China 4.5″ 160 PSI Common Rail Pressure Gauge – Solid Front Phenolic Case Suppliers, Factories

The pressure gauge is a precision mechanical instrument designed for the accurate measurement and local indication of fluid or gas pressure in industrial, commercial, and process applications. Constructed with robust materials such as stainless steel or brass, it ensures long-term reliability under demanding operating conditions, including high vibration, temperature fluctuations, and corrosive environments. Featuring a Bourdon tube sensing element, the gauge converts pressure into mechanical displacement, which is then displayed via a calibrated dial and pointer.

Available in various dial sizes, pressure ranges, and connection types, this pressure gauge supports customization to meet diverse system requirements. It is widely used in sectors such as oil & gas, chemical processing, water treatment, HVAC, power generation, and manufacturing. Optional features include glycerin or silicone fluid filling for damping, overpressure protection, adjustable zero mechanisms, and compliance with international standards (e.g., EN 837, ASME B40.100).

Designed for easy installation and maintenance, the pressure gauge provides stable performance, excellent readability, and extended service life, making it an essential component for safe and efficient system monitoring.

Product Description

Product Specifications

Case Phenolic
Size 100mm (4")
Ring(Cover) Phenolic
Window Glass
Pointer Aluminum Alloy, Black Finished
Connection Stainless steel
Connection Location Lower
Thread 1/8", 1/4", 3/8", 1/2"; PT(BSPT,ZG), BSP(G,PF), NPT etc.
Element(Bourdon Tube) Stainless steel
Movement Stainless steel
Dial Plate White Aluminum with Black Graduations

Core Features & Advantages

Durable Structure & Protection

The case is crafted from premium Phenolic material with rust-proof treatment, perfectly suited for damp, dusty, and mildly chemically corrosive environments. Optional chrome plating enhances appearance and protective capabilities, while impact-resistant glass or polycarbonate (PC) lenses guard against mechanical shocks.

High Readability & Precision

A white aluminum dial with crisp black graduations provides maximum visual clarity, even in poor light or from distance. The lightweight black aluminum alloy pointer resists vibration for drift-free indication. High-precision stainless steel movement and Bourdon tube guarantee long-term measurement consistency.

Flexible Installation

Supports versatile mounting setups (bottom inlet, middle rear inlet, bottom rear inlet) to easily integrate into diverse fluid system layouts. Connection threads fit multiple standards, including 1/8", 1/4", 3/8", 1/2" as well as PT (BSPT/ZG), BSP (G/PF), and NPT options.

Broad Size Range

Available in seven standard dial dimensions from 40mm (1.5") up to 200mm (8"). Designed for seamless integration into compact internal machine panels, large central units, or remote monitoring control dashboards.

Typical Application Fields

Industrial Hydraulic & Pneumatic Systems
Compressors, Pumps & Pipeline Monitoring
Water Supply, Heating & HVAC Systems
Energy, Chemical & Manufacturing Processes
Firefighting Equipment & Safety Systems

Frequently Asked Questions (FAQ)

What housing material is used for this pressure gauge?

The gauge case and cover ring are made from high-strength Phenolic material featuring rust-proof treatment, designed to withstand damp, dusty, and mildly corrosive industrial environments.

What thread types and connection sizes are compatible?

This gauge supports connection thread sizes including 1/8", 1/4", 3/8", and 1/2". Thread standard options include PT (BSPT/ZG), BSP (G/PF), and NPT to fit various system requirements.

What materials are used in the internal sensing mechanism?

The inner movement, connection, and Bourdon tube element are constructed from high-grade stainless steel, offering precise mechanical response and resistance to wear and corrosion.

What dial sizes are available for selection?

While the standard size listed here is 100mm (4"), the product series covers seven different dial sizes ranging from 40mm (1.5") up to 200mm (8") for various installations.

How readable is the dial in low light or harsh conditions?

The gauge features a white aluminum background with sharp black graduations and a lightweight black aluminum pointer, ensuring high-contrast data visibility and minimal needle oscillation.

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