TL;DR
Selecting the correct solenoid valve for an irrigation system requires matching the valve's operating pressure range, flow capacity, and solenoid type to the specific application. The YT210 series solenoid valves from INOVATO cover a recommended operating pressure range of 0.069 to 1.0 MPa (0.7-10.0 bar / 10-145 PSI) and a flow range of 2.8 to 33 m³/h, with solenoid options including AC solenoid, DC-latching solenoid (pulse), and mechanical solenoid variants. This guide breaks down the selection process by pressure range — low (0.7-2.0 bar), medium (3.0-6.0 bar), and high (7.0-10.0 bar) — with specific YT210 configuration recommendations, flow data, and typical application scenarios for each range.
Understanding the YT210 Series Specifications
The YT210 series is a family of hydraulic solenoid valves designed for irrigation system control. The valve body is constructed from engineering-grade materials with female NPT or BSPT threaded connections. The series covers five standard inlet sizes — 1/2 inch (DN15), 3/4 inch (DN20), 1 inch (DN25), 1-1/2 inch (DN40), and 2 inch (DN50) — each paired with a specific flow capacity and pressure rating.
The key specifications that define the YT210 series are consistent across all sizes: a recommended operating pressure range of 0.069 to 1.0 MPa, a maximum temperature rating of 60°C (140°F), and a standard warranty period of two years. The flow capacity scales with the valve size: the 1/2 inch YT210 delivers up to 2.8 m³/h at the recommended pressure range, while the 2 inch size handles up to 33 m³/h at the same pressures. The solenoid options — AC solenoid for standard grid-powered controllers, DC-latching solenoid (pulse) for battery-operated field controllers, and mechanical solenoid for manual override applications — give the installer flexibility to match the valve to the specific control system without changing the valve body.
For irrigation system designers, the most important takeaway from the YT210 specifications is the recommended pressure range: 0.069 to 1.0 MPa. This is a wide operating window that covers almost all standard irrigation applications, from low-pressure drip systems running at 0.7 bar to high-pressure impact sprinkler systems operating at 8-10 bar. The valve body and solenoid assembly are designed to operate reliably across this range. Below 0.069 MPa, the valve may not fully open due to insufficient hydraulic pressure. Above 1.0 MPa, the valve seat and diaphragm assembly may experience accelerated wear and the solenoid may struggle to maintain a seal against the higher pressure differential.
Low-Pressure Range: 0.7-2.0 Bar (0.069-0.2 MPa)
The low-pressure range covers gravity-fed irrigation systems, small-scale drip irrigation networks, and systems operating at the tail end of long supply lines where pressure drop has reduced the available head. This is the most common pressure range for residential garden irrigation and for the downstream sections of large agricultural systems where the main line pressure has been reduced by friction losses through filters, fittings, and long pipe runs.
At pressures below 2.0 bar, the YT210 valve opens reliably because the minimum opening pressure of 0.069 MPa (0.69 bar) is well below the operating range. The flow rate at these low pressures is limited by the pressure differential available across the valve: at 0.7 bar, the 1/2 inch YT210 delivers approximately 2.8 m³/h, while the 2 inch valve at the same pressure delivers approximately 8 m³/h. These flow rates are adequate for residential drip irrigation zones or small greenhouse irrigation circuits.
For low-pressure applications, we recommend the DC-latching solenoid (pulse) version of the YT210. Battery-operated irrigation controllers are common in low-pressure drip systems because they can be installed at remote field locations without running electrical cable. The DC-latching solenoid draws power only during the switching pulse — typically 20-40 milliseconds — and holds its state without continuous power draw. This allows a standard 9V battery to operate the valve for an entire growing season, or approximately 6,000-8,000 switching cycles.
One practical consideration at low pressures is that the flow control feature — available on the 3/4 inch and larger YT210 models — becomes an important tool for fine-tuning the output at each valve station. When operating at 0.7-1.5 bar, the flow control allows the installer to limit the maximum flow through the valve to match the downstream emitter or sprinkler requirements, preventing over-supply to low-lying zones that could cause soil erosion or water pooling.
Medium-Pressure Range: 3.0-6.0 Bar (0.3-0.6 MPa)
The medium-pressure range is where the majority of commercial and agricultural irrigation systems operate. Sprinkler systems, rotor zones, and medium-scale drip irrigation networks typically run at 3.0-5.0 bar at the valve outlet. The YT210 series is well suited to this range because the valve's recommended operating pressure lies comfortably within these values, and the solenoid options available cover the full range of control requirements.
At 3.0-6.0 bar, the flow rate through the YT210 increases significantly compared to the low-pressure range. The 1 inch YT210 at 4.0 bar delivers approximately 15-18 m³/h, and the 2 inch valve at the same pressure delivers up to 30 m³/h. These flow rates support large sprinkler zones covering 500-2,000 square meters per station, depending on the sprinkler spacing and nozzle configuration.
For medium-pressure commercial applications, we typically recommend the AC solenoid version of the YT210, paired with a standard 24 VAC irrigation controller. The AC solenoid provides a strong, consistent magnetic field that ensures reliable valve cycling across the full pressure range, and the 24 VAC power supply is standard in most commercial irrigation control panels. The AC solenoid draws approximately 300-400 mA during activation and holds with approximately 200 mA continuous draw.
The pressure regulator accessory — the PRF-01 pressure regulating filter and the SNL-ADJ adjustable pressure regulator — are particularly useful in the medium-pressure range. When the main line pressure exceeds 6.0 bar but the downstream sprinklers require 4.0 bar, installing a pressure regulator downstream of the YT210 valve maintains consistent sprinkler operation while protecting the valve and downstream components from overpressure. The SNL-ADJ regulator provides adjustable output pressure from 1.0 to 5.0 bar, which gives the system designer flexibility to match the pressure to the specific sprinkler or emitter requirements in each zone.
High-Pressure Range: 7.0-10.0 Bar (0.7-1.0 MPa)
The high-pressure range applies to systems using long-distance main lines serving multiple zones, high-rise building irrigation systems where elevation creates static head pressure, and systems using high-pressure impact sprinklers that require 7.0-10.0 bar at the nozzle for proper trajectory and coverage radius. This pressure range represents the upper portion of the YT210's recommended operating window, and careful installation is necessary to prevent performance issues at the upper limit.
At 7.0-10.0 bar, the YT210 valve body and diaphragm assembly operate at the upper boundary of their design range. The valve opens and closes reliably at these pressures — the minimum opening pressure is well below 0.7 bar, so the higher pressure differential does not impair the diaphragm's operation. However, the risk of water hammer when the valve closes increases at higher pressures. At 8.0 bar, the sudden closure of a 2 inch YT210 handling 30 m³/h can generate a pressure surge of approximately 2.0-3.0 bar upstream of the valve, which may damage downstream sprinklers or pipe joints if the system is not properly designed with surge protection.
For high-pressure systems, we recommend selecting the YT210 model with the flow control feature — available on the 3/4 inch and larger sizes — and setting the flow control to limit the maximum flow through the valve to approximately 80 percent of the full open flow rate. This reduces the velocity of the water column at the moment of valve closure, minimizing the water hammer effect. Additionally, installing the SNL-ADJ pressure regulator downstream of the valve and setting it to 5.0-6.0 bar protects the downstream system from both the static line pressure and the dynamic pressure surges during valve cycling.
The mechanical solenoid version of the YT210 is a good fit for high-pressure applications where manual backup operation is required. If the AC or DC solenoid fails during a high-pressure cycle, the mechanical solenoid can be operated manually to open or close the valve, allowing the system to continue operating until the solenoid assembly is replaced. This redundancy is valuable in remote agricultural installations where a solenoid failure during the growing season could mean significant crop loss if the irrigation is interrupted for several days.
YT210 Sizing by Flow Requirements
Selecting the correct YT210 valve size for a given irrigation zone is a matter of matching the flow capacity to the zone's total flow demand. The valve should operate within the recommended flow range — between 20 percent and 80 percent of the maximum rated flow — to ensure reliable opening and closing, minimize pressure drop across the valve, and prevent cavitation damage at high flow velocities.
The 1/2 inch YT210 (DN15) is suitable for residential garden zones and small greenhouse sections with total flow demands up to 3 m³/h. Typical applications include single drip irrigation laterals serving 200-400 emitters at 2 L/h each, or a single Rotor Sprinkler zone with 4-6 sprinklers operating at 0.5-0.8 m³/h each.
The 3/4 inch and 1 inch YT210 models (DN20 and DN25) cover the most common commercial irrigation zone sizes. The 3/4 inch valve handles flow demands up to 12 m³/h, which covers a medium-sized sprinkler zone with 8-12 rotors or a drip irrigation zone covering 1,000-2,000 square meters. The 1 inch valve handles up to 22 m³/h, supporting large rotor zones with 15-20 sprinklers or drip zones covering 3,000-5,000 square meters.
The 1-1/2 inch and 2 inch YT210 models (DN40 and DN50) are used for main line control valves, large agricultural zones, and commercial turf areas. The 2 inch valve at full flow can supply an entire 18-hole golf course fairway system in a single zone, handling up to 33 m³/h with a pressure drop of approximately 0.3-0.5 bar across the valve at full open position. For these large valves, we recommend using the AC solenoid with a 24 VAC controller and installing the PRF-01 filter regulator upstream of the valve to protect the diaphragm assembly from debris that could cause incomplete closure at the high flow rates.
Three Application Scenarios with YT210 Configurations
To make the selection guide practical, here are three real irrigation scenarios with the recommended YT210 configuration for each.
Scenario 1 — Residential Drip Irrigation System. A 200 m² garden with 150 drip emitters supplied by a gravity-fed tank at 2.0 bar static pressure. The total flow demand is 0.6 m³/h. Recommended configuration: 1/2 inch YT210 with DC-latching solenoid (pulse), no flow control required, connected to battery-operated timer. The valve installed at the tank outlet with a mesh filter upstream. The DC-latching solenoid operates for the entire growing season on a single 9V battery.
Scenario 2 — Commercial Greenhouse Zone. A 1,500 m² greenhouse with 24 overhead sprinklers, each delivering 0.3 m³/h at 3.5 bar. Total flow demand: 7.2 m³/h. Recommended configuration: 1 inch YT210 with AC solenoid, flow control feature enabled and set to 8 m³/h maximum, with SNL-ADJ pressure regulator downstream set to 3.5 bar. The valve is controlled by a 24 VAC central irrigation controller with a master valve wired in series for flow and pressure consistency.
Scenario 3 — Agricultural Center Pivot End Gun. A 500 m end gun on a center pivot system requiring 15 m³/h at 8.0 bar. Recommended configuration: 1-1/2 inch YT210 with mechanical solenoid for manual backup, flow control set to 12 m³/h (80 percent of full open), with a pressure relief valve installed downstream of the regulator set to 6.0 bar. The mechanical solenoid is wired in parallel with the pivot controller, allowing both automatic operation and manual override. This configuration has been deployed successfully on farms in Zhejiang and Anhui provinces, with the YT210 valves operating reliably through three growing seasons without diaphragm or solenoid replacement.
For more details on the complete YT210 product range, visit the YT210 solenoid valve product page where full specification sheets and dimensional drawings are available for each valve size.
Frequently Asked Questions
What is the minimum pressure required to operate the YT210 solenoid valve?
Can the YT210 valve be used with dirty or unfiltered water?
How do I select between AC solenoid, DC-latching solenoid, and mechanical solenoid?
What is the flow rate of the YT210 2 inch valve at 5.0 bar?
Is the YT210 suitable for underground installation in valve boxes?
What thread standards are available for the YT210 valve connections?
INOVATO is a brand of Yuyao Sun-rainman Irrigation Equipment Factory, specializing in irrigation control components including solenoid valves, sprinklers, nozzles, dripline systems, and valve accessories. For pressure regulators, filters, and other accessories compatible with the YT210 series, explore the full range of valves and accessories available from INOVATO.