Z&W® 101DH - 24VAC controlled, 1" female threaded irrigation valve - Manual control, robust design, slow closing

Z&W® 101DH Solenoid Valve – 24VAC Operated, 1" Female Thread Professional Irrigation Valve with Flow Control

The Z&W® 101DH is a premium-grade, highly reliable, and durable solenoid valve specifically engineered for the professional zone control of automatic irrigation systems. The 1" female threaded connection is the most widely used industry standard, making it perfectly suited for seamless integration into residential, light commercial, or agricultural irrigation networks. Its 24VAC (alternating current) operation ensures universal compatibility with virtually all major irrigation controllers on the market (such as INKBIRD, Hunter, Rain Bird, Toro).

Why the Z&W® 101DH is the Best Choice for Your Irrigation System Layout:

• Pilot-Operated Diaphragm Structure: The hydraulically supported, balanced diaphragm technology guarantees precise and positive opening with minimal power consumption, as well as a completely drip-tight closure, even under fluctuating water pressure.
• Double Filtration System for Coil Protection: A dual filtration system located at the inlet protects the solenoid coil and delicate internal ports from suspended debris in the water (e.g., fine sand, rust, algae). This significantly extends the valve's lifespan and minimizes the risk of clogging or sticking.
• Water-Proof Encapsulated Solenoid Coil: The fully sealed, specially waterproofed electrical coil withstands high humidity, standing water, and harsh environmental conditions often found inside valve boxes (including buried underground enclosures), effectively preventing electrical shorts.
• Slow-Closing Function to Prevent Pipe Bursts: The smooth, delayed closing sequence prevents sudden pressure surges, commonly known as water hammer. This safeguards mainlines, sub-mains, drip tubing, and connection fittings from cracks and hydraulic shock.
• Manual Flow Control Handle: An ergonomic adjustment knob on top of the valve allows you to precisely limit or fine-tune the water flow to match the unique requirements of the specific zone (e.g., low-flow drip or micro-spray zones).
• Manual On/Off Override Switch: Independent of the electrical controller, the valve can be manually opened or closed at any time using the built-in manual switch. This is an invaluable feature for springtime system start-ups, autumn blow-outs (winterization), or routine on-site maintenance testing.

Specifications:

• Model: Z&W® 101DH
• Connection Size: 1" Female Thread (Standard NPT/BSP pitch)
• Control Voltage: 24 VAC (Alternating Current, 50/60 Hz)
• Construction: Highly durable, UV-stable, industrial-grade plastic body and bonnet
• Features: Flow Control + Manual ON/OFF + Slow Closing + Double Filtration

Who is it for? An ideal choice for homeowners and professional irrigation contractors seeking a long-term, maintenance-free solution that protects expensive hydraulic components from the devastating effects of water hammer.