SPXFLOW
PRODUCTS BRANDS SOLUTIONS Industries Service & Support About
Search Blog Careers News Events Partner Portal IconPartner Portal
BacktoMain
Brands
Anhydro
APV
Bolting Systems
Bran+Luebbe
Gerstenberg Schrӧder
Hytec
Johnson Pump
Johnson Pump Marine
Lightnin
Philadelphia
Plenty
Power Team
Seital Separation
SPX Rail Systems
Stelzer
Stone
Tigerholm
Uutechnic
Waukesha Cherry-Burrell
BacktoMain
Solutions
Automation
Heat Transfer
Homogenization
Hydraulic Technologies
Membrane FIltration
Mixing & Blending
Separation
Thermal Processing UHT
Back to Main
Industries
Aerospace
Chemical
Dairy
Fats & Oils
Food & Beverage
Oil and Gas
Personal Care
Pharmaceutical
Water and Wastewater Treatment
Horticulture
Agriculture / Aquaculture
Automotive
Construction
Defense & Military
Electric Vehicle
HVAC
Mining
Plumbing
Power & Energy
Pulp & Paper
Rail
Recreational Marine
Shipbuilding
BacktoMain
About
  • Our Company
  • Sustainability
  • Leadership
BacktoMain
Products
BY TYPE
BY BRAND
BY APPLICATION
BY INDUSTRY
  • Analyzers
  • Automation Systems
  • Butter Equipment
  • Centrifuges
  • Cleaning-in-Place Systems
  • Controlled Bolting
  • Deareators
  • Draught Regulators
  • Dryers
  • Evaporators
  • Fat Crystalization Equipment
  • Filters & Strainers
  • Heat Exchangers
  • Homogenizers
  • Membrane Filtration Systems
  • Microparticulation Systems
  • Mixers & Agitators
  • Pigging Systems
  • Plumbing Products
  • Pumps
  • Recreational Marine Products
  • Spin Flash Dryers
  • Spray Dryers
  • UHT Systems
  • Valves
  • Anhydro
  • APV
  • Bolting Systems
  • Bran+Luebbe
  • Gerstenberg Schrӧder
  • Hytec
  • Johnson Pump
  • Johnson Pump Marine
  • Lightnin
  • Philadelphia
  • Plenty
  • Power Team
  • Seital Separation
  • SPX Rail Systems
  • Stelzer
  • Stone
  • Tigerholm
  • Uutechnic
  • Waukesha Cherry-Burrell
  • Adhesives & Sealants
  • Automotive Heating System
  • Baby Food
  • Bakery Filing Cream
  • Beer, Cider, Wine & Spirits
  • Boats & Watercraft
  • Building Infrastructure
  • Butter & Spreads
  • Cement
  • Cheese
  • Chocolate
  • Coffee & Tea
  • Condiments, Sauces & Soups
  • Cosmetics
  • Dairy Powders
  • Flavors & Fragrances
  • Fruit Juice
  • Fuel Supply System
  • Hair, Nail & Skin Care Products
  • Ice Cream
  • Inorganic Chemicals
  • Margarine & Shortening
  • Meat & Animal-Based Proteins
  • Milk & Cream
  • Neutralization
  • Nutraceuticals
  • Oral Care
  • Paints & Coatings
  • Petrochemicals
  • Pipelines
  • Plant-Based Food & Beverages
  • Plastic & Resins
  • Refinery
  • Soft Drinks
  • Solvents & Solutions
  • Specialty Chemicals
  • Synthetic Rubber
  • Yogurt
  • Aerospace
  • Chemical
  • Dairy
  • Fats & Oils
  • Food & Beverage
  • Oil and Gas
  • Personal Care
  • Pharmaceutical
  • Water and Wastewater Treatment
  • Horticulture
  • Agriculture / Aquaculture
  • Automotive
  • Construction
  • Defense & Military
  • Electric Vehicle
  • HVAC
  • Mining
  • Plumbing
  • Power & Energy
  • Pulp & Paper
  • Rail
  • Recreational Marine
  • Shipbuilding
BacktoMain
Service & Suport
APV Aftermarket & Service
  • APV Aftermarket Test Page
APV Plate Heat Exchanger Services
APV Valve Aftermarket & Service
APV Homogenizer Services
WCB Aftermarket & Service

SD4 Series - Double Seal Valves

Product Type(s) : Double Seal Valves
Description :

SD4 valves are (double seal) safe flow valves designed for safe media separation applications in the food, beverage, dairy, pharmaceutical and chemical industries. It is available as a shut-off, change-over and tank bottom valve. 

WHERE TO BUY

FEATURES

DELTA SD4 valves are (double seal) safe flow valves designed for safe media separation applications in the food, beverage, dairy, pharmaceutical and chemical industries. It is available as a shut-off, change-over and tank bottom valve. Other configurations are available on request. The DELTA SD4 valve is available as a shut-off valve in 4 standard housing configurations. Other configurations are available on request.

Advantages

  • Leakage chamber arranged between the seat seals; the leakage chamber being forcibly closed (open valve) by the two leakage discharge valves (NO) or opened to the atmosphere (closed valve).
  • Excellent hygienic characteristics primarily due to the ball-shaped housing without sump or dome.
  • Profile seat seals providing crevice-free sealing and the compression of the seat seals is controlled by a metallic stop.
  • Leakage discharge valves to drain the neutral area between the seat seals. The leakage discharge valves (activated together with main actuator) are also used as flush - enabling CIP and SIP cleaning of the neutral area.
  • Actuator and control unit are standard parts from the SW4 product line. Additionally, a NOT element is fitted to the control unit as standard enabling to maintain higher line pressures.
Theory of Operation

How does the SD4 Double Seal valve work with leakage chamber ?


 

SD4 valves are used for safe separation of incompatible media. Safe media separation is provided by the two seat seal design.

A ring-shaped leakage chamber is arranged between the two seals. It is forcible closed or opened to the atmosphere by the two leakage discharge valves.

In case seat seal damage, the leakage will be drained through the leakage valves to the atmosphere and indicated.

  1. Control Unit
  2. Pneumatic Actuator
  3. Yoke
  4. Seat seals
  5. Leakage/CIP discharge valve

 

Cleaning of the leakage chamber is undertaken via the leakage valves. The cleaning liquid is supplied via one leakage valve and discharged to the atmosphere via the second one.

The directed flow of the cleaning liquid provides for a perfect cleaning of the whole leakage chamber.

  1. CIP in
  2. CIP out

Product Specifications

  • Specifications
  • Dimensions
  • Options
  • Performance

Sizes:  1" - 4" / DN25 - DN100 Product Wetted Parts: AISI 316L / 1.4404 Non-Product Wetted Parts:  AISI 304 / 1.4301 Seal Materials: 

  • Standard EPDM
  • Optional: HNBR, FPM

Min. Control Air Pressure: 87 PSI (6 bar) Max. Control Air Pressure: 116 PSI (8 bar)

SD4 Series Double Seal Valve Dimensions

View SD4 Series Double Seal Valve Dimensions in the Operation and instruction Manual

Valve configurations*:

Standard shut-off:  DELTA SD4

Aseptic diaphragm valve:  DELTA SDMS4

Change-over valve:  DELTA SDU4

Tank outlet:  DELTA SDT4

*Combinations of the configurations listed are also available, e.g. aseptic tank outlet version (DELTA SDTMS4) and aseptic change-over valves (DELTA SDMSU4).

Pressure Ratings:

Operating Pressure:  Maximum line pressure: 145 psi (10 bar)

Temperature Ratings:

Operating temperature: Maximum  275ºF (135°C),  Short time 284ºF (140ºC) - no steam

VIDEOS

SD4 Double Seal Valve Maintenance Procedures - English

SD4 Double Seal Valve Maintenance Procedures - Chinese

DELTA SD4 Double Seal Valves - Open and Closed Positions

DELTA SD4 Double Seal Valves - NOT Element

DELTA SD4 Double Seal Valve - Cleaning in Open Position

DELTA SD4 Double Seal Valve Cleaning the Leakage Chamber

Mix Proof Valve Manifold Demonstration

Valve DELTA SD4 Double Seal Maintenance

Downloads

SD4 Double Seal Valve Maintenance Procedures - English

SD4 Double Seal Valve Maintenance Procedures - Chinese

SD4 Double Seal Valve Operation Animations

Anhydro APV Bolting Systems Bran+Luebbe Gerstenberg Schrӧder
Hytec Johnson Pump Johnson Pump Marine Lightnin Philadelphia
Plenty Power Team Seital Separation SPX Rail Systems Stelzer
Stone Tigerholm Uutechnic Waukesha Cherry-Burrell
Events Careers Investors Terms of Use
Data Privacy Terms & Conditions Disclosure Statements