HG Type Hydraulic Check Valve

Ensure total control of your hydraulic system with the HG-type Check Valve. Designed for applications that require maximum reliability, this valve allows free flow in one direction and absolute blockage in the opposite direction, protecting your equipment against backflow and water hammer.

Description

HG Valve Highlights

High-Sealing Performance: Developed with precision seats that eliminate internal leakage.
High-Pressure Resistance: Supports nominal pressures of up to 400 bar, depending on the model, making it ideal for harsh industrial environments.
Compact and Robust Design: Hexagonal structure that facilitates installation with standard tools in horizontal or vertical piping.
Energy Efficiency: The internal design minimizes pressure drop, optimizing the system’s energy consumption.

Technical Specifications and Dimensions

Below, we present the detailed technical data for the precise selection of the ideal component for your project:

Legend: DN: Nominal Diameter; PN: Nominal Pressure; L: Total Length; D: Body Diameter; S: Hexagon Width; M: Thread Size; H: Thread Depth.

Cracking Pressure Options;

Beyond physical dimensions, the HG series allows for the selection of opening sensitivity according to the circuit’s needs:

0.5 bar: Ideal for free return with minimal resistance.
2.0 bar: Balance between retention and flow.
5.0 bar: Recommended for ensuring preload in specific systems.

Common Applications:

• Pumping systems and hydraulic power units.
• Accumulator protection.
• Industrial presses and heavy machinery.

Maximize your system’s durability and safety with an expert in high-pressure hydraulics.

Compact Line (High Pressure: 400 bar)

• HG-G1/4 (DN 6): The ideal solution for instrumentation and fine control systems. Supporting up to 400 bar of pressure, this compact valve ensures maximum safety in confined spaces without compromising sealing.
• HG-G3/8 (DN 10): The perfect balance between size and performance. Designed for flow rates of up to 40 L/min, it is widely used in pilot circuits and auxiliary systems that operate under high pressure of 400 bar.

Intermediate Line (Medium/High Pressure: 350 bar)

• HG-G1/2 (DN 12): One of the most versatile valves in the line. With a robust 30mm (hexagonal) body, it supports 350 bar and is the standard choice for industrial hydraulic units that require constant and safe flow.
• HG-G3/4 (DN 16): Developed for systems that require greater fluid passage without loss of efficiency. Its 90mm length construction ensures durability in continuous operating cycles at 350 bar.
• HG-G1 (DN 20): Designed for high flow rates in main systems. With support for 350 bar, this valve combines a 46mm (hexagonal) structure with optimized internal passages to reduce fluid heating.

• Large-Scale Industrial Line (250 bar)

• HG-G1 1/4 (DN 25): Ideal for high-capacity filtration and return systems. Supports operations up to 250 bar, offering a secure 1 1/4″ connection for applications that move large volumes of oil.
• HG-G1 1/2 (DN 30): Extreme robustness for the heavy sector. With a body diameter of 64.5mm, this 250 bar valve is essential in presses and mining machinery where retention failure is not an option.
• HG-G2 (DN 40): The largest model in the HG series, at 160mm in length. Perfect for large-scale hydraulic systems, it ensures full free flow and instantaneous blockage in 2-inch piping under 250 bar pressure.

Table: Model vs. Recommended Maximum Flow