Our Pressure Sustaining Valve solves a problem that's easy to overlook until it causes damage pressure dropping below the level a drip or sprinkler system needs to function properly. By maintaining a minimum critical upstream pressure, it prevents lines from emptying and protects downstream components like drippers, filters, and fittings from inconsistent flow. Hydraulically operated and diaphragm actuated, it responds smoothly with minimal effort, while a unitized Flexible Super Travel diaphragm and guided plug design keep pressure regulation consistent over years of use. Low opening and actuation pressure reduces the energy needed to operate the valve, and durable engineering plastic construction stands up to repeated use and harsh field conditions. Well suited to drip, sprinkler, and fertigation systems, it also supports infield filter and backwash pressure sustaining.
What makes it stand out?
Maintains minimum critical upstream pressure
Hydraulically operated, diaphragm actuated
High flow capacity
FST diaphragm and guided plug design
Low opening/actuation pressure, energy efficient
Sizes 2"–3", max pressure 10 kg/cm²
Key Features
Hydraulic Operation
Diaphragm Actuation
High Flow Capacity
Pressure Sustaining
FST Diaphragm
Low Actuation Pressure
Energy Efficient
Durable Construction
Easy Inline Servicing
Line Emptying Prevention
Component Protection
Related Products
Complementary systems for seamless integration and lasting performance.
