MVR Expansion Joint / Bellows Compensator for MVR Evaporators

MVR Expansion Joint / Bellows Compensator for MVR Evaporators

Corrosion-resistant, vacuum-rated MVR expansion joints for evaporators—absorbing thermal displacement and isolating compressor vibration.

MVR Expansion Joint & Bellows Compensator

Reliable displacement compensation, vibration isolation and corrosion resistance for MVR evaporator systems.

MVR (Mechanical Vapor Recompression) evaporators operate under demanding conditions—vacuum, elevated steam temperatures, corrosive media and continuous compressor vibration. Our MVR expansion joints and bellows compensators are engineered specifically for these operating conditions, protecting piping, compressors and heat exchangers from thermal displacement, vibration and misalignment.

Where Our MVR Expansion Joints Are Used

Compressor inlet/outlet piping – vibration isolation and thermal movement absorption
Secondary steam piping – thermal compensation for high-temperature vapor lines
Heater / evaporator shell connections – compensating relative movement between equipment and piping
Condensate & non-condensable gas lines – thermal displacement compensation
Circulation pump connections – vibration damping and installation tolerance
Inter-stage / multi-effect connecting piping – absorbing relative displacement between vessels

Key Features

Vacuum-rated design – external pressure stability checked for vacuum service
Corrosion-resistant materials – 316L, duplex stainless steel, titanium, Hastelloy available for high-chloride and aggressive media
Vibration damping – dedicated anti-vibration designs for compressor connections
High fatigue life – designed for continuous MVR operation (≥1000 cycles, project-specific)
Multiple configurations – axial, universal, hinged, and double (tied) designs
Custom displacement – axial, lateral and angular movement tailored to your piping layout

Technical Specifications

Parameter	Range / Options
Nominal Diameter (DN)	DN50 – DN2000 (larger on request)
Design Pressure	Vacuum to 2.5 MPa (higher on request)
Design Temperature	up to 350 °C (material dependent)
Bellows Material	304, 316L, duplex 2205, titanium, Hastelloy C-276
Flange Standard	ANSI, DIN, JIS, EN, GB (on request)
Movement Types	Axial, lateral, angular, combined
Fatigue Life	≥1000 cycles (application-dependent)
Connection	Flanged / welded

Note: Final parameters are confirmed per project. Provide your DN, pressure, temperature, medium (Cl⁻ content) and required displacement for a tailored solution.

Material Selection Guide

Medium / Condition	Recommended Material
Low-chloride, general service	304 / 316L
High chloride, moderate corrosion	Duplex 2205
Strongly corrosive, high Cl⁻	Titanium
Severe acid/corrosion	Hastelloy C-276

Why Choose Forobellows

Manufacturer with in-house bellows forming and testing
Experience with MVR, evaporation and crystallization systems
Vacuum stability and corrosion engineering support
Custom design, drawings and third-party inspection available
Fast quotation and short lead times

Request a Quote

Tell us your DN, design pressure (including vacuum), temperature, medium (Cl⁻ content), required axial/lateral/angular displacement and installation position, and our engineers will recommend the right MVR expansion joint and send a quotation.

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