What are the precautions for connecting a tube to the fitting?

Cut the tube end orthogonally. Also, check that the tube is free of dirt, detritus, or scratches. A tube cutter is recommended for cutting.

What are the precautions for using one-touch fittings in vacuum?

They are designed for use in both positive pressure and negative pressure (vacuum). However, when using a urethane tube, add an insert ring.

Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.

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GWS4-0-X

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Some of the items are scheduled to be discontinued as of end of March in 2023. The manufacturer keep the items produced but they are not available with Misumi.
There are not the replacement items and the plan to resumption of sale. Please check the quotation and order screen for details.

Flame retardant type with white body. Electroless nickel plating to the brass part

Price	Minimum Order Qty.	Number of pc(s). included in pkg.	Days to Ship	Application	Applicable Tube O.D.1 (φ)	Clean Spec.
₹ 365.68	1 Piece(s)		5 Day(s) or more	Standard Mini	4	No Clean Specifications
₹ 390.91	1 Piece(s)		5 Day(s) or more	Standard Mini	6	No Clean Specifications
₹ 395.25	1 Piece(s)		5 Day(s) or more	Standard Mini	8	No Clean Specifications
₹ 6,869.33	1 Pack(s)	10 Pieces Per Package	7 Day(s) or more	Clean circumstance	8	Preventing of Raising Dust
₹ 464.74	1 Piece(s)		5 Day(s) or more	Standard Mini	10	No Clean Specifications
₹ 608.49	1 Piece(s)		5 Day(s) or more	Standard Mini	12	No Clean Specifications

Types	One-Touch Couplings	Fitting Type	Union with same diameter	Applicable Fluids	Air
Main Body	Brass (Electroless Nickel Plating)	Gasket	Standard (NBR)	Union, Equal Dia.	Bulkhead
Operating Temperature(°C)	-10::60	Option	No	Material Limit	Without Material Limit
Ozone Resistance Specifications	No

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Question: What are the precautions for connecting a tube to the fitting?: Answer: Cut the tube end orthogonally. Also, check that the tube is free of dirt, detritus, or scratches. A tube cutter is recommended for cutting.
Question: What are the precautions for using one-touch fittings in vacuum?: Answer: They are designed for use in both positive pressure and negative pressure (vacuum). However, when using a urethane tube, add an insert ring.