Thetford's Drain Valve Lubricant is specially formulated to lubricate all waste treatment systems. The 100% biodegradable liquid work with both black and grey water tanks, on RVs or boats. Drain Valve Lubricant coats plumbing lines, preventing sticky valves and restoring the smooth operation of waste evacuation.
Return or exchange within 30 days from the delivered date.
1. Items received within 30 days from the delivered date.
2. Items received unused, undamaged and in original package.
3. Return shipping fee is paid by buyer.