Description
CTI-Cryogenics 8044098 Roughing Valve 120VAC 50/60Hz 10W Helix NW Flange Vacuum
The CTI-Cryogenics 8044098 is a solenoid-actuated roughing valve from the Helix product line, designed for use in cryogenic vacuum systems. It controls the flow of gas during the roughing-down phase of a vacuum cycle, typically connecting the roughing pump line to a cryopump or vacuum chamber before the high-vacuum stage begins. The solenoid actuator — a Humphrey unit manufactured in Kalamazoo, USA — provides electrically controlled open/close operation at 120 VAC.
Specifications & What's Included
- Brand: CTI-Cryogenics (Helix)
- Part Number: 8044098
- Type: Solenoid-actuated roughing valve
- Input Voltage: 120 VAC
- Frequency: 50/60 Hz
- Power Consumption: 10 Watts
- Tube / Port Size: 0.625 in (5/8 in)
- Vacuum Port Flanges: NW / KF (Klein Flange) — one port open, one with foil protective cap
- Solenoid Actuator: Humphrey brand (Kalamazoo, USA)
- Manual Override: Red knob on valve body
- Fittings: Brass elbow and compression fittings on solenoid side
- Body Material: Aluminum with stainless steel flange interfaces
- Includes: Valve assembly with solenoid actuator and brass fittings as shown — no additional accessories
Applications
Roughing valves like the CTI-Cryogenics 8044098 are a standard component in cryopump-based vacuum systems used throughout semiconductor fabrication, thin-film deposition, research physics, and materials science. In a typical cryopump system, the roughing valve opens to allow the mechanical roughing pump to evacuate the chamber or cryopump to an intermediate vacuum level before the cryopump takes over for high-vacuum operation. CTI-Cryogenics (later acquired by Brooks Automation and operating under the Helix Technology brand) was one of the leading manufacturers of cryogenic vacuum equipment from the 1970s through the 2000s, and their roughing valves were widely deployed in PVD, CVD, ion implant, and research vacuum systems. Replacement roughing valves for CTI/Helix cryopump systems remain in demand for maintaining legacy semiconductor and research vacuum infrastructure.
This CTI-Cryogenics 8044098 Helix Roughing Valve has been inspected and appears to be in good used condition. The valve body, NW/KF flanges, Humphrey solenoid actuator, and brass fittings are all intact with no visible cracks, breaks, or damage. One vacuum port has a foil protective cap in place. The unit shows light surface wear consistent with prior lab use. It has not been powered up or tested at our facility, but was pulled from a working vacuum system environment. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
CTI-Cryogenics |
Model: |
8044098 |
MPN: |
8044098 |
Secondary Model: |
Helix |
Type: |
Solenoid-Actuated Roughing Valve |
SKU: |
31000 |
Voltage: |
120 VAC |
Frequency: |
50/60 Hz |
Power Consumption: |
10 Watts |
Tube / Port Size: |
0.625 in (5/8 in) |
Flange Type: |
NW / KF (Klein Flange) |
Actuator Type: |
Solenoid (Humphrey) |
Actuator Brand: |
Humphrey (Kalamazoo, USA) |
Application: |
Cryogenic vacuum systems, cryopump roughing |
Compatible With: |
CTI-Cryogenics / Helix cryopump systems |
Country/Region of Manufacture: |
United States |
Form Factor: |
Inline Valve Assembly |
Power Requirements: |
120 VAC, 50/60 Hz, 10 W |
Seller Notes: |
Valve assembly only — includes solenoid actuator and brass fittings as shown. No additional accessories. |
Condition Notes: |
This CTI-Cryogenics 8044098 Helix Roughing Valve is in good used condition. Body, flanges, solenoid, and brass fittings are intact with light surface wear. Not tested at our facility; pulled from a working vacuum system. Photos available. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |