Irritrol (Richdel) 205MT 25mm Solenoid Valve with Flow Control

The Irritrol (Richdel) 205MT Series 25mm Solenoid Valve with Flow Control is the enhanced version of the long-standing 204MT, offering all the durability and high-flow performance of the base model with the added convenience of integrated flow control. Designed for residential and light-commercial irrigation, this rugged screw-top valve handles lightly contaminated or dirty water with ease thanks to its debris-tolerant internal design—making it a popular choice for bore, tank, and reticulation systems exposed to particles.

Featuring an interlocking bonnet and diaphragm assembly, the 205MT delivers improved pressure balance and reliable sealing under demanding conditions. The manual external bleed allows quick flushing and testing during installation without activating the irrigation controller, and the encapsulated 24VAC solenoid ensures consistent performance even in harsh valve-box environments. Its heavy-duty PVC construction and nylon-reinforced Buna-N diaphragm provide long service life and resistance to wear, chemicals and UV exposure.

With its built-in flow control, the 205MT gives installers the flexibility to fine-tune zone performance, reduce misting, manually throttle back flow, or completely shut off an individual valve—something not possible with the standard 204MT model. Serviceability is simple, as the screw-top bonnet allows full access without removing the valve from the pipework. For those seeking a strong, field-proven 25mm valve with maximum control, the 205MT remains an outstanding option.

FEATURES

• Screw-top 25mm solenoid valve with integrated flow control
• High-flow, low-friction-loss internal design
• Rugged nylon-reinforced Buna-N diaphragm for long-term sealing performance
• Improved bonnet design interlocks with diaphragm & body
• Debris-tolerant design suitable for lightly contaminated bore or tank water
• Manual external bleed for flushing and zone testing
• Heavy-duty, UV-resistant and corrosion-resistant PVC body
• Encapsulated 24VAC solenoid for reliability
• Tamper-resistant flow-control handle
• Easily serviced without removing valve from the pipework
• Ideal upgrade over the standard 204MT valve when additional control is required

SPECIFICATIONS

• Hydraulic
  • Flow Range: 1–100 L/min
  • Pressure Range: 70–1034 kPa
• Electrical
  • Voltage: 24 VAC
  • Inrush: 9.6 VA / 0.4 A
  • Holding: 4.8 VA / 0.2 A
  • Optional: 9–12V DC latching solenoid (DCL)
• Dimensions (205MT – L × W × H)
  • 130 × 70 × 130 mm
• Construction
  • Body: UV-resistant PVC
  • Bonnet: Screw-top reinforced PVC
  • Diaphragm: Nylon-reinforced Buna-N
  • Valve Seat: Buna-N
  • Hardware: Stainless steel