Diaphragm Valves PK Saunders invented the diaphragm valve in 1928. In succeeding years have developed a range through innovation in both design and new materials technology. As a result, Saunders diaphragm valves have gained an excellent reputation worldwide for versatility and reliability in Aseptic and in Industrial applications with corrosive and abrasive media. We offer four main types of diaphragm valve, each type specifically suited to these applications. Saunders Weir Type A Diaphragm Valve (for Industrial and Corrosive duties) Saunders Straight Through Type KB Diaphragm Valve (Abrasive Duties) Saunders WFB Diaphragm Valve (for Marine & Hydrant duties) Saunders Aseptic Diaphragm Valves (for Biopharmaceutical duties)

Industrial Diaphragm Valves A, KB & WFB Types Size range - DN8 to DN 350 Pressure range - Up to 16bar Temp. range -50C to +175C Aseptic Diaphragm Valves 'A'FP Type for high purity applications. Standard 2 way design. Customised Products Customised Bio-Block solutions. Actuated Valves PLA - Linear type Actuation Accessories

Saunders Diaphragm Technology
Saunders continues to lead the diaphragm valve industry in the development and manufacture of elastomer components based on our in-house core competence in rubber and plastic technologies.

The diaphragm is the key performance component within a diaphragm valve providing leaktight shutoff downstream and to atmosphere, also, isolating the topworks form the process media. As the innovator and leader in diaphragm valves, we continuously develop our diaphragm technology and remain the only manufacturer to have front to back ownership of all aspects of polymer research and development, rubber technology, diaphragm design and production.


For those using Saunders diaphragm valves in Biopharmaceutical applications, our range of diaphragms is engineered to meet the exacting demands found within the industry. This includes batch traceability to aid the validation process, diaphragms manufactured from FDA conforming materials to meet the requirements of CFR (Code of Federal Regulations) Chapter1 Title 21, with testing and certification to USP Classes V and VI. Certificates of Conformity are also available.

Saunders Biopharm Solutions

• Size Range - Pure Performance forged valves DN8-15mm ( ¼”-1/2”)
  Forged stainless steel valves DN15-80mm (½” – 3”)
  Solid Block stainless steel valves DN100-150mm (4”-6”)
  
  The Saunders range of Investment cast Stainless steel valve bodies uses high quality materials and selective castings processes whilst providing an economical solution for the food, beverage, dairy and bioprocess industries. Stringent quality control is employed to minimize any risk of porosity and to ensure a finished product of the highest integrity
  
• Size range DN 8-DN100 ( ¼” – 4”)
• End Connections: All major international tube designations including O.D Tubing, Tri-clamp, DIN and ISO
  
  

Aseptic Diaphragm Valves

ZDL Zero Deadleg “L” pattern

• Size Range:DN8- DN100 (¼” – 4”)
• End Connections: Tri-clamp and Butt-weld end connections
• Typical Applications: WFI (Water for injection), point of use, CIP manifolds and vertical inlet/outlet piping to process equipment requiring low point drainage
  

ZDT Zero Deadleg “T” pattern

ZDT Zero Deadleg valve “T” pattern
Essential in the elimination of dead legs and designed to ease installation and validation, the Saunders Zero Deadleg “ T” pattern forging (ZDT) makes an important contribution in enhancing the integrity of critical systems. The ZDT normally features three common ports with the same bore dimensions and incorporates a valve body and tee fitting into a single solution. Key benefits in addition to the elimination of dead legs include its compact space saving design and excellent drainage characteristics to facilitate quick and effective sterilization. Importantly, the ZDT is machined from a single piece forging to eliminate welds and offer maximum structural integrity

• Size range: DN 15-50mm ( ½” – 2”)

• End Connections: Tri clamp and Butt-weld end connections. The bodies can also be included in a U bend configuration for point-of-use service

• Typical Applications: Point of use services, feeding laterals off recirculating loops and for samples points
  *Worldwide patents apply"

Close Coupled Branch Valves

The Saunders Close Coupled Branch Valve (CCBV) compliments the patented ZDT design by facilitating larger main line size options and providing the ideal solution when the main process line is at least one size larger than the valve/branch size. The unique tee construction is engineered from a machined billet enhancing structural integrity and ease of installation and validation.
Key benefits include its excellent drainage characteristics and absence of deadleg compact machined block construction.

• Size Range: DN15-DN50 (1/2” – 2”) (branch), DN20-DN100 (3/4” – 4”) (main). DN150 (6”) main line – price on application

• End Connections: 16 swg & triclamp. Please contact Crane Process Flow Technologies Ltd for other specifications

• Typical Applications: Sampling/Injection points on high purity water systems

• Size Range: DN15 – DN 100 ( ½” – 4”)
• End Connections: A wide range of end connections is available. Please contact us for the full range.
• Typical Applications: Product transfer purging, steam sterilzsation, condensate drains, CIP systems
  

Saunders Tandem Valve Selection Program
We have created electronic tools to assist our customers in the selection and orientation of these fabrications. Saunders Tandem Valve Selection Program enables engineers to select the optimum orientation to suit system requirements and produce a fully coded 3D graphic for immediate translation to valve manufacture.

• Size Range: DN 25-80mm (1”-3”)
• End Connections: Available with autoweld or hygienic clamp ends to meet system design requirements.
• Typical Applications: Diverter valves offer the ideal solution when a process line is divided into two or more process steams or when multiple lines are combined into one.
  Saunders Diverter Software Selection Program
  Suitable to run in Windows Microsoft packages, this electronic program allows our customers to select the ideal multi-port valve solution including end selection and valve arrangements and then print the selection in a 3D format

• Size Range: DN15 – DN80 (½” – 3”)
• Typical Applications: WFI Storage Vessels and Bioreactors. Sample valves, purge valves and ports can easily be incorporated as integral design options

• Size Range : DN 8- DN 80 ( ¼” – 3”)
• Typical Applications: Any application where space is a minimum , where reduced hold up areas are needed and where there is a need to facilitate ease of installation.

• Bio-Block Machined Tandem valves
• Bio-Block Integral Steam, Purge and Condensate Porting
• Bio-Block Serial Weir Option
• Bio-Block Controlled Inlet Option
• Bio-Block Chromatography Valves
  

• Hi-tech polymer materials that are lightweight and corrosion resistant and fulfil FDA requirements
• Truly autoclavable models
• Modular options
• Stainless steel and polymer options that are contoured for ease of cleaning
  These include: -
  Pure Performance Bonnet Assembly
  Black PES Performance Bonnet
  Stainless Steel Bonnet Assembly
  White Epoxy Bonnet Assembly

• Greater process control with built in overclosure stop
• Reduced risk of contamination with the “O” ring seal preventing ingress of foreign material
• Optimum sealing capability with the 4 bolt design
• Size Range : DN8 ( ¼”)
• Typical Applications: fully autoclavable up to 284 deg F
  

• Size Range: DN 15 – 80 ( ½”- 3”)
• Typical Applications: Fully autoclavable up to 284 deg F, the bonnet is also well suited to combined high temperature and corrosion environments

• Size Range: DN15- DN150 ( ½” – 6”)
• Typical Applications: fully autoclavable up to 284 deg F for maximum levels of security, suitable for Steam-in-place (SIP) & is the best option for combined high temperature conditions where a high level of corrosion resistance is needed.
  

• Size Range : DN 15- DN80 ( ½” – 3”)
• Typical Applications: operational at temperatures up to 230 deg F, suitable for Steam-in-Place (SIP),
  

• Size Range:- DN 15-DN100 ( ½” – 4”)
• Typical Applications: suitable for washing externally with semi- corrosive fluids, suitable for steam-in-place (SIP)