Description
Product Overview
The Merrill 710 Series filter valve is engineered for demanding water‑handling tasks. Constructed from lead‑free brass and finished with a robust steel exterior, it offers superior corrosion resistance and longevity. Featuring two 1-1/4″ female NPT (FNPT) outlets, a national pipe tapered inlet, and a spring‑loaded poppet with an abrasion‑resistant O‑ring, this valve delivers a positive seal and reliable performance up to 200 psi. Certified by IAMPO, it meets stringent industry standards for safety and durability, making it a trusted choice for industrial and scientific environments.
Usage
Designed for use in lakes, wells, ponds, and other water sources, the valve excels at filtering large debris while keeping pumps primed. Its dual‑port configuration allows simultaneous intake and discharge, facilitating efficient water flow in irrigation systems, groundwater extraction, and environmental monitoring setups. Ideal for technicians, contractors, and DIY enthusiasts who require a dependable solution for water filtration and pump protection.

Why Choose Us
Merrill brings decades of manufacturing expertise, ensuring each valve meets rigorous quality controls. The lead‑free brass construction eliminates contamination risks, while the steel finish provides added mechanical strength. IAMPO certification guarantees compliance with health and safety standards, and the spring‑loaded design prevents backflow, extending pump life and reducing maintenance costs.
Key Features
- Lead‑free brass body with steel exterior for maximum durability
- Dual 1-1/4″ FNPT ports enable versatile installation options
- Spring‑loaded poppet and abrasion‑resistant O‑ring ensure a tight, leak‑free seal
- IAMPO certified for safe use in potable water applications
- Handles up to 200 psi, ideal for high‑pressure industrial systems
FAQ
What size connections does this valve use?
The valve features a 1-1/4″ female NPT (FNPT) outlet on both ports and a national pipe tapered inlet, compatible with standard plumbing fittings.
Is the valve suitable for drinking water?
Yes, the valve is IAMPO certified and constructed from lead‑free brass, making it safe for potable water filtration.
Can this valve be used in high‑pressure applications?
Absolutely. It is rated for a maximum operating pressure of 200 psi, suitable for most industrial and scientific water systems.
How does the spring‑loaded design benefit pump operation?
The spring‑loaded poppet maintains a positive seal, preventing backflow and allowing the pump to stay primed even when filtering large debris.
What maintenance is required?
Periodically inspect the O‑ring for wear and replace it if necessary. Clean the inlet screen to ensure optimal flow and filter performance.




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