Pressure Relief Valves & Tank Accessories

Pressure Relief Valves

Pressure Relief Valves
Tank Accessories

Tank Accessories

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MERRILL PRESSURE RELIEF VALVES

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Compare pressure settings, connection sizes, materials and system demand to find the right valve for your cold-water system.

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Comparison of four Merrill cold-water pressure relief valve groups
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EVERYDAY CHOICE Merrill no-lead brass pressure relief valve

No-Lead Brass

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CORROSION RESISTANT Merrill 304 stainless steel pressure relief valve

304 Stainless Steel

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HIGH CAPACITY Merrill heavy-duty no-lead brass pressure relief valve

Heavy-Duty No-Lead Brass

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PVC SYSTEMS Merrill PVC pressure relief valve

PVC

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Why Choose It? Simple, durable no-lead brass choice for most cold-water pressure systems. Choose stainless when corrosion resistance matters most. More flow capacity, larger connections and pressure options for demanding systems. Simple PVC option designed to pair with PVC tank tee systems.
Best For? Typical residential wells and pressure-tank systems. Corrosive water conditions or installations where long-term corrosion resistance matters. Larger pumps, higher-flow systems and larger piping. PVC tank tee installations and PVC piping systems.
What You Get Corrosion-resistant no-lead brass valve with lubricated seal. Durable 304 stainless steel valve with lubricated seal. Heavy-duty no-lead brass valve built for larger, higher-demand systems. Heavy-duty PVC valve built for cold-water systems.
Pressure Setting 75 PSI or 100 PSI 75 PSI or 100 PSI 75 PSI standard
Factory custom settings available		 75 PSI factory set
Connection Sizes 1/2" x 1/2"
3/4" x 1/2"
3/4" x 3/4" 		1/2" x 1/2"
3/4" x 1/2"
3/4" x 3/4" 		3/4" x 3/4"
1" x 1"
1-1/4" x 1-1/4"
1-1/2" x 1-1/2"
2" x 2" 		1/2" MIP x 1/2" FIP
Flow / System Demand Standard residential and light-commercial cold-water systems. Standard systems where corrosion resistance is the priority. High-flow applications.
Approx. 15-213 GPM depending on valve size and pressure.		 Standard PVC pressure-tank systems.
Material / Corrosion No-lead brass; corrosion resistant. 304 stainless steel; corrosion-focused option. Heavy-duty no-lead brass. Heavy-duty PVC.
Important Detail Two common relief settings and three connection combinations. Same basic sizes and pressure choices as brass, with stainless construction. Larger sizes, greater relief capacity and factory custom-pressure capability; recommended for water systems up to 150 PSI. Designed as a companion to Merrill PVC Tank Tees; 100% factory tested.