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Manual, Motorized, & Electropneumatic Butterfly Valves, ISO-MF

Key High's ISO-MF series butterfly valves feature industry-standard ISO-MF flanges. This flange interface uses common centering rings/clamps, allowing components sourced from different manufacturers to be integrated quickly. The QBV ISO-MF interface is flexible and convenient. Since the flanges do not have a bolt circle, components can be easily rotated to the necessary position when building the foreline. The QBV ISO-MF series valves are offered in four (4) standard sizes, NW 63 through NW 160 are low-profile designs and offer high conductance.

 

 

Manual Butterfly Valves; ISO-MF Interface

Manual Butterfly Valves; ISO-MF Interface

Manual Butterfly Valves; ISO-MF Interface

 
PART NUMBER LINE SIZE A B C D FLANGE SIZE
QBV-63-SS 2-1/2" 2.37 4-1/2" 4.18 3.56 NW 63
QBV-80-SS 3" 2.85 5-1/2" 4.18 4.08 NW 80
QBV-100-SS 4" 3.87 5-3/4" 4.18 4.31 NW 100
QBV-160-SS 6" 5.75 8" 4.18 6.87 NW 160

 

Options: Manual Butterfly Valves; ISO-MF Interface

Add option code to suffix of part number.

DESCRIPTION OPTION CODE
Locking Handle for Damper Applications -HH
 
 

Motorized Butterfly Valves; ISO-MF Interface

Motorized Butterfly Valves; ISO-MF Interface

Motorized Butterfly Valves; ISO-MF Interface

 
PART NUMBER LINE SIZE A B C D E FLANGE SIZE
QBV-63-M-SS 2-1/2" 2.37 4-1/2" 4.18 8.12 4-1/2" NW 63
QBV-80-M-SS 3" 2.85 5-1/2" 4.18 8.62 4-1/2" NW 80
QBV-100-M-SS 4" 3.87 5-3/4" 4.18 8.75 4-1/2" NW 100
QBV-160-M-SS 6" 5.75 8" 4.18 9.87 4-1/2" NW 160

Standard actuators are 120/60 ac, cycle time 3.5 seconds per 90 degrees, duty cycle is 25%, NEMA 4 enclosure.

 

Options: Motorized Butterfly Valves; ISO-MF Interface

Add option code to suffix of part number.

DESCRIPTION OPTION CODE
12 Volt DC Solenoid -12VDC
24 Volt DC Solenoid -24VDC
Two Additional Switches for Use As Limit Switches -LS
Potentiometer: For measuring resistance output for feedback of actual position. Potentiometers offered in 0-135 ohm, 0-1000 ohm, and 0-5000 ohm, must be specified at time of order -P

 

 

Electropneumatic Butterfly Valves; ISO-MF Interface

Electropneumatic Butterfly Valves; ISO-MF Interface

Electropneumatic Butterfly Valves; ISO-MF Interface

 
PART NUMBER LINE SIZE A B C D E F FLANGE SIZE
QBV-63-P-SS 2-1/2" 2.37 4-1/2" 4.18 5.25 7.06 3.56 NW 63
QBV-80-P-SS 3" 2.85 5-1/2" 4.18 5.75 7.06 3.56 NW 80
QBV-100-P-SS 4" 3.87 5-3/4" 4.18 6.20 8.20 4.37 NW 100
QBV-160-P-SS 6" 5.75 8" 4.18 7.32 8.20 4.37 NW 160

All pneumatic QBV-MF air cylinders are quick-acting and feature factory “Air Cushions.” Air Cushions dampen vibration during the valve's opening and closing cycles. Pneumatic QBV-MF series valves have double-acting air cylinders that are normally closed. Operating air pressure is 60 to 100psig. In the event of an electrical utility failure, the valve will close and remain closed until service is restored. All pneumatic QBV-MF series valves are shipped with a 120/60 solenoid.

 

Options: Electropneumatic Butterfly Valves; ISO-MF Interface

Add option code to suffix of part number.

DESCRIPTION OPTION CODE
12 Volt DC Solenoid -12VDC
24 Volt DC Solenoid -24VDC
24 Volt AC Solenoid -24VAC
230 Volt AC Solenoid -230VAC
Magnetic reed switches for position indication. Reed switches feature an LED indicator for visual confirmation of valve position and have a two-meter cable. Switches are 110 to 120 VAC or 4.5 to 24 VDC and must be specified at time of order. -RS

 

General options available, please contact factory.

  • Kalrez®, Parafluro®, or other suitable sealing materials
  • Roughing ports / Gauge ports consisting of KF, MET-SEAL and VCR® flanges are available.

Product information is subject to change without notice. Product images may include options or accessories not included with the base model.

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For 50 years, Key High Vacuum Products, Inc. has been a trusted leader in precision-engineered stainless steel high vacuum weldments. With tens of thousands of unique weldments in use—from particle accelerators to industrial leak detectors—our expertise is proven across industries. Rooted in innovation, craftsmanship, and an unwavering commitment to customer satisfaction, we deliver high-quality, customized solutions that drive success. Every day, our team brings a unique blend of passion and precision, ensuring your goals are met with excellence—because your mission matters. Experience the Key High difference.
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