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QDYLZ100 Stainless Steel Mechanical Pressure Gauge for Industrial Pipelines

A stainless steel mechanical pressure gauge delivering simple, power-free, EMI-immune local pressure indication, with optional liquid-filled damping for vibrating environments.
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QDYLZ100 Stainless Steel Mechanical Pressure Gauge

QDYLZ100 mechanical Bourdon tube pressure gauge for local monitoring without external power or signal wiring

Pressure Monitoring Without External Power

QDYLZ100 uses a purely mechanical Bourdon tube and gear movement to provide direct on-site pressure indication without external power, signal wiring or electronic components. Its power-free design also eliminates reading drift caused by electromagnetic interference around motors and variable-frequency drives.

QDYLZ100 industrial pressure gauge with 304 stainless steel case and stainless steel wetted path

All-Stainless Steel for Industrial Durability

QDYLZ100 combines a 304 stainless steel case with a stainless steel pressure path for durable industrial pressure monitoring. The structure supports 120% F.S. continuous overload and 150% F.S. short-duration pressure spikes, while the Bourdon tube is rated for at least 100,000 full-pressure cycles.

QDYLZ100 100mm radial pressure gauge with G1/2 M20x1.5 and NPT1/2 process connection options

Flexible Installation for Industrial Pipelines

The standard 100mm industrial gauge uses radial bottom mounting with a G1/2 process connection. M20×1.5 and NPT1/2 connections and an axial back-mount configuration are also available, allowing the gauge to adapt to different equipment and pipeline layouts.

Working Principle Diagram

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Technical Specifications

Temperature Error Coefficient:≤±0.04% F.S./℃ (deviation from 20℃ reference temperature)


Hysteresis Error:≤0.5% F.S.


Repeatability Error:≤0.3% F.S.


Pointer Stability:Anti-vibration gear movement; dry version with inherent damping, no pointer flutter under normal pipeline vibration


Safe Continuous Overload:120% of full scale; no permanent zero shift or structural deformation


Transient Overload Tolerance:150% of full scale; no damage from short-duration pressure spikes and water hammer


Bourdon Tube Burst Pressure:≥300% of full scale


Bourdon Tube Fatigue Life:≥100,000 full pressure cycles; no leakage or calibration drift under cyclic load


Zero Recovery Performance:≤0.2% F.S. zero offset after full-scale overload release


Movement Backlash:Minimized gear backlash for smooth, steady pointer travel

Dimension Chart

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Phone: +86-19715617532
Add: Building 14, University Science and Technology Park, Fenghuangshan Economic Development Zone, Xiangshan District, Huaibei City, Anhui Province

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