Recommendation of Torque for Tightening Fittings

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Recommendation of Torque for Tightening Fittings
Fitting Thread Size	Torque, lb-ft	Torque, kgf/cm
10-32, M5 �M6	1.0 -1.5	14 �21
NPT1/8, R1/8	5 -6.5	70 -90
NPT1/4, R1/4	8.5 -10	120 -140
NPT3/8, R3/8	16 -17.5	220 -240
NPT1/2, R1/2	20 -21.5	280 -300

Push-In Fitting Installation Procedure and Specifications:

A. Installation of Pipe Fittings:

1. Tighten fitting by hand, then turn it 2-3 turns with a wrench until it reaches the desire torque listed. If the fitting is not pre-coated with sealant, or is used and the sealant is not in good condition, apply Teflon sealant tape to the threads.

B. Installation of Tubing into Fitting:

1. Slowly push a clean and perpendicularly cut tubing into the fitting until it comes to a dead stop.

2. Pull the tubing back gently until the Grip Ring or Collet of the fitting grips onto the tubing and has a good seal.

3. Use Polyethylene, Polypropylene, Polyurethane or Nylon Tubing designed for instant fittings.
4. Hard metal tubing can be used for all metal Stainless Steel and all Brass fittings if the tubing is pre-grooved.

C. Removal of Tubing from Fitting:

1. Push in evenly on the two long oval sides of the Release Button.

2. Pull out the tube while depressing the Release Button.

3. To reuse the tubing, cut off the lodged portion of the previously used tubing in an even and perpendicular fashion.

D. Recommended Tubing Material, Size and Hardness

Tubing Material	Specified Size	Hardness (Durometer)
Polyurethane	+/- 0.006� (+/-0.15 mm)	Shore A 85 or higher
Polyethylene	+/- 0.004� (+/-0.1 mm)	Shore D 44 or higher
Polypropylene	+/- 0.004� (+/-0.1 mm)	Shore D 44 or higher
Nylon	+/- 0.004� (+/-0.1 mm)	Shore D 44 or higher
Pre-grooved Metal Tubing	+/- 0.004� (+/-0.1 mm)

E. Specifications, Materials of Construction and Schematic of Typical Construction:

	Composite Push-In Air Fittings		Stainless Steel Fittings	Nickel-Plated Brass Fittings
	(Standard-Purple Button)	(K Series-Black Button)
Maximum Operating Pressure	150 PSI @ 72 �F	180 PSI @ 72 �F	250 PSI @ 72 �F	250 PSI @ 72 �F
Vacuum	0 - 29.5 in Hg (750 mm Hg)		0 - 30 in Hg (760 mm) Hg	0 - 30 in Hg (760 mm) Hg
Operating Temperature	32 - 140 �F (0 - 60 �C)		5 - 230 �F (-15 to 110 �C)	5 - 230 �F (-15 to 110 �C)
Recommended Tubing Material	Polyurethane, Nylon, Polyethylene, Polypropylene		Polyurethane, Nylon, Polyethylene, Polypropylene, and Hard metal tubing (tubing must be pre-grooved)
Metal Body	Brass, Nickel Plated		316 Stainless Steel	Nickel-Plated Brass
Plastic Body	PBT (Polybutylene terephthalate)		None	None
Release Button	POM (Poly oxy methylene copolymer)		316 Stainless Steel	Nickel-Plated Brass
Grip Ring or Collet	300 series Stainless Steel Grip Ring		316 Stainless Steel Collet	Nickel-Plated Brass Collet
O-ring	NBR (Buna-N)		VITON	NBR (Buna-N)
Thread Sealant	Teflon		None	Teflon
Service	FOR AIR ONLY		Air, Liquid	Air, Liquid

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Sizto Tech Corporation 892 Commercial Street, Palo Alto, CA 94303 USA
To order or locate a stocking distributor in your area, call 650-856 8833, Fax to 650- 856 8811, Toll Free: 866-9620170, or email Sales@StcValve.com
Copyright � 2001-2016 Sizto Tech Corporation, USA, All rights reserved. Last modified: June 15, 2016, Information contained herein may be changed without prior notification