Samson control valve 3241

3241 type valve; ANSI and JIS types are combined with actuators, such as 3271 or 3277 pneumatic actuators

　　Samson 3241 control valve ANSI and JIS types

Project inscription meaning: 1. QR code 2. Type certification 4. Material 5. Year and month of manufacture 6. Nominal diameter: DIN: DN · ANSI: NPS · JIS: DN7. Rated pressure: DIN: PN · ANSI: CL · JIS: K8. Order number/project 10. Flow coefficient: DIN: KVS · ANSI: CV11. Characteristics:%: Equal percentage · LIN: Linear mod lin: Modified Linear NO/NC: Open/Close application 12. Seat valve core seal: ME: Metal · HA: Carbide metal ST: with Stellite ® Surface metal base material KE: Ceramic · PT: PTFE soft seal · PK: PEEK soft seal 13 Seat code (internal material): Upon request 14 Pressure balance: DIN: D · ANSI/JIS: B Model: M: Mixing valve · V: Diverter valve 15 Noise reduction: 1: Diverter (ST) 1 · 2: ST2 · 3 · ST3 · 1/PSA: ST1 standard and integrated into PSA valve seat · AC-1/AC-2/AC-3/AC-5: Anti cavitation internal parts, Model 1 to 5LK: Porous valve core · LK1/LK2/LK3: Porous valve core with diverter ST1 to ST3 · MHC1: Porous sleeve · CC1: Combination sleeve · ZT1: Zero stroke · LDB: Low dB16 PSA Model: PSA

2.2 For the nameplate of the actuator, please refer to the associated actuator document. 2.3 The valve seat and spool of the material number valve have an item number. When you contact us, simply provide this item number to determine which material is being used. In addition, the valve seat code is used to identify the internal material. This valve seat code is marked on the nameplate. 2.4 Label when adjustable packing has been installed. When adjustable packing has been installed, an indicator label is affixed to the valve (see Figure 2-4). Figure 2-4: Label 2.5 with adjustable packing installed. Optional RFID tag. The RFID tag is located next to the valve nameplate ordered together with it. It contains the same data as the QR code on the electronic nameplate. Tags can be read using smartphones, tablets, or RFID readers. According to the application scope of technical parameters (please refer to the chapter 'Structure and Working Principle').

Please refer to Figure 3-1 and Figure 3-2 (on page 3-2) for the structure and working principle. The 3241 valve is a single seat straight through valve. This valve is best used in conjunction with SAMSON 3271 or 3277 pneumatic actuators. It can also be used in conjunction with other executing agencies. The valve seat (4) and the valve core with valve stem (5) are both installed in the valve body (1). In some models, the valve seat is integrated into the valve body. The valve stem is connected to the actuator push rod (A7) through the valve stem joint fixture (A26) and sealed with a spring-loaded V-ring packing (16). The spring in the pneumatic actuator (A) is located above or below the diaphragm, depending on the selected fail safe action. The change in signal pressure acting on the diaphragm may cause the valve core to move. The size of the actuator depends on the membrane area. The medium flows through the valve in the direction indicated by the arrow. An increase in signal pressure will cause an increase in the force acting on the actuator diaphragm. At this point, the spring will compress. The actuator push rod will retract or extend, depending on the selected direction of action. Therefore, the position of the valve core in the valve seat will change, determining the flow rate through the valve.

The fault safety position of the control valve in the event of a gas source or control signal failure depends on the actuator used (please refer to the associated actuator document). Depending on the arrangement of compression springs in SAMSON 3271 and 3277 pneumatic actuators, the valve has two different fail safe positions: - actuator push rod extension (FA). When the signal pressure drops or the air source malfunctions, the spring moves down to push the actuator push rod and close the valve. When the signal pressure increases enough to overcome the spring force, the valve opens. When the signal pressure drops or the air source malfunctions, the spring moves up the actuator push rod and opens the valve. When the signal pressure increases enough to overcome the spring force, the valve closes.