Pigging stations


General Technical Information


Pig inline station

Application

Suitable as launching and receiving station. During production and cleaning process the pig stays in the inline station and is circulated around by the product or cleaned with the system. For the pigging process the inline flap is switched about 90° and the Nocado pig is taken in flow direction by the following medium. The station is laid out for automatic operation, but can also be manually switched by handle.

Features

• Extremely reliable in operation
• Compact
• Use of Nocado standard gaskets
• Horizontal or vertical installation
• CIP- and SIP-compatible, pig included
• Can be combined with components of the Nocado product lines
• The pig position within the inline station is detected by two independent pig sensors (waiting and operating position)
• Modified self-centring unions compatible to DIN 11851
Design

Nominal sizes: DN 25 to DN 100
• Manual, pneumatic or electromotive actu - ation
• 0°-90°-180° actuation for special functions
• Eccentric outlet for residual draining at hori - zontal installation
• Pre-assembled components through combination of components of the Nocado product lines
• Material AISI 304 or 316 L, other materials on request
• Gaskets according to FDA directive in Silicone, EPDM and HBNR

Planning instructions

Inline stations are used when the pig shall stay in the plant during various production and cleaning cycles.

Usually the pig travels back automatically. When separating two similar products the inline station is primarily used as catching station. As the pig is not taken out during cleaning and sterilization, the inline station is particularly used with microbiological sensitive products of the food, beverages and cosmetics industry.

The inline station is not suitable for very fibrous products (e.g. sausage meat).
Pig launching and receiving station

Application

For launching and/or removal of the pig. In manual product recovery systems or as addition to automatic pigging systems.

Features

• Extremely reliable in operation
• Low costs
• For manual or semi-automatic operation
• Smooth surfaces, easy cleaning
• Compact
• Use of standard gaskets
• Horizontal or vertical installation
• Can be combined with components of the Nocado product lines

Design

Nominal sizes: DN 25 to DN 100
• Pre-assembled components according to customer's specification
• Material AISI 304 or 316 L, other materials on request
• Gaskets according to FDA directive in Silicone, EPDM and HBNR

Planning instructions

The product is let out in front of the pig launching and receiving station via T-piece, which can be closed by a valve. The launching and receiving station is preferably connected with a hygienic Nocado ball valve with rinsing connection to the piggable pipe. Particularly in connection with inline stations the plant can be designed in the way, that during automatic operation - instead of launching and receiving station - a bend is mounted and the launching and receiving station is only installed, when the pig is launched or removed.

Pig stopper

Application

When a pig shall be stopped in a pipeline, e.g. at the entrance of a machine or a non-piggable fitting and shall be returned immediately afterwards.

Features

• Simple design, reliable in operation
• Smooth surfaces, convenient in flow
• Hygienic
• Limited suitability for fibrous products
• Can be combined with components of the Nocado product lines


Design

Nominal sizes from DN 25 to DN 100 for pipelines according to DIN 11850
• Pre-assembled components according to customer's specification
• Material AISI 304 or 316 L, other materials on request

Planning instructions

The pig stopper is not designed symmetrically to ensure preferably optimum CIP-cleaning. On highly viscous products, particularly at low flow rates, it can be necessary to change the flow direction during cleaning to obtain satisfying CIPcleaning. If this is not possible due to reasons of process engineering, the driving and relief connections can be designed as rinsing nozzles, if necessary. Maybe separate rinsing nozzles must be provided.

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