WIKA 233.50 Bourdon Tube Pressure Gauge

Overview

WIKA 233.50 is a stainless steel Bourdon tube pressure gauge engineered specifically for the process industry, combining a fully stainless steel construction with a liquid-filled case suited to applications with high dynamic pressure loads or vibration. Manufactured and qualified in accordance with EN 837-1 and ASME B40.100, the WIKA 233.50 delivers scale ranges from 0 to 0.6 bar up to 0 to 1,600 bar (0 to 20,000 psi), covering the wide variety of measuring ranges required across chemical, petrochemical, and general process engineering applications.

As the official authorized partner and exclusive regional representative for WIKA, Seven Star LLC proudly supplies the WIKA 233.50 Bourdon tube pressure gauge to industrial, oil and gas, and process customers across Oman and the wider GCC. Every gauge shipped through Seven Star LLC is genuine WIKA product with full manufacturer warranty and access to local technical support – ensuring facility engineers and procurement teams in Muscat, Sohar, and Salalah receive an authentic, factory-certified WIKA 233.50 backed by regional service.

Working Principle

The WIKA 233.50 operates on the Bourdon tube measuring principle: process pressure enters a curved, sealed metal tube that tends to straighten in proportion to the applied pressure, and this mechanical deflection is transmitted through a movement to a pointer that indicates pressure directly on a graduated dial. Because the sensing element is purely mechanical, the WIKA 233.50 requires no auxiliary power to provide a reliable local pressure reading, making it a straightforward, fail-safe indicator wherever electronic transmission is not required.

The liquid-filled case of the model 233.50 dampens needle flutter and mechanical wear caused by pulsating pressure or ambient vibration, extending gauge life and improving reading stability in demanding rotating-equipment or pulsating-flow environments compared with a standard dry-case gauge. As a safety function, the instrument incorporates a blow-out device with a blow-out plug on the back of the case, allowing overpressure to safely vent in the event of a Bourdon tube failure rather than releasing pressure toward the operator reading the dial.

Engineering Design of the WIKA 233.50

The WIKA 233.50 is constructed entirely in stainless steel, including the Bourdon tube and case, making it suitable for liquid and gaseous media in aggressive and corrosive environments as long as the media is not highly viscous or crystallizing. The gauge is available in nominal sizes of 63 mm (2½ in.), 100 mm (4 in.), and 160 mm (6 in.), with accuracy class 1.6 for the NS 63 size and class 1.0 for the NS 100 and NS 160 sizes, and process connections including lower mount (LM), center back mount (CBM), and lower back mount (LBM) configurations to suit different panel and pipe layouts.

Operating temperature limits reach up to +200°C (+392°F) for the medium in dry configurations and up to +100°C (+212°F) for liquid-filled versions, with ambient temperature ranges extending down to -40°C (-40°F) depending on fill type. The WIKA 233.50 carries German Lloyd and Gosstandart approvals and demonstrates excellent load-cycle stability and shock resistance, a combination that has made the 232.50/233.50 series a bestselling reference gauge across WIKA’s stainless steel pressure gauge range.

Key Features

The WIKA 233.50 combines all-stainless-steel durability with vibration resistance and wide-range measurement capability that make it a standard choice for process industry pressure indication.

• Liquid-filled case dampens pointer flutter and mechanical wear from vibration and pulsating pressure.
• Fully stainless steel construction resists corrosion in aggressive chemical and petrochemical environments.
• Scale ranges from 0 to 0.6 bar up to 0 to 1,600 bar (0 to 20,000 psi) cover a broad range of process applications.
• A rear blow-out device safely vents overpressure in the event of Bourdon tube failure, protecting the operator.
• Manufactured and qualified to EN 837-1 and ASME B40.100 for internationally recognized quality assurance.
• Available in 63, 100, and 160 mm nominal case sizes with multiple mounting configurations.
• Excellent load-cycle stability and shock resistance suit rotating equipment and pulsating flow applications.
• German Lloyd and Gosstandart approvals support use in marine and additional regulated markets.

Industrial Applications

The WIKA 233.50 is deployed across chemical and petrochemical processing, power generation, mining, onshore and offshore oil and gas, environmental technology, and general plant construction wherever a rugged, vibration-resistant pressure gauge is required for local indication. Typical duties include pump and compressor discharge monitoring, pipeline pressure verification, and process vessel pressure indication in environments with significant mechanical vibration.

As the officially authorized partner for WIKA, Seven Star LLC distributes the WIKA 233.50 to refineries, petrochemical complexes, and industrial facilities throughout Oman and the GCC. The gauge is a strong fit for pump stations and rotating equipment across the Sohar and Salalah industrial zones, as well as for oil and gas and power generation facilities across Muscat that require dependable, vibration-resistant local pressure indication.

Technical Specifications

The table below summarizes the core specifications of the WIKA 233.50 Bourdon tube pressure gauge as supplied by Seven Star LLC.

Call To Action

Seven Star LLC supports the full procurement cycle for the WIKA 233.50 Bourdon tube pressure gauge, from formal RFQ submission to regional warehouse stock availability, technical datasheet delivery, and direct consultation with our instrumentation division on scale range, mounting configuration, and fill type selection for your application. As the authorized partner for WIKA in Oman and the GCC, we ensure every WIKA 233.50 pressure gauge is delivered with full manufacturer warranty and dependable local technical support. Contact Seven Star LLC today to request a quotation or discuss your pressure measurement requirements.