Spirapak 4033-70K-Vpp Module, Spiral Wound Element With Integrated PVC Housing, model Spirapak 4033-70K-VPP is manufactured by Koch Membrane Systems. Spirapak products are the original products of our advanced Kpak® Plus modules, which are used for the recovery of electrocoat paints and the treatment of oily wastewater. The feed spacer thickness of this product is 0.043" (1.09 mm), and it is sealed with EPDM. This product is a spiral ultrafiltration module suitable for industrial applications.