These Ideal Vacuum UltraLock™ manually operated gate valves have an ISO NW KF40 vacuum flange. They are rated for high vacuum (HV) and follow vacuum technology standards as described in DIN 28404 and ISO 1609.

These small manually operated vacuum gate valves are built using a lever linkage locking mechanism. They have a typical life of 300,000 cycles before needing service and are made with corrosion resistant 304 stainless-steel gates and valve bodies.

UHV vs HV Versions:
Our Conflat CF flanged gate valves are UHV rated. The bellows are welded to the bonnet plate, and oxygen-free, high-thermal conductivity (OFHC) copper sealing gaskets and flange knife-edges form the required metal-to-metal seal between the bonnet plate and valve body. Our Conflat UHV UltraLock valves have a low leak rate of < 3.75 x 10^-10 Torr l/sec and are bakeable up to 200 °C with the gate open (150°C with the gate closed).

Our KF and ISO-F flanged gate valves use Viton O-rings for the gate and bonnet plate seals and are therefore limited to high-vacuum (HV) applications with ultimate pressures down to 3x10^-8 Torr. KF and ISO-F series UltraLock valves have a leak rate of 1.5 x 10^-9 Torr l/sec and are bakeable to 150 °C (with the valve open or closed). Specifications:
Our Ideal Vacuum UltraLock gate valves are designed for dependable High and Ultra- High Vacuum (UHV) applications and are often used in combination with cryo, turbo, and ion high vacuum pumps. Available sizes include Conflat CF 2.75, 4.5, 6, 8, 10, and 12 inch sizes; ISO-F DN -63, -100, -160, -200, -250, -320, -400, -500, and -630 sizes; and quick flanged sizes KF-40 and KF-50.

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