AquaMatic K534-X2A1-54000 – 1 1/2 Inch Normally Open, LS, PI, SAO – BUNA/FKM/FKM

The AqMatic K534-X2A1-54000 is a 1-1/2 inch normally open thermoplastic diaphragm valve with limit stop (LS), position indicator (PI), and spring assist open (SAO), designed for systems that require adjustable flow control and visual confirmation of valve position.

This model is part of the K53 series, a glass-filled thermoplastic diaphragm valve platform engineered for corrosion-resistant operation in water treatment, filtration, and chemical systems.

The valve is configured as normally open, allowing flow under standard conditions, with closure achieved through control pressure. The limit stop (LS) enables mechanical restriction of valve travel for flow tuning, while the position indicator (PI) provides a clear visual reference of valve position during operation or maintenance.

The spring assist open (SAO) feature improves return-to-open response when control pressure is removed, helping maintain consistent cycle timing in automated systems. This is particularly useful in applications where repeatable valve performance is critical.

This configuration uses a Buna diaphragm with FKM seals and discs, supporting compatibility across standard water treatment applications and more demanding chemical environments.

The valve is commonly used in automated systems with stagers and stager controls, or alongside other diaphragm valves such as V42 diaphragm valves depending on system design.