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CES M42X2 30S Plug

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CES M42x2 30S Plug – TN 296 hydraulic blanking plug

The CES M42x2 30S plug is a hydraulic fitting component designed for blanking the ends of hydraulic lines and other compatible connectors terminated with a nut. It utilizes a conical compression seal created during the tightening of the connection. The product belongs to the S heavy series and is intended for hose ends equipped with a corresponding M42x2 thread nut.

The blanking plug belongs to the TN 296 group of elements, referred to in English-language documentation as a Blanking Plug for Tube Ends. It is used in the hydraulic systems of agricultural, orchard, forestry, construction, and industrial machinery. A properly selected plug allows for closing the line end during assembly, repair, or modernization of the installation.

Technical parameters of the CES M42x2 30S plug

Product type: hydraulic plug for blanking line ends.
Product type: CES.
Connection size: 30S.
Design version: heavy.
Connection series: S – heavy.
Mating nut thread: M42x2.
Seal type: conical, compression during tightening.
Designation according to Ermetto: ROV 30-S.
Designation according to Rastelli-Raccordi: TS296-30S.
Designation according to Cast: 108022.1.
Designation according to Vitillo: ATME30S.1.
Type designation: TN 296.
English name: Blanking Plug for Tube Ends.
Purpose: blanking the ends of hydraulic lines terminated with a nut.

Application of the CES 30S plug in power hydraulics

The CES M42x2 30S plug is used for closing properly prepared ends of hydraulic lines. It can be used during service work, disconnecting lines from hydraulic receivers, securing unused connections, and changing the configuration of piping installations.

The product is used in the hydraulics of agricultural machinery, orchard equipment, forestry and construction equipment, and industrial installations. It works well in connections where a termination with a corresponding nut and a conical sealing surface is provided. Before use, it is necessary to confirm the compatibility of elements and the working conditions of the complete connection.

S Heavy Series – proper connection selection

The CES M42x2 plug belongs to the S heavy series, designated by the size 30S. This version is intended for use with corresponding heavy series fittings. When selecting, check not only the thread diameter and pitch but also the design of the line end and the geometry of the conical surfaces.

The S series should not be equated with the L light series. Elements of individual series may differ in dimensions and how they interact with other fittings. Proper selection is important for connection tightness and the safe operation of the hydraulic system.

Conical compression seal – operating principle

The CES plug utilizes a seal obtained by pressing appropriately matched conical surfaces. The blanking element is placed in the end of the line and then pressed using the mating nut. Tightening the connection creates a clamping force that allows the flow of the medium to be closed.

Proper sealing requires compatibility between the geometry of the plug and the end of the line. The condition of the mating surfaces is also important. Damage, contamination, or improperly selected elements can lead to leaks during installation operation.

M42x2 thread and 30S designation

The M42x2 designation specifies a metric thread with a nominal diameter of 42 mm and a pitch of 2 mm. In the case of the CES plug, this parameter refers to the mating union nut. The symbol 30S denotes a connection size belonging to the S heavy series.

When selecting a blanking plug, both the M42x2 thread and the 30S size must be taken into account. Thread compatibility does not guarantee the possibility of using the plug with every line end. It is also necessary to match the sealing surfaces and the type of mating fittings.

Catalog designations Ermetto, Rastelli-Raccordi, Cast, and Vitillo

The CES M42x2 30S plug appears in hydraulic fitting catalogs under several designations. According to Ermetto, it has the symbol ROV 30-S, according to Rastelli-Raccordi TS296-30S, according to Cast number 108022.1, and according to Vitillo designation ATME30S.1.

Catalog numbers facilitate the identification of the correct blanking plug during repair of existing hydraulic systems and when comparing fittings from different manufacturers. Before using a replacement element, compatibility of dimensions, construction, and performance parameters must be confirmed.

TN 296 hydraulic line end blanking plug

The CES plug belongs to the TN 296 group of blanking plugs, referred to as Blanking Plug for Tube Ends. These are elements designed for closing the ends of pipe lines using a properly selected connection with a nut. This solution allows for securing a free line end without the need for permanent closure by welding.

Unlike a typical plug screwed into a threaded hole, the CES blanking plug interacts with a nut located at the end of the line. Therefore, when completing an installation, a distinction must be made between a plug for line ends and plugs designed for closing holes in manifold bodies or other hydraulic components.

Securing lines during repair and modernization

When repairing a hydraulic machine, it may be necessary to disconnect a line from an actuator, manifold, or other component. A properly selected CES plug allows for closing the end of a line equipped with a compatible nut. This helps protect the line from contamination and limit the outflow of residual oil during work on a depressurized system.

The blanking plug can also be used during the reconstruction of piping installations. If the plug is to remain installed while the system is operating under pressure, the permissible parameters of the entire connection must be confirmed beforehand.

Selection of the CES M42x2 plug for a line end

Before purchasing, identify the connection series, nut size, and the geometry of the line end. For the CES 30S plug, an M42x2 thread nut is specified. You should also ensure that the conical surfaces are compatible and free of damage that could affect tightness.

When replacing a plug in an existing system, the designations ROV 30-S, TS296-30S, 108022.1, and ATME30S.1 are helpful. Using full designations reduces the risk of confusing this variant with blanking plugs of other sizes and connection series.

Installation and tightness check of the CES 30S plug

Before starting work, turn off the machine and safely depressurize the hydraulic installation. Then, clean the end of the line, check the condition of the sealing surfaces and the nut thread. The plug should be placed in the correct position and pressed using a compatible nut.

Tightening should be carried out according to the requirements of the manufacturer of the connection system used. Cone damage should not be compensated for with excessive clamping force. After installing the blanking plug and before restarting the installation, a tightness check must be performed and the permissible conditions for the completed connection must be verified.

Key features of the CES M42x2 30S plug

Intended for blanking the ends of hydraulic lines.
Mates with an M42x2 thread nut.
Connection size 30S.
Heavy version – S series.
Conical compression seal during tightening.
Ermetto designation: ROV 30-S.
Rastelli-Raccordi designation: TS296-30S.
Cast designation: 108022.1.
Vitillo designation: ATME30S.1.
Blanking plug type: TN 296.

Technical specification

Parameter	Value
Product	CES M42x2 30S Plug
Type	CES / TN 296
Nut thread	M42x2
Series	30S – heavy
Seal	Conical, compression
Ermetto designation	ROV 30-S
Rastelli-Raccordi designation	TS296-30S
Cast designation	108022.1
Vitillo designation	ATME30S.1
English name	Blanking Plug for Tube Ends
Purpose	Blanking of hydraulic line ends

Frequently Asked Questions (FAQ)

What is the CES M42x2 30S plug used for?

The plug is intended for blanking the ends of hydraulic lines and compatible connectors terminated with a nut. The seal is achieved by pressing the conical surfaces.