MULTI-VALVE 100LB TANK: Includes a service valve, high-capacity filler valve with integral back-check, pressure relief valve (375 PSIG ) and a POL valve, all in one single unit ON-SITE REFILLING: No need to transport your tank to get refilled! The multi-valve 100LB tank allows you to do on-site refilling of your propane gas without disconnecting your appliances High-grade steel welded propane cylinder; powder coated for rust prevention and long lasting exterior protection X-ray and hydrostatic tested and DOT approved 100LB propane tanks are great for mixed heating systems, home fireplaces, dryers and grills Note: This propane tank is EMPTY and comes pre-purged and ready to be filled with gas