Valves

De Dietrich carries a comprehensive range of valves fit for our glass and glass-lined vessels and pipe as well as our filtration and drying equipment. Our valves carry numerous purposes, including regulation of process flow, emptying, introduction, and sampling.

Most of our valves are available in manual or pneumatic versions and can be fitted with temperature measurement sensors, measurement electrodes and other accessories.

Types of valves manufactured by DDPS include:

Glass-Lined Clean Valve

Glass-Lined Flush Bottom Outlet

Ceramic Plug Valves

Glass Valves

Sampling Valves

Side Discharge Valves

Easy Clean Side Discharge Valves

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Glass-Lined Clean Valve

Clean Valve Product Description

The Clean Valve is a bottom flush valve designed for use on glass-lined reactors.  This easy-to-operate, easy-to-clean, self-draining valve allows for a variety of functions without the need to interrupt the process and without dismantling the valve.

Clean Valve Applications

Clean Valve is ideal to use in any process where batch to batch cleanability is important. 

Clean Valve Features

The glass-lined steel design of the Clean Valve ensures no metal contamination of the process fluid and enables use across a wide temperature and pressure range. The Clean Valve has been designed with the most rigorous cleaning operations in mind. The valve seat seals against the bottom outlet nozzle to prevent any collection or build-up of materials in the annular area between the valve seat and nozzle wall. An additional port with a 5º downward sloping angle has been built into the valve to facilitate cleaning of the internal components and body.  The Clean Valve is able to accommodate an RT or TC sensor at the lowest point in the vessel for a more accurate and reliable temperature measurement.

A - Lip seal valve seat design prevents material getting between the seat and the bottom outlet nozzle

B - Additional side nozzle for cleaning lance or other purposes (e.g. sampling, gas dispersion)

C - Chevron packing with o-rings for seal and cleanability in place of difficult-to-clean bellows

D - Glass-lined steel valve body designed to drain completely

E - UniTIP® glass-lined head and stem with temperature sensor that can be replaced without having to remove the valve from service

Options

• Available in manual, actuated in-line and actuated low profile types (shown above - F)

Clean Valve Demonstration Video

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Glass-Lined Flush Bottom Outlet Valves

Flush Bottom Outlet Valves Features

All DDPS glass-lined valves are made of cast steel coated with our standard 3009 Glass enamel identical to the reactors on which they are installed.  Wetted parts feature the same characteristics of all other glass-lined equipment including resistance to corrosion, thermal and mechanical shock.  All other parts in contact with the process are made of fluoropolymer (PTFE, PFA).

Flush Bottom Outlet Valves Specifications

Our glass-lined flush bottom outlet valves are available for the following fittings:

• PN16,
• ANSI 150
• JIS 10K
  

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Ceramic Plug Valves

Ceramic Plug Valves Product Description

Unlike PTFE-lined plug valves, our chemical ceramic lining adds assurance and durability to virtually any process, providing maximum corrosion resistance, longer valve life and less chance of leaks.

Ceramic Plug Valve Applications

The heavy duty design of our ceramic plug valve is ideal for even the most difficult CPI applications.

Ceramic Plug Valve Features

The key feature of our ceramic plug valves is 3/8" chemical ceramic internals, highly polished to avoid friction.  The valve is encased in a tough, ductile iron armor which is coated with corrosion resistant paint.

Ceramic Plug Valve Advantages

• The easy open design allows top acess for quick and simple seat replacement.
• Superior corrosion resistant ceramic lining eliminates pinholing, peeling, permeation, and plug swelling
• Liner collapse in vacuum service is also eliminated.

Ceramic Plug Valve Specifications

• Sizes from 3/4" to 6"
• Pressures up to 200 psig (13.3 bar)
  
• Temperatures up to 300ºF (150ºC)

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Glass Valves

For reaction units constructed around QVF glass reactors or special reactors from the VERI range, we use a DN40 glass valve in which the PTFE piston is directly applied without a seat to the enameled reactor flange.



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Sampling Valves

See the sampling section for more information on our sampling valves.

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Side Discharge Valves

Side Discharge Valve Features

• Metal-to-Metal Seal
• Rotary Screw Drive
• Pressure Capabilities
• Hinge
• Monorail
• Hydraulic Actuation
• Threaded spindle locking concept
  

Side Discharge Valve Advantages

• Metal-to-metal sealing principle ensures long life of the product.  
• Does not require hydraulic pressure to stay closed.
• Easy maintenance for both vessel and plug side.

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Easy Clean Side Discharge Valves

Easy Clean Side Discharge Valve Product Description

Clean Seal, the new Rosenmund side discharge valve, is designed with a sealing system that eliminates contact between metallic sealing seats and products to be discharged.

Easy Clean Side Discharge Valve Features

• Sealing ring squeezed in the valve seat
• Sealing surface not plated
• Blowing/CIP nozzles to clean the sealing surface

Easy Clean Side Discharge Valve Advantages

• No problem anymore with leaky side discharge valves
• Can be retrofitted on existing machines
• Rosenmund standard design can be kept
• Self adjustment of the metallic sealing
• cGMP design with minimized dead space
• No manual cleaning of the seats is needed (gain of time, safety and product quality
  

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