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HYDRAULIC SHOCK ABSORBER UNITS – TYPE HSAU

HYDRAULIC DAMPING UNIT – TYPE HSAU

Only hydraulic damping in the closing direction

Design solutions of hydraulic shock absorber units type HSAU with features.

Shock absorbers with two or three damping stages with adjustable damping characteristic.

Complete hydraulic damping unit included shock absorber, housing and attachment flange can be located on the one side or on both sides as a tandem application.

Closing spring to initiate disc closing acceleration at the start of flow transient.

Additional torque in closing direction with lever and weight which is the most often used practice or only accumulator.

Installation on check valves, in any position or pipeline angle.

HSAU.EXT

HSAU.RET

IMPORTANT

There are possible enormous flow losses in this solution which is equivalent to financial losses. The flow losses are caused as a consequence by both disc/flap weight and the extra weight of lever with ballast. For this solution please see HYDROMAT’s automatized hydraulic shock absorber units .

SYSTEM DESIGN FOR HIGH PERFORMANCE OF DAMPING TORQUE CONTROL

Classical solution

This is a classical solution for pump protection. This solution includes a check valve, butterfly tilting or swing check type , equipped with hydraulic damping unit TYPE HSAU and gate or butterfly valves for isolation of the water flow.

Quick and easy “Plug and play” installation on different types of check valves

Mounting system based on iso 5211 flanges

Features of HSAU damping unit:

Innovative and most reliable heavy duty concept

High speed closing of check valves by damping torque transfer without additional bending of valve shafts or additional loading of check valves, such as bearing or similar.

Universality of application, quick and easy installation. The system is based on ISO 5211 , it can be connected directly or by using an intermediate flange.

Two or three hydraulic adjustable damping stages.

Safety system to control torque for protection of damping units and check valves.

Wide range of different damping and control solution based on hydraulic shock absorber design with differential and equal piston area

Wide range of damping torques, 8 standard sizes, applicable to damping torques from 500 to 275.00 NM/damping unit

Selection of damping units according to the conditions of water hammer and back pressure, not according to the size of check vavles.

In tandem execution ( both sides assembly, there is no need for interconnecting shock absorbers through special flexible pipes ).

Simple harmonization with specific customer equirements.

Simple interchangeability of all parts means simple maintenance and long service life even in harshest conditions.

Considering all of the specified factors, HYDROMAT’s damping units are the most competetive ones in terms of price.

Depending on design, they can be mounted on a pipeline in any position or angle.

If you have any questions regarding our products and solutions , feel free to contact us for more info.