This is a KF-D25 High Vacuum flange with an extra KF-D16 fitting for 4'' diameter tube of RTP Furnace. KF-D16 fitting port can be used for installing the Compact Digital Vacuum Gauge.

SPECIFICATIONS

Features	Made of Stainless Steel with double high-temperature silicon O-rings on flange. The KF-D16 and KF-D25 fitting ports were built on the flange. Such assembly kit can seal one end of 100 mm diameter ceramic or quartz tube.
Applications	KF-D25 port can be connected to the SS high vacuum bellow via ball valve. Better sealing effect and higher pumping rate can be achieved via this configuration. KF-D16 port can be use for connecting to vacuum sensor or Compact Digital Vacuum gauge.
Warning	Must put a refractory tube block in front of the flange (see picture below) to avoid heat radiation melt silicone O-ring. You may order a ceramic block in related products. Please do not over tighten the three hex screws on the flanges to avoid overpressure incidents. The recommended torque is 35~40 inch-lbs. For liability considerations, MTI does not recommend or endorse the use of any toxic, flammable or corrosive gases with our flange assemblies. Please contact us with any concerns.