Share this
New Swagelok DPX and DFX Diaphragm Valves Have Replaceable Seats
by Jeff Hopkins on 8/27/15 6:30 AM
Innovative design enables easy and repeatable seat replacement while providing a high performance seat seal.
Put a plastic seat inside a steel valve, and there's no question about which part is most likely to wear out first. With some models, a bad seat means tossing out the entire valve. With many models that have replaceable seats, the design requires a seat big enough to manipulate by hand, making the seat more susceptible to swelling from chemical interaction or high temperature.
Swagelok engineers have come up with a new alternative, the new lines of DP and DF Series Valves: DPX and DFX replaceable seat diaphragm valves. They are designed with a tight-fitting seat that offers minimal entrapment areas and a short height to limit chemical and thermal expansion. With the use of an installation tool, customers can put in new seats right at the job site.
These two new lines were designed with advanced semiconductor precursor delivery in mind. They come in manual or pneumatically actuated models.
Error free installation
The installation tools make it easy to install a new valve seat without risking damage to the sealing surface, because the seat never touches your hands. The new seat comes in a protective holder that ensures that the seat is installed in the correct direction. It also compresses the seat diameter to enable a pressed fit into the pre-staked valve body. You get a tight seal with minimum entrapment areas for high purity systems.
To remove the old seat, use the seat removal tool that comes with the replacement kit. You simply disassemble the valve, screw on the removal tool nut, and rotate the removal arbor. The tool never touches the body, and the seat lifts right out.
To put in the new seat, just place the carrier in the valve — it's designed in such a way that you can't put the seat in upside down —screw on the installation nut and screw down the installation arbor. That's all there is to it.
The kit also comes with a diaphragm and a support diaphragm for rebuilding the valve.
Kits are available in quantities of 25, 50, 100, and 200. You can get detailed specifications and download the valve catalog, seat replacement instructions, and presentation here.
More:
Share this
- Archive (465)
- Assembly Services (207)
- About (100)
- Seal Support Systems (96)
- Best Practices (88)
- Training Services (74)
- Fittings (51)
- Semiconductor Applications (49)
- Hoses and Flexible Tubing (47)
- Regulators (44)
- Tubing (42)
- Grab Sampling Systems (32)
- Sampling Systems (32)
- Gas Systems (30)
- Services (30)
- Downloads (29)
- Valves (24)
- Application Support (18)
- Orbital Welding (17)
- Case Studies (13)
- Steam Systems (13)
- Frequently Asked Questions (12)
- Tools (12)
- Measurement Devices (7)
- Subsystems (6)
- Thermal Management (6)
- September 2023 (1)
- August 2023 (2)
- June 2023 (1)
- March 2023 (3)
- February 2023 (3)
- January 2023 (4)
- December 2022 (4)
- November 2022 (4)
- October 2022 (4)
- September 2022 (1)
- August 2022 (3)
- July 2022 (2)
- June 2022 (4)
- May 2022 (1)
- April 2022 (2)
- March 2022 (1)
- February 2022 (2)
- January 2022 (3)
- December 2021 (1)
- November 2021 (6)
- October 2021 (6)
- September 2021 (8)
- August 2021 (4)
- July 2021 (3)
- June 2021 (6)
- May 2021 (6)
- April 2021 (7)
- March 2021 (5)
- February 2021 (4)
- January 2021 (6)
- December 2020 (5)
- November 2020 (6)
- October 2020 (6)
- September 2020 (8)
- August 2020 (7)
- July 2020 (8)
- June 2020 (8)
- May 2020 (6)
- April 2020 (9)
- March 2020 (7)
- February 2020 (10)
- January 2020 (21)
- December 2019 (23)
- November 2019 (21)
- October 2019 (22)
- September 2019 (21)
- August 2019 (22)
- July 2019 (23)
- June 2019 (20)
- May 2019 (23)
- April 2019 (22)
- March 2019 (21)
- February 2019 (20)
- January 2019 (21)
- December 2018 (14)
- November 2018 (19)
- October 2018 (23)
- September 2018 (17)
- August 2018 (29)
- July 2018 (11)
- June 2018 (6)
- May 2018 (5)
- April 2018 (4)
- March 2018 (5)
- February 2018 (3)
- January 2018 (3)
- December 2017 (2)
- November 2017 (4)
- October 2017 (3)
- September 2017 (2)
- August 2017 (6)
- July 2017 (4)
- June 2017 (4)
- May 2017 (4)
- April 2017 (3)
- March 2017 (4)
- February 2017 (3)
- January 2017 (3)
- December 2016 (3)
- November 2016 (3)
- October 2016 (3)
- September 2016 (5)
- August 2016 (5)
- July 2016 (4)
- June 2016 (5)
- May 2016 (3)
- April 2016 (4)
- March 2016 (5)
- February 2016 (11)
- January 2016 (1)
- December 2015 (3)
- November 2015 (4)
- October 2015 (3)
- September 2015 (4)
- August 2015 (4)
- July 2015 (8)
- June 2015 (5)
- May 2015 (3)
- April 2015 (4)
- March 2015 (4)
- February 2015 (3)
- January 2015 (4)
- December 2014 (2)
- November 2014 (3)
- October 2014 (4)
- September 2014 (4)
- August 2014 (4)
- July 2014 (5)
- June 2014 (4)
- May 2014 (4)
- April 2014 (5)
- March 2014 (4)
- February 2014 (3)
- January 2014 (4)
- December 2013 (5)
- November 2013 (3)
- October 2013 (4)
- September 2013 (3)
- August 2013 (5)
- July 2013 (5)
- June 2013 (5)
- May 2013 (3)
- April 2013 (6)
- March 2013 (4)
- February 2013 (4)
- January 2013 (8)
- December 2012 (4)
- November 2012 (6)
- October 2012 (6)
- September 2012 (4)
- August 2012 (4)
- July 2012 (4)
- June 2012 (4)