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D4 / DA4 Series - Double Seat Mixproof Valves

Next Generation Mixproof Valve Technology: SPX FLOW D4 Series

Advanced Fluid Separation for Process Industries

The next generation of mixproof valve technology is the result of continued development from both APV and Waukesha Cherry-Burrell process technologies. Used for the reliable separation of dissimilar fluids, the D4 Series helps fulfill todays customer demands for production flexibility, increased productivity, rapid return on investment (ROI), and improved product quality across the Food & Beverage, Dairy, Personal Care and Brewing process industries.

Value and Efficiency

High Value with Low Lifecycle Costs

Tiered model range helps to increase ROI and align with customer budgets
All In standard features provide exceptional value
Reduced inventory costs with same seal kit used on multiple size ranges: DN40-DN65 (1.5-3.0) and DN80-DN100 (4.0)
Reduced CIP losses improve cost savings
Low air consumption and air supply requirements
Long housing ports ease manifold building
Integrated shaft seal flush reduces need for external piping
Replacement insert available to easily upgrade existing installations

Reliable Performance

Optimized Operation and Control

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

Cleanability and Hygienic Design

Advanced Sanitary Features

Designed to the latest hygienic standards
Standard cavity spray cleaning
Extensive cleaning of product contact seals

Valve Feature Comparison

D4 Valve Key Features

Radial seal design minimizes product loss and enhances cleanliness
Choice of seat-lifting (SL) or non-seat-lifting (NSL) actuators
Hazardous-rated options (ATEX Zone 1 or 2)

DA4 Valve Key Features

Flushing for upper/lower shaft seals and balancer
Metal orifices reduce CIP fluid consumption
Insert upgrade compatible with DA3+ housing

Shared Features in D4 & DA4

Open yoke enables leak detection and reduces heat transfer
Bolted flange for secure insert connection
Long ports for streamlined manifold assembly
Two standardized seal kit sizes for all models
Fully integrated position sensors
No compressed air needed for servicing
Balanced shaft design eliminates water hammer and supports dual flow direction
Reduced chemical and cleaning fluid losses
Large separation cavity drain port prevents cross-contamination
Flush cavity spray connection for enhanced cleaning
Lightweight valve body for easier handling

Key Applications

Food and Beverage

Soups & Sauces
Flavorings & Ingredients
Dressings, Vinegars
Soft/Fruit & Vegetable Drinks
Brewery, Wort, Wine, Distillery
Pet Food
Fats & Oils, Animal Oils
Liquid Sugar
Cereals

Personal Care and Pharmaceutical

Fluid Medicines
Extracts
Face Creams & Lotions
Perfumes
Soaps
High Purity Water
Nutritional Supplements
Hair Styling Gels & Liquids
Dyes & Alcohols

Chemical

Solvents, Paints
Adhesives
Coatings
Oils & Lubricants
Detergents
Emulsions
Fuels

D4

Dimensions mm	A	A1	B	øDa	øDi	F	H	L	L1	X*	Y*
DN
40	483	566	120	41	38	125	63	666	749	820	200
50	487	570	126	53	50	125	75	688	771	830	218
65	495	578	134	70	66	125	91	720	803	840	242
80	583	666	146	85	81	142.5	106	835	918	930	274
100	593	676	156	104	100	142.5	125	874	957	940	303
125	677	760	179	129	125	150	150	1006	1089	1030	350
150	725	793	194	154	150	150	175	1094	1162	1075	390
INCH
1.5	485	568	119	38.1	34.8	125	63	667	750	820	197
2.0	488	571	125	50.8	47.6	125	75	688	771	830	216
2.5	492	575	131	63.5	60.3	125	85.3	708.3	791.3	840	233
3.0	498	581	137	76.1	72.9	125	97.9	732.9	815.9	850	251
4.0	594	677	155	101.6	97.6	142.5	125	874	957	840	301
6.0	726	795	193	152.4	147.3	149.8	175	1095	1161	1080	391

*Minimum installation and valve insert removal dimensions

Housing Combinations

Shut-off Valves

Mixproof shut-off valves are used to keep incompatible products from mixing at pipe junctions, or to simply shut flow from an upper to lower line within a valve matrix.

Divert Valves

Mixproof divert valves are used for distributing liquid from one pipeline into two others (or vice versa)

Control Units

CU4 & CU4plus Series - Benefits

Automated control and position monitoring for reliable processing
Reduces compressed air and electrical connections
Helps reduce 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 diodes in LED panel and convenient location
Standardization - same control top used on various SPX FLOW valve lines, offers common look and controls interface
Robust design suited for NEMA6/IP67/IP69k* wash-down rating
ATEX / IECEx rated environments

CONNECTOR OPTIONS

S/O Cord Grip for hard wire (std)

M12 4-pin connector (optional)

POSITION INDICATION

CU4: 2 internal feedback sensors for valve open/valve closed position detection
CU4plus: Automatic teaching of all positions with press of single button
CU4plus: Detection of all positions (open, close, upper/lower seat lifts)

INTERFACE OPTIONS

24V DC Direct Connect

AS-i Field Bus Card

IO-Link

SOLENOID VALVES

24V DC

Select 1 (non seat lift) or 3 Solenoids (seat lift)

*IP69K compliance achieved by modification of the exhaust

8681 Control Unit - Benefits

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