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Summary of Contents for Samson 3241-7
- Page 1 Pneumatic Control Valves Type 3241-1 and Type 3241-7 Type 3241-1 Type 3241-7 Fig. 1 · Type 3241 Valve with Type 3271 Actuator and with Type 3277 Actuator Mounting and Operating Instructions EB 8015 EN Edition September 2009...
- Page 2 Contents Contents Page Design and principle of operation ....4 Assembling valve and actuator ..... . 4 Assembly and adjustment .
- Page 3 Safety instructions General safety instructions The control valve may only be mounted, started up or serviced by fully trained and qualified personnel, observing the accepted industry codes and practices. Make sure employees or third persons are not exposed to any danger.
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Page 4: Design And Principle Of Operation
When the signal pressure is reduced or the tion power supply or signal fails, the springs move the actuator stem upwards and open The Type 3241-1 and Type 3241-7 Pneu- the valve. matic Control Valves consist of a Type 3241 When the signal pressure increases again,... - Page 5 Assembling valve and actuator Type 3271 Actuator Valve body 1.1 Nuts 1.2 Gasket Seat Plug 4.1 Spring 4.2 Packing Valve bonnet 5.2 Threaded bushing 5.3 Travel indicator scale Plug stem 6.1 Stem connector nut 6.2 Lock nut 6.3 Yoke (DN 200 to DN 300) Stem connector Actuator 8.1 Actuator stem...
- Page 6 6.1 Stem connector nut 6.2 Lock nut 6.3 Yoke (DN 200 to DN 300) Stem connector Actuator 8.1 Actuator stem 8.2 Nut Fig. 3 · Sectional drawings of Type 3241-7 and valve body DN 200 to DN 300 EB 8015 EN...
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Page 7: Pretensioning Springs In Actuator Version "Actuator Stem Extends
Assembling valve and actuator 2. Remove the stem connector clamps (7) Note on disassembling an actuator! and the ring nut (8.2) from the actuator Before disassembling an actuator with (8). Slide the ring nut over the plug stem. fail-safe action "Actuator stem extends" and 3. -
Page 8: Valve And Actuator With Different Rated Travels
Assembling valve and actuator Valve and actuator with Actuator version "Actuator stem retracts" different rated travels Note! Actuator version "Actuator stem extends" The springs in the actuator version “Actuator stem retracts” cannot be preloaded! Note! Valves that have a travel smaller than the If a valve is to be attached to a larger actua- rated travel of the actuator always need to tor (rated travel of actuator larger than the... -
Page 9: Installation
Strainer, bypass position. However, vertical installation with the actuator pointing upwards is preferable We recommend you to install a SAMSON for valves in nominal size DN 100 or larger Type 2 Strainer upstream of the valve body. to facilitate maintenance. -
Page 10: Maintenance – Replacing Parts
WA 029 EN). The instructions can be shut-off may be impeded by dirt or other im- viewed on the Internet at purities caught between the seat and plug, www.samson.de/pdf_en/e00290en.pdf. or by damaged seating surfaces. Remove the parts, clean them thoroughly Removing the actuator: and replace them with new ones, if neces- sary. -
Page 11: Standard Valve Version
Maintenance – Replacing parts Standard valve version 4. Pull all packing parts out of the packing chamber using a suitable tool. Replace 5.1.1 Stuffing box packing damaged parts. Clean packing chamber thoroughly. 1. Remove the body nuts (1.1) as well as 5. -
Page 12: Seat And/Or Plug
Maintenance – Replacing parts remachined until dimension x is reached, 8. Insert new flat gasket (1.2) into the and if the seat bore exceeds 12 mm. For body. Carefully place the valve bonnet seat bores of 63 mm and larger, the en- onto the valve body, making sure that tire sealing ring can be exchanged, if the large V-shaped port of the V-port... -
Page 13: Valve With Extension Bonnet Or Metal Bellows Seal
Maintenance – Replacing parts Valve with extension bonnet 5.2.2 Plug or metal bellows seal When exchanging the plug, check the pack- ing (4.2) or, preferably, replace it as de- 5.2.1 Stuffing box packing scribed in section 5.2.1. Nominal sizes DN 15 to DN 150: To un- 1. - Page 14 Maintenance – Replacing parts 1.1 Nuts Plug stem 1.2 Gasket 6.1 Stem connector nut Plug 6.2 Lock nut 3.5 Tension ring 6.3 Plug stem extension 3.6 Flange 6.4 Washers 3.7 Screws 6.5 Nut (DN 15 to DN 150) 4.2 Packing 6.6 Metal bellows Bonnet 6.7 Seal...
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Page 15: Seat
To complete assembly, refer to section seat in section 5.2.2. 5.2.5. 2. Unscrew the nut (6.5) using a SAMSON socket wrench (see EB 029 EN). Nominal sizes DN 200 to DN 300: 3. Pull the plug stem extension with the 1. -
Page 16: Reassembly
Maintenance – Replacing parts Nominal sizes DN 200 to DN 300: Replacing the collar or seal 1. Unscrew the plug (3) from the plug stem For version with pressure-balanced plug: as described in section 5.2.2. 1. Unscrew the stem connector nut and lock Pull the plug stem (6) together with the nut (6.1 and 6.2) from the plug stem. - Page 17 Maintenance – Replacing parts Completion of reassembly: 11. Slide the stuffing box parts over the plug stem into the packing chamber. Make 10. Insert new gasket (1.2) into the valve sure to keep the proper order. body. Carefully place the valve bonnet 12.
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Page 18: Material Identification
Material identification Material identification 14. Mount the actuator and adjust the upper and lower range values as described in The trim material of older valves is indicated section 2.1. by an identification mark on the guide bush- ings, seat and plug as described below. Nominal sizes DN 50 to DN 150 A detailed trim material identification has 5. -
Page 19: Seat Code
Material identification Seat code Dimensions and weights Refer to the associated Data Sheet for di- Trim material identification on the name- mensions and weights of the valve versions: plate, pos. 13, MExx (xx = seat code). Type 3241 - DIN version T 8015 EN Type 3241 - ANSI version T 8012 EN... -
Page 20: Description Of Nameplates
Description of nameplates Description of nameplates SAMSON SAMSON 11 12 Type designation Modification index CE marking or "Art. 3, Abs.3" (see article 3, § 3 of PED), where applicable Effective diaphragm area Identification no. of notified body, fluid group and... -
Page 21: Customer Inquiries
Customer inquiries Customer inquiries If you encounter any problems, please sub- mit the following details: Order number Type, product number, nominal size and version of the valve Pressure and temperature of the process medium Flow rate in m³/h Bench range of the actuator (e.g. 0.2 to 1 bar) Has a strainer been installed? Installation drawing... - Page 22 EB 8015 EN...
- Page 23 EB 8015 EN...
- Page 24 SAMSON AG · MESS- UND REGELTECHNIK Weismüllerstraße 3 · 60314 Frankfurt am Main · Germany Phone: +49 69 4009-0 · Fax: +49 69 4009-1507 EB 8015 EN Internet: http://www.samson.de...
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