individual product pages.