Ventiduct Option for Temperature Sensitive and Volatile Media Applications0 pages

www.clarksol.com TECHNICAL BULLETIN Takasago Ventiduct Feature For Temprature Sensitive And Volatile Fluid Media Applications TYPICAL APPLICATIONS The Ventiduct is an optional part fitted between the valve body and solenoid. It has ducts for ventilation and heat radiation. Ventiduct isolates and protects the metal solenoid parts from contact with volatile corrosive gases such as Trifluoro Acetic Acid that manage to pass through a standard Teflon isolation diaphragm. The Ventiduct protects the fluid media from heat generated by the solenoid. Conversely, Ventiduct shields the valve solenoid when the fluid media is at a high temperature. The pictures to the right demonstrate the effec-tiveness of Ventiduct in protecting the metal sole-noid parts from exposure to Trifluoro Acetic Acid for 48 hours at room temperature. A 0.2 mm thick PTFE isolation diaphragm was used. The metal plunger of Valve A is clearly corroded while Valve B is unaffected. The charts below demonstrate the effectiveness of Ventiduct for heat control by thermal radia魭tion. The Ventiduct reduces the temperature rise in the valve by approximately 12oC. Test Conditions: Fluid- water; Valve Type- MTV-2; Full Rated Voltage Applied (24Vdc) Without Ventiduct With Ventiduct Clark Solutions 10 Brent Drive Օ Hudson, MA 01749 Tel. 978 / 568 3400 Օ Fax 978 / 568 0060