Automatic Refill Units SPN Automatic The SPN is an automatic refill unit for barrier fluid pressurization in seal circuits. Pressurization by pneumatic or electric power, or a combination of both. The refill unit tank is designed for pressureless operation and is equipped with a level switch and a sight-glass. The refill unit has all pipework as far as the distributor unit. Separate components are installed in the seal circuit to cool and to circulate the barrier medium. Contact Us Enquire Now
