Case Study: Emergency Shutdown Valves

Industry: Oil and gas
Plant type: Natural gas processing
Application: Emergency shutdown (ESD) valves on de-ethanizer reboilers
Location: Dallas, West Virginia
Product: V1-2

Overview: This project was a new project build; the plant never had a valve in this application - (ESD) valves on de-ethanizer reboilers - at this site. These severe service applications require three separate actuated valves: two 12” 300# ASME/ANSI class valves for the hot oil application (Therminol 55) to the de-ethanizer and one 8” 300# ASME/ANSI class valve for the hot oil to the amine still. ValvTechnologies and Portersville PRD are the trusted advisors and preferred suppliers of the industry-leading high-performance, zero-leakage isolation valves in critical applications for the engineering firm completing the design: the firm knew they could count on the superior expertise and global experience of ValvTechnologies and Portersville PRD.

Requirement: The customer required a metal seated, zero-leakage valve with design temperature rating to 575˚F and closing speed of 30 seconds. Additionally, the plant required a competitive price and quick delivery for a reliable automated ball valve package.

Solution: ValvTechnologies supplied two 12” 300# Class valves for the hot oil (Therminol 55) to the de-ethanizer and one 8” 300# Class valve for the hot oil to the amine still. Benefits to the customer include:

Through conduit design: No tortuous flow path. When open it has the highest possible Cv’s. Minimized wear and tear resulting in eliminating vibration and reduced maintenance.
Fixed position – quarter turn: No seating torques required resulting in minimized stem wear and lower cost of ownership.
Hardened blowout proof stem: One piece, inserted through the body and shouldered. This eliminates the weak link of collared and pinned designs for increased plant safety.
Metallic body seal ring: Increases body integrity by eliminating external leakage resulting in improved reliability and zero-leakage shutoff.
Live-loaded packing gland: Minimum four bolt configuration with shallow stuffing box. This ensures consistent torque at variable pressures and temperatures or increased reliability.
Hardcoated and mate lapped seats: High Velocity Oxygen Fuel (HVOF) RiTech® chrome carbide hardcoating with a Rockwell C of up to 72 with mate-lapped seats, making the valve wear and corrosion resistant, increasing reliability and providing zero-leakage shutoff.
Seat designs: Hardcoated, both ball and integral downstream seat to the end-cap to eliminate a potential leak path for increased reliability.
Designed for ease of installation and maintenance, this valve is easily actuated, increases system reliability and efficiencies, is easy to operate and reduces maintenance time and cost
Every valve is tested, documented and serialized for increased reliability, safety and total traceability.

Result:
ValvTechnologies and Portersville PRD together engineered turnkey automated ESD valve solutions that exceeded the expectations: with high safety factors, the customer has confidence in the event of an emergency that these systems will now safely be disabled to prevent potential catastrophic plant damage.

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