Pope's sturdy stainless steel portable pressure vessels let you handle a wide variety of sterile, high purity or flammable substances easily and safely. These vessels are designed to take pressures exceeding 15 psi and have a working pressure of 130 psi and higher at according to ASME section VIII specifications and meet all OSHA, state and local regulations. Each vessel features a permanent ID plate and comes with a choice of closure styles. Closures seal effectively using internal pressure and cannot be removed while the vessel is pressurized. These durable vessels are available in capacities from 1 to 200 gallons.