Reliable Performance 

The D4 has the following features standard: 

  • Fully balanced design helps to prevent hydraulic blocking, withstand pressure spikes, and enables flexible flow direction without slamming
  • Light overall weight helps support handling without lifting tools 
  • Slim stainless actuator is fully enclosed to prevent fluid ingress 
  • Range of control units and bus communication for automated operation 
  • No compressed air needed for removal and servicing 




  • OD Tube: 1.5"- 6" 
  • Schedule 5 Pipe: 2"-6" 
  • Others on request

Product Wetted Parts: 1.4404/AISI 316L 

Non Product Wetted Parts: AISI 304/1.4301 

Seal Materials: 

  • Standard EPDM 
  • Optional: HNBR, FKM

Surface Finish: 

  • Product Contact: 32 Ra
  • Non-Product Contact: Glass beaded 

Required Air Pressure: 73 psi 



Pressure Ratings: 

  • Operating Pressure: 145 PSI (10 bar) maximum line pressure 

Maximum Temperature: 

  • EPDM & HNR: 275 F/135 C (intermittent) 
  • FPM: 275 F/135 C 

Sterilization Temperature: 

  • EPDM & HNBR: 284 F/140 C


Control Units 

CU4 & CU4+ Series 

  • Automated control and position monitoring for reliable processing
  • Reduces compressed air and electrical connections 
  • Helps reduced external solenoid valve cabinets
  • Accelerates valve response time 
  • Innovative seat lift detection is fully integrated without need for external sensor wiring to provide additional position monitoring 
  • Reliability and long service life- robust clamp connection, reinforced stainless steel air coupling threads to avoid air leakages, and water tight seals 
  • Ease of operation- contains manual override solenoids and adjustment screw to throttle air flow to actuator to ensure optimal opening and closing 
  • Clarity- clear and bright indication of valve position- 5 dioes in LED panel and convenient location 
  • Standardization- same control top used on other SPXFlow valves lines 
  • NEMA 6 washdown rating 


Burkert 8681 Control Unit

  • Contact free position sensor including (3) programmable feedback signals 
  • Positions easily taught via intuitive push buttons or Autotune feature to ensure quick & easy set-up
  • Ultra-bright 360° visual LED position indication with adjustable red, yellow, & green color assignments provide clarity from all points of view and avoid confusion
  • Manual override and air throttle adjustable solenoids to assist start-up, maintenance, and troubleshooting
  • Up to IP69K washdown rating available (IP65/67 as standard) for high washdown environments
  • Built-in microcontroller tracks cycles and alerts operator when preventive maintenance is required
  • Simple and robust stainless steel adapter & chemically resistant polycarbonate head
  • Supplied by industry leading Burkert Fluid Controls