The search for oil and gas has pushed exploration into deeper and much more harsh environments, which demands that equipment perform successfully under the most extreme conditions. For example, a challenging application for check valves are chemical injection systems, which depend upon the valves that prevent the reverse flow of chemically aggressive wellbore fluids at extreme temperatures and pressures.
Lee Products is now offering Zero Leak Check Valves that are manufactured from materials that are compliant with NACE specification MR0175/ISO 15156. They feature MP35N bodies and poppets for durability and custom polymeric valve seats that ensure zero leakage of fluids at pressures up to 15,000 psid and at temperatures up to 400ºF. Seat materials are also available to ensure compatibility with typical subsea and down hole fluids and also gas exploration and production applications.
The valves are also self-retained without the need for O-rings, facilitated by the use of the innovative and field-proven Lee locking end which securely locks the valves in place and prevents any bypass leakage. They are available in sizes from 0.187” up to 0.500” (4.75mm/12.7mm) diameter.
Image courtesy of Lee Products