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Slow Pump Pneumatic Stainless Steel Valves

Key High’s Slow Pump Valve series (SPV) is a family of economical, easy-to-use valves. SPV series valves are two-stage valves that increase production rates and reduce turbulence within the vacuum system. Key High’s SPV series valves feature all the field-proven features found in our “PSA” series valves. SPV valves feature a small bypass valve built into the parent valve. This method offers a compact design and minimizes the assembly's physical footprint.

Operation method

SPV valves are two-stage valves.  First, the BYPASS Valve is opened, slowly starting the pump down cycle. Once the chamber reaches a specified vacuum pressure, the parent valve is opened, allowing full pumping speed. SPV valves feature a removable orifice, allowing users more control over the pump down cycle.

Key High’s SPV valves are designed to control the pump down cycle for sensitive applications. When combined with our DF SERIES DIFFUSERS for venting, turbulence and particulate issues with substrates are virtually eliminated.

Our SPV series valves have been successfully installed in many applications, including the semiconductor and optical industries. They allow precision control over the roughing process.

Features
  • Compact Footprint
  • Bellows Sealed
  • Standard flange interfaces
  • All GTAW welds are internal or 100% penetration
  • Interchangeable orifices, Standard sizes offered are .093”, .125”, .187”
  • Bypass valves are normally closed, fail-safe
  • 120/60 solenoids included other voltages available upon request

 

 
 

 

 

SPV Pneumatic Angle Valves

SPV Pneumatic Angle Valves

SPV Pneumatic Angle Valves

 
PART NUMBER TUBE OD PORT STYLE A B C D E F
SPV-100-N 1” Tube End 7.05 2.12 2.12 2.00 5.06 3.65
SPV-100-K-N 1” NW-25 7.17 2.25 2.25 2.00 5.75 3.65
SPV-100-N-MS 1” 2-1/8” OD MET-SEAL 7.22 2.42 2.42 2.00 5.22 3.65
SPV-150-N 1-1/2” Tube End 8.03 2.25 2.25 2.75 5.46 3.90
SPV-150-K-N 1-1/2” NW-40 8.16 2.46 2.46 2.75 7.41 3.90
SPV-150-N-MS 1-1/2” 2-3/4” OD MET-SEAL 8.24 2.46 2.46 2.75 7.41 3.90
SPV-200-N 2” Tube End 10.77 3.25 3.25 3.50 7.40 4.12
SPV-200-K-N 2” NW-50 10.93 3.50 3.50 3.50 7.55 4.12
SPV-200-N-MS 2” 3-3/8” OD Tube End 10.99 3.47 3.47 3.50 7.62 4.12
SPV-250-N 2-1/2” Tube End 10.88 3.25 3.25 4.00 7.87 4.40
SPV-250-K-N 2-1/2” NW-63 Clamp Style 11.68 3.50 3.50 4.00 8.62 4.40
SPV-250-N-MS 2-1/2” 4-1/2” OD MET-SEAL 11.26 3.47 3.47 4.00 8.25 4.40
SPV-300-N 3” Tube End 11.87 3.50 3.50 4.50 8.37 4.65
SPV-300-K-N 3” NW-80 Clamp Style 12.58 3.75 3.75 4.50 9.75 4.65
SPV-300-N-MS 3” 4-5/8” OD MET-SEAL 12.16 3.78 3.78 4.50 8.65 4.65
SPV-400-N 4” Tube End 13.69 4.25 4.25 6.00 9.45 5.40
SPV-400-K-N 4” NW-100 Clamp Style 13.94 4.50 4.50 6.00 9.71 5.40
SPV-400-N-MS 4” 6” OD MET-SEAL 14.07 4.69 4.69 6.00 9.89 5.40

 

Options: SPV Pneumatic Angle Valve

Add option code to suffix of part number.

DESCRIPTION OPTION CODE
24 Volt DC Solenoid -1
24 Volt AC Solenoid -2
240 Volt AC Solenoid -3

 

Optional Accessories Available: Contact Factory

  • Kalrez®, Chemrez®, Paraflour® O-rings are available, contact factory for pricing schedule.
  • Custom bypass orifice sizes are available for most applications, contact factory.

 


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

Precision Welded. Performance Proven.
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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36 Southern Boulevard, Nesconset, NY 11767
1-631-360-3970
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