WIKA 432.50/433.50 Premium Diaphragm Pressure Gauge Reliable & Durable

WIKA 432.50/433.50 Premium Diaphragm Pressure Gauge Reliable & Durable
The WIKA 432.50 is a heavy-duty stainless steel diaphragm pressure gauge designed specifically for the process industry, with excellent overpressure protection and corrosion resistance. Very suitable for low-pressure, viscous or corrosive media.
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Product Description

Product Introduction

Diaphragm pressure gauges are best used in the low-pressure range. By using the large working surface of the circular  corrugated diaphragm element, it is possible to reliably measure small pressure ranges.

The  432.50  diaphragm pressure gauge is manufactured according to the EN 837-3 standard. High quality design is particularly  suitable for applications in the chemical and petrochemical industry, oil and gas industry, and power engineering.

The shell and stainless steel wet parts meet the high requirements for corrosion-resistant media. For particularly  high resistance requirements, the pressure chamber of this diaphragm pressure gauge can be designed with various  special materials, such as PTFE, tantalum, or Hastelloy.


Key Features

  1. High overpressure resistance: diaphragm supports against flange, withstands 5–10× overload.

  2. Superior corrosion resistance: full stainless steel; special materials for harsh chemicals.

  3. Clog-free measurement: open flange design ideal for viscous, crystallizing, dirty media.

  4. Reliable low-pressure performance: large diaphragm area ensures stable, accurate readings.

  5. Industrial durability: shock & vibration resistant; suitable for chemical, petrochemical, oil & gas, power      plants.


Special features

  1. Case and wetted parts from stainless steel.

  2. Wide choice of special materials.

  3. Process connection thread or open flange.

  4. Scale ranges from 0 … 16 mbar.

  5. QR code on dial links to instrument-specific information.



Construction & Materials

  1. Case: Stainless steel 1.4301 (304).

  2. Wetted parts: Stainless steel 1.4571 (316Ti) / 316L.

  3. Diaphragm: Corrugated stainless steel; optional PTFE, Hastelloy, Tantalum for extreme corrosion.

  4. Process connection:Threaded: G ½ B male;Open flange: prevents clogging, easy cleaning (for dirty/viscous      media);



Applications

  1. For measuring locations with increased overload.

  2. With liquid-filled case suitability for high dynamic pressure loads and vibrations (models 433.50, 433.30).

  3. For gaseous, liquid and aggressive media, also in aggressive environments.

  4. With open connecting flange also suitable for contaminated and viscous media.

  5. Process industry: Chemical industry, petrochemical industry, oil and gas, power generation, water and wastewater      technology, machine building and general plant construction.



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Products Recommended

Pressure Transmitters for Industrial Pressure Measurement

Xinyi Instrument supplies pressure transmitters for process control, hydraulic systems, petrochemical plants, water treatment, HVAC, power generation and general industrial pressure monitoring. Our pressure transmitter range covers gauge pressure, absolute pressure, differential pressure, high temperature media and digital communication applications.

Choose from compact pressure transmitters, smart 3051 differential pressure transmitters, diaphragm seal models, RS485 digital pressure transmitters and high frequency dynamic pressure sensors. Standard outputs include 4-20 mA, voltage output, HART and RS485 Modbus options, with stainless steel wetted parts and custom process connections available on request.

Pressure Transmitter Parameters

Pressure Types Gauge, absolute, negative pressure, differential pressure
Measuring Range From low differential pressure to high pressure ranges up to 100 MPa, depending on model
Output Signals 4-20 mA, 0-5 V, 1-5 V, 0-10 V, RS485 Modbus, HART options
Accuracy Typical options include 0.1%, 0.2%, 0.25% and 0.5% FS
Process Connection M20 x 1.5, G1/4, G1/2, NPT and customized thread connections
Wetted Materials Stainless steel, 316L diaphragm and corrosion-resistant sealing options
Media Water, oil, gas, air, steam and compatible liquid or gas media
Applications Pipeline pressure, tank level, flow differential pressure, hydraulic pressure and automation systems

Recommended Pressure Transmitter Series

  • Xinyi YW-150 - differential pressure transmitter for stable industrial measurement.
  • Xinyi YW-3051DP - smart differential pressure transmitter for process control.
  • Xinyi YW-130 / YW-140 - compact pressure transmitters for general pressure monitoring.
  • RS485 Digital Pressure Transmitter - Modbus communication for remote monitoring systems.
  • High Temperature Pressure Transmitter - designed for hot media and demanding process conditions.
  • Siemens, Yokogawa and ABB Options - international brand transmitters available for project matching.

Pressure Transmitter FAQ

What is a pressure transmitter used for?

A pressure transmitter converts the pressure of liquid, gas or steam into a standard electrical signal for PLC, DCS, recorder or control instrument input. It is widely used for pipeline pressure, tank level, flow measurement and process safety monitoring.

How do I choose the right pressure transmitter?

Confirm the pressure range, pressure type, medium, temperature, output signal, accuracy, installation thread, electrical connection and environmental requirements. For corrosive media, high temperature or sanitary applications, diaphragm material and sealing structure are especially important.

What is the difference between gauge, absolute and differential pressure transmitters?

Gauge pressure transmitters measure pressure relative to atmospheric pressure. Absolute pressure transmitters measure pressure relative to vacuum. Differential pressure transmitters measure the pressure difference between two points and are commonly used for flow, filter and level measurement.

Can Xinyi Instrument provide customized pressure transmitters?

Yes. Xinyi Instrument can support customized pressure ranges, process connections, output signals, cable length, display options and model selection for different industrial applications.