0781-1415 - Victor SR4PF-250 Panel Mount Piston Regulator, 50-750 PSIG

Precision High-Pressure Control

The Victor SR4PF-250 High Pressure Regulator (SKU: 0781-1415) is a specialized instrument engineered for demanding industrial applications requiring precise pressure control up to 750 PSIG. Part of the distinguished SR 4 series, this model distinguishes itself with a piston actuation mechanism. Unlike diaphragm regulators, piston-style regulators are inherently more robust against high-pressure surges and are preferred for applications involving frequent cycling or dead-end service. This makes the SR4PF-250 an exceptional choice for pressure vessel testing, proof testing, and other high-pressure static applications.

Robust Construction & Materials

Durability is at the core of the SR4PF-250's design. The body and housing cap are constructed from machined brass, providing substantial resistance to physical wear and corrosion. Internally, the regulator features a cartridge-type seat assembly utilizing a PCTFE (Polychlorotrifluoroethylene) seat. PCTFE is selected for its high compressive strength and minimal deformation under load, ensuring a reliable, leak-tight seal even at elevated pressures. A sintered bronze inlet filter is integrated to trap particulates, protecting the precision-machined piston and seat from debris that could compromise performance.

Panel Mount Configuration

Designed for system integration, this regulator is configured for panel mounting rather than direct cylinder attachment. It features a 1/4-inch Female NPT inlet connection, allowing it to be plumbed directly into manifolds, test benches, or high-pressure supply lines. The outlet is equipped with a premium 1/4-inch Swagelok stainless steel connection, facilitating secure and reliable attachment to tubing systems. Large 2.5-inch brass gauges provide clear visual confirmation of system pressures, while an external adjustable relief valve adds a critical layer of safety by preventing over-pressurization of downstream components.