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G3/4'' L-Bore 3-Way Stainless Steel Electric Ball Valve 24V DC - BL3SA
£424.14 incl vat
G3/4'' L-Bore 3-Way...
G3/4'' L-Bore 3-Way...
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G3/4'' L-Bore 3-Way Stainless Steel Electric Ball Valve 24V DC - BL3SA


3 Way electric ball valve (L-bore) with G3/4 inch pipe threads and powerful and energy efficient 24V AC/DC actuator (max 40Nm). Media from -20 to 130°C, max pressure 63 bar at 20°C. Stainless Steel valve housing with stainless steel ball and PTFE/FKM valve seats. The nominal diameter is 15mm, the Kv-value is 13m3/h (216.7 l/min water at dP=1 bar). 3-point control. Rotation 0-90° in only 7 sec. Compact and strong actuator housing (IP67) with position indicator. Manual override function and two extra limit switches for position feedback.

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£424.14 incl VAT info info
£350.53 excl VAT
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This strong and energy efficient 3-way (L-bore) electrical ball valve from Tameson can be used to automatically shut of pipes with gas or fluids. The valve has 3/4 inch pipe threads (internal thread, BSPP). The housing of the valve is made of stainless steel with a stainless steel ball and PTFE (teflon)/FKM sealing. The actuator is suitable for both 24 volt DC (direct current) and 24 volt AC 50/60Hz (alternating current). With switches on the circuit board, the actuator can be set for AC or DC. The factory default setting is direct current (DC). The actuator has a robust aluminium housing (IP67, provided that an appropriate cable is connected) and delivers maximally 40 Nm torque. The valve rotates from 0 to 90 degrees in 7 seconds. When the ball reaches an end position, the electric motor is turned off and no energy is consumed. The actuator is equipped with two additional limit switches for position-feedback. The limit switches are positioned at 0 and 90 degrees. If required, the angular position of the switches can be adjusted by the user. A mechanical position indicator on the top of the actuator shows the valve position. The actuator is equipped with a manual override.

Key benefits

  • Robust stainless steel ball valve with 3/4 inch pipe threads
  • Switching time only 7 seconds
  • Strong IP67 actuator housing
  • Both 24V AC and DC possible (set by switch)
  • Two extra limit switches for position feedback
  • Manual override control
  • Clear visual position indicator

Technical specifications

ActuatorBall Valve
Actuator ref:AG-040-BBall Valve ref:BL3SAL-034
Voltage:24V DC/AC (50/60Hz)Housing:Stainless steel (AISI 316)
Nom./Max. Current:0.2/1.2 ABall: stainless steel (AISI 316)
Protection:IP67Seat rings:PTFE (teflon)/FKM
Duty Cycle:S2 30min.Pipe threads: G3/4" BSP
Open/Close:7 sNominal Diameter:15mm (DN)
Amb. Temp.:-10°C..50°CInstallation length:88 mm
Range:0-90°Max pressure (@20°C):63 bar
Extra limit switches:2Function: 3-way L-bore
Manual override:YesTemp medium:-20°C..130°C

Bore and circuit function

The ball has a L-bore. By rotating the ball 90 degrees, can be switches between two circuits. The ports overlap during rotation.

ball valve circuit function L-bore schematically

Schematical drawing of the circuit function of L-bore valves









dimensions ball valve with actuator

Dimensions of the AG-040-B actuator and BL3SAL-034 ball valve.


This valve can be used in combination with gases and fluids. The valve is durable and suitable for different aggressive and corrosive media. The maximum pressure at room temperature is 63 bar, at higher temperatures the maximum allowed temperature decreases. The direction of pressure is not important, the direction of flow may be in any direction. The temperature range of the medium lies between -20°C and 130°C. At high temperatures, it is recommended to install the valve in a ventilated area. It is allowed to install the valve in a humid environment provided that all parts, like an appropriate electrical cable, are correctly fixed. Ball valves can be used with light contaminated fluids. Some examples of applications for this valve are HVAC, irrigation, industrial automation, water management.

Electrical Wiring Diagram

Follow the safety instructions and manual before you start installation.

The actuator works with 24 volt DC and 24 volt AC (50/60Hz). On the PCB are two small switches to set the actuator to AC or DC. The default setting is DC. The actuator draws 0.2A nominal, and 1.2A at maximal torque. The actuator has 3-point control. Terminals 1 (minus) and 2 (plus) are permanently connected to the power supply. Terminals 3 (minus) and 4 (minus) are for the control signals. Connecting one of these control wires, closes or opens the valve. Never connect terminals 3 and 4 at the same time to prevent short circuit and damage. The actuator has two internal limit switches. As soon as the actuator's end position is reached (0 or 90 degrees), the motor turns off and no energy is consumed. In addition, in the actuator there are two additional limit switches for control purposes. The angular position of the limiti switches can be modified. Always connect the earth and do not use the pipes as ground.

elektrical diagram AG actuator 24V DC

Electrical wiring diagram of the AG-040-B actuator. Before using alternating current, first the switches on the PCB need te be set.


Make sure that the position of the ball and the actuator are properly set before assembly. The actuator is provided with two adapters to connect the actuator to the valve shaft. Mount the actuator to the valve with the provided bolts. There should be no play between both flange. Use our fittings range for the connection between the pipe and the valve.

In the box

  • Actuator AG-040-B (cable not included)
  • Drive shaft adapter (9x9mm, 11x11mm)
  • 4 bolts M5x16mm & spring washers (for F03 flange)
  • 4 bolts M6x16mm & spring washers (for F04 & F05 flange)
  • Ball Valve BL3SAL-034

Note: Delivered in separate parts.


  • Port
    3/4 inch
  • Voltage
    24V DC
  • Seal
  • Housing
    Stainless steel
  • Function
    3 way
  • Operation
  • Min pres
  • Max pres
  • T/L Port
  • ISO-Top
  • Kv
  • Orifice
  • Max temp
  • Series
  • IP
  • Torque
  • Min temp


Safety instructions pdf Download save_alt
CAD zip Download save_alt
Manual AG (EN) pdf Download save_alt
Manual bl3sa (EN) pdf Download save_alt
CAD zip Download save_alt


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