Description
Spirax Sarco steam injectors use steam to raise the temperature of water or other liquids. They work by using a jet of steam to draw in the liquid through radial ports, mix it, and distribute the heated liquid throughout the tank or vessel.
The circulation induced by the injector ensures thorough mixing and avoids temperature stratification.
Three sizes of injector are available to suit a wide range of flowrates.
The smallest, the IN15, has a male and female thread for direct mounting to a tank wall from the outside, or to pipework within the tank.
The IN25M and IN40M are available with either male thread or butt-weld connection and are fitted to pipework in the tank, or to a tank wall connection.
For higher capacities, two or more injectors may be mounted in parallel.
Principal features
- All stainless steel.
- Ideal for boiler feedtank heating and de-aeration.
- For efficient steam heating of water and other fluids.
- Heats, mixes and circulates – no moving parts.
- Compact design – minimises noise and vibration.
Materials
Austenitic stainless steel ASTM A351 CF3M.
Available types
The IN15 is supplied with a ½” female and 1″ male thread,
available in BSP T Rp (ISO 7-1) or NPT.
Options for the larger injectors are shown below:
| IN25M | IN40M | |
| BSPT male | 1″ | 1½” |
| NPT male | 1″ | 1½” |
| Butt-weld | 1″ Schedule 80 | 1½” Schedule 80 |

IN15, IN25M and IN40M
Steam Injectors
SPIRAX SARCO Steam Product Solutions
- IN15, IN25M and IN40M Steam Injectors
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