ZAES shock absorbers stand out from other solutions on the market thanks to their stability and reliability

A technical analysis reveals why ZAES pressure gauge shock absorbers outperform other traditional solutions on the market

In any industrial installation where pulsations, vibrations or water hammer occur, the stability of pressure gauges depends to a large extent on the quality of the pressure damper fitted. Although it is a small and seemingly simple component, its internal design determines the instrument’s service life and the accuracy of the measurement.

A recent comparative analysis carried out by ZAES —based on field trials and data provided by customers— confirms that its shock absorbers for pressure gauges They offer superior performance to many standard models on the market, including generic shock absorbers and versions from less specialised manufacturers.

This article provides an in-depth explanation of the technical reasons which put ZAES shock absorbers a step ahead, and how this advantage translates into greater reliability and cost savings for industrial plants.

Common problems with off-the-shelf shock absorbers

Before examining the benefits of ZAES shock absorbers, it is worth understanding why many shock absorbers available on the market fail o do not deliver the expected performance.

The most common problems encountered with generic shock absorbers are:

1. Inconsistent restriction orifices

Many cheap shock absorbers have poorly machined holes, which causes:

• irregular filtration,
• premature blockages,
• or not provide sufficient cushioning.

2. Poor-quality materials

The use of low-strength steels leads to corrosion or accelerated wear.

3. Poor thread compatibility

Tolerances that are too wide, leading to leaks or poor connections.

4. Loss of cushioning over time

In some models, the restrictor element is damaged by severe pulsations.

5. Lack of specific models for contaminated fluids

Many shock absorbers are not designed for use with particulates or viscous oils.

6. Low resistance to violent water hammer

Some solutions fail at the first sign of a severe event.

How do ZAES shock absorbers overcome these problems?

ZAES has developed a range of shock absorbers based on engineering criteria, field trials and experience in sectors where pulsations are common. These devices are designed to provide even damping, extreme durability y long service life.

Key technical advantages of ZAES shock absorbers

1. Precision machining of the constriction

Each ZAES shock absorber incorporates a bore calibrated to minimal tolerances.
This ensures:

• consistent damping,
• stable response to pressure,
• A smooth reading on the pressure gauge, without any fluctuations.

Unlike generic solutions, filtering is gradual and steady.

2. High-strength industrial materials

ZAES manufactures its shock absorbers in:

• high-strength carbon steel for standard hydraulics and processes,
• stainless steel AISI 316 for steam, gas, chemical and corrosive atmospheres.

This ensures stable performance even in extreme conditions.

3. International compatibility with BSP and NPT threads

Unlike some manufacturers who only offer one type of thread, ZAES offers:

• thread BSP (G) for Europe,
• thread NPT for the American markets.

This avoids the need for adaptors, leaks and incorrect assembly.

4. Models specifically designed for clean, viscous or contaminated fluids

ZAES is one of the few manufacturers to offer specialised shock absorbers for:

• Clean fluids

(calibrated orifice damper)

• Fluids containing particles or dirt

(sintered or porous mesh damper)

• Viscous fluids

(enlarged calibrated orifice)

This ensures optimum cushioning in any process.

5. High resistance to extreme water hammer

The reinforced ZAES models have been tested in real-world applications with:

• alternative pumps,
• industrial hydraulic presses,
• piston compressors,
• quick-closing valves.

In these tests, ZAES shock absorbers have proven capable of withstanding transient pressures that other models could not withstand.

6. Up to 6 times longer service life

Tests show that ZAES shock absorbers extend the service life of the pressure gauge by 3 to 6 times, depending on the process.

This is because:

• less stress on the Bourdon tube,
• thermal stability,
• reduction of vibrations transmitted to the instrument.

Technical comparison: ZAES vs generic shock absorbers

The technical difference is clear: ZAES outperforms generic alternatives in every critical parameter.

Sectors that benefit most from ZAES shock absorbers

ZAES shock absorbers are particularly recommended for:

• Industrial hydraulics

Systems with intense pulsations.

• Compressed air and compressors

They eliminate violent oscillations.

• Steam and industrial heat

Used in combination with ZAES siphons.

• Chemical and petrochemical industry

Corrosive and demanding processes.

• Power stations

Systems with high pressure fluctuations.

• Food and beverages

CIP/SIP processes where stability is key.

ZAES compared with leading international manufacturers

ZAES competes directly with well-known manufacturers such as:

• Wika
• Ashcroft
• Badotherm
• Winters Instruments

And it does so by offering:

• more competitive prices,
• immediate availability,
• personalised technical support,
• local stock,
• global compatibility,
• world-class industrial resilience.

ZAES positions itself as a high-quality European alternative capable of competing even with premium brands in the sector.

In a nutshell: why ZAES shock absorbers make all the difference

The performance of ZAES shock absorbers is no coincidence:
It is the result of careful engineering, the selection of high-quality materials and an optimised design.

Its benefits for the industry include:

• More stable readings
• Fewer faults with pressure gauges
• Savings on spare parts
• Reduced maintenance
• Increased security
• Universal compatibility
• Exceptional durability

For all these reasons, ZAES pressure gauge shock absorbers have become a market benchmark and one of the solutions most highly recommended by industry professionals.