DESCRIPTION
The Sondex S21 plate is a straight replacement heat transfer plate for Sondex plate heat exchangers — specifically the S21, S21 IG, S21A and S21A IG10 models. If your unit is due for a plate replacement or you’re refurbishing an older system, these are built to the same dimensions as the originals and go in without any modification.
Material options are stainless steel and titanium. Stainless covers most standard water and glycol applications. Titanium is worth specifying if you’re dealing with seawater, chlorinated water or anything with a corrosion risk that standard grades don’t handle well — marine and coastal installations being the obvious cases.
At SENOVIS PHE, we supply these as aftermarket replacements for maintenance, repair and refurbishment work across HVAC, refrigeration, food processing, marine, district heating and industrial process cooling. The S21 series turns up across a fairly wide range of setups.
One thing worth noting on compatibility — our S21 plates also fit a broader range of Sondex models beyond just the S21 variants. If you’re running S19A, S20A, S22, S31A, S37, S38 or S41A units on the same site, there’s a reasonable chance the same plate covers more than one frame, which simplifies stock management.
If you have a unit reference or existing plate markings, send them over and we’ll confirm the right spec before you order.
Sondex S21 Plate heat exchanger specification
Vicarb PHE Plate Heat Exchanger Replacemnet | Sondex S21 |
| Corrugation Depth(mm) | 2.6 |
| Port Diameter(mm) | φ100 |
| Chevron Angle | 135°55° |
| Corrugation Pitch(mm) | 8.5/9.0 |
| Equivalent Diameter | 5.2 |
| Flow Area(m²) | 0.00088 |
| One Plate (m²) | 0.21 |
| Port Distance (mm) | 719*225 |
| Dimensions (mm) | 871*380 |
Actual Product Details
Specially designed corrugation pattern improves heat transfer performance.Precision fluid distribution for optimized exchanger performance.
Precision-pressed stainless steel plate for long-term durability.Suitable for HVAC/Marine/Food /oil and gas Applications
HVAC Systems
Used in chillers, heat pumps, district heating and cooling systems for efficient temperature control and energy transfer.
Marine Industry
Suitable for engine cooling, lubricating oil cooling and onboard heat recovery systems in marine applications.
Food Processing
Widely used in dairy processing, beverage production, pasteurization and hygienic heat transfer processes.
Oil & Gas Industry
Applied in process cooling, energy recovery, utility systems and industrial heat exchange operations in oil and gas facilities.
