Permaseal® Plug Valves can be specified with partial, full or bolt-on jackets. The inherent features of Permaseal® valves combined with a jacketed design make them ideal for piping systems where continuous process flow is required. Jackets allow application of heat to the valve to maintain higher and more precise control of the process temperature, preventing build-up or solidification in the system. All jackets are rated at 150 psi (1030 kPa) at temperatures to 750°F (400°C).

Full Jackets
Fully jacketed valves provide the fastest and most uniform transfer of heat to assure flow through the valve for critical processes. The jacket encompasses the complete valve body including contact with the oversized valve flanges. Face-to-face dimensions conform to ANSI standards for the flange size. The jackets are available on 0.75–2" (20–50mm) and 3–6" (80–150mm) valves. Carbon steel valves have carbon steel jackets and 316 stainless steel/high alloy valves have 304 stainless steel jackets. Threaded NPT couplings are used to pipe the heated medium.

Partial Jackets
Partial jackets are the most economical, allowing use of standard flanges and providing heat transfer to the body of the valve. They are designed to assure valve operation on non-critical processes. Jackets are available on 2-way valves in 0.5–6" (15–150mm) sizes. Carbon steel jacket material is used on carbon steel valves and 304 stainless steel jacket material is used with 316 stainless steel and high alloy body materials. The heating medium is piped through threaded NPT couplings.

Bolt-On Jackets
This versatile jacket bolts in place for converting standard valves to fully jacketed models. Uniform flange-to-flange heating of the valve is provided at continuous temperatures to 750°F (400°C) at a pressure rating up to 150 psi (1030 kPa) with no danger of cross contamination of the process. The heating medium enters the carbon steel heat exchanger embedded in the aluminum alloy jacket casting. Heat is transferred to the valve with the aid of a heat transfer media applied at installation. Bolt-on jackets are available on 2-way 1–6" (25–150mm) valve sizes with 150 lb. end connections.

Permaseal® Automatic Well Test Valves
Permaseal® Automatic Well Test Valves allow samples of crude oil mixed with sand and traces of steam to be automatically sampled from well heads. Permaseal Plug Valves are proven performers in hot, corrosive and abrasive oil production service. Since accurate well testing is an essential part of maximizing the profitability of oil fields, a leaky valve within a manifold may compromise the accuracy of all individual well tests, leading to lost production. The Permaseal® Plug Valve’s ability to demonstrate dependable and reliable positive shutoff gives production engineers the information needed to maximize well pumping efficiency. A variety of Well Test Valve configurations are available including 3-way valves, double block and bleed, and dual Permaseal valves with one common actuator.

3-Way Well Test Valves
Permaseal® 3-Way Plug Valves allow flow to be diverted to the third port for sample collection.

Double Block and Bleed
When fitted with a NPT tap and bleed valve at the annulas of the valve body, the Permaseal® Plug Valve has the advantage of being quickly and easily checked in service for leakage. And, the top entry design makes it easy to repair if necessary.
Dual Permaseal® Valves With Common Actuator
The two-valve, one actuator Permaseal AWT Assembly installed in a single well manifold allows oil lease personnel to easily determine if cross contamination is occurring between wells. The double block and bleed design prevents cross-contamination and ensures that test results reflect the true composition of crude oil from an individual well.