Top rated relief valves

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AI-generated summary · updated July 27, 2026 · verify details before purchase.

1 Best overall
Watts 3/4" Bronze Relief Valve 0536562

4.7/5 $15-$25

Durable bronze construction, ASME certified, reliable pressure relief for residential water heaters.
- High quality bronze
- ASME certified
- Easy installation
- Limited to 3/4" size
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2 Best value
Cash Acme AA2022 3/4" NPT Lead-Free Brass Relief Valve

4.6/5 $12-$18

Lead-free brass, affordable, widely used for water heater safety.
- Lead-free
- Affordable
- Trusted brand
- May leak if over-tightened
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3 Budget pick
Reliance 108382 3/4" x 3/4" Water Heater Relief Valve

4.5/5 $10-$16

Economical option for standard water heaters, widely available.
- Very affordable
- Standard fit
- Easy to replace
- Not lead-free
- Basic construction
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4 Best lead-free budget
Keeney 506K 3/4" Lead-Free Brass Relief Valve

4.4/5 $10-$14

Low-cost lead-free option, meets code requirements.
- Lead-free
- Low price
- Compliant
- Less durable than bronze
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5 Best for water systems
APEC Water 3/4" Brass Pressure Relief Valve

4.3/5 $15-$22

Suitable for RO systems and other water treatment equipment.
- Versatile use
- Solid brass
- Reliable pressure release
- Higher price
- Limited availability
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6 Commercial grade
Zurn 3/4" Bronze Relief Valve Z1700

4.6/5 $20-$30

Heavy-duty bronze, ideal for commercial water heating systems.
- Commercial quality
- Long lifespan
- Precise pressure setting
- Expensive
- Overkill for home use
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7 Best for hydronic systems
Sparco 3/4" Pressure Relief Valve 502M

4.4/5 $12-$18

Designed for hydronic heating systems with good reliability.
- Hydronic compatible
- Rugged
- Consistent performance
- Not for potable water
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8 Premium construction
Nibco 3/4" Bronze Relief Valve T-371-B

4.5/5 $18-$25

High-quality bronze valve with excellent durability and flow capacity.
- Premium materials
- High flow
- Long warranty
- Higher cost
- Heavy
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Buying advice

When selecting a relief valve, ensure it matches your system's pressure rating (typically 150 psi for residential water heaters) and size (commonly 3/4" NPT). Check for lead-free certification if required by local codes. Bronze valves offer greater durability than brass, but lead-free brass is more affordable. For commercial or high-use applications, invest in a higher-grade bronze valve. Always install with proper thread sealant and test periodically.

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Top rated relief valves

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