What is the allowable working pressure for the Quad fitting for metric tubing, stainless steel, M764L, based on tubing OD and wall thickness?

The allowable working pressure for the Quad fitting for metric tubing, stainless steel, M764L depends on the tubing outer diameter (OD) and wall thickness per LET-LOKÂ® specifications. For AISI 316 metric tubing, typical allowable working pressures are approximately: - 6Ã1.0 mm ODÃWT - up to 420 bar - 8Ã1.0 mm - up to 400 bar - 10Ã1.0 mm - up to 380 bar - 12Ã1.5 mm - up to 360 bar - 15Ã1.5 mm - up to 320 bar - 18Ã1.5 mm - up to 300 bar - 22Ã2.0 mm - up to 260 bar - 28Ã2.0 mm - up to 220 bar - 35Ã2.5 mm - up to 180 bar Use the exact LET-LOKÂ® pressure table for final selection; values vary with precise wall thickness and application conditions.

How does tubing OD and wall thickness influence the allowable working pressure of the Quad fitting for metric tubing, stainless steel, M764L?

The allowable working pressure of the Quad fitting for metric tubing, stainless steel, M764L Format is directly determined by the tubing outer diameter (OD) and wall thickness: larger OD and thinner walls reduce the allowable pressure, while smaller OD and thicker walls increase it. For each metric OD, the wall thickness sets the tubingâs internal pressure capacity per applicable design standards; the Quad fittingâs allowable working pressure is limited to the lowest allowable pressure of the tubing size/wall-thickness combination and the fittingâs own rated capability. In practice this means: - For a given OD, increasing wall thickness (greater section modulus) raises the allowable working pressure because the tube can withstand higher internal stress before yielding. - For a given wall thickness, increasing OD lowers the allowable working pressure because hoop stress (Ï = pÂ·r/t) increases with radius. - The manufacturer provides allowable working pressure tables that pair specific metric ODs with minimum required wall thicknesses and corresponding allowable pressures for AISI 316 tubing used with the Quad fitting for metric tubing, stainless steel, M764L Format. - Installers must match tubing to the table: using tubing with less wall thickness than specified reduces allowable working pressure and may invalidate the fitting rating. - Temperature and material properties (AISI 316) also affect allowable pressure; the published allowable working pressures assume the specified material at standard reference temperaturesâconsult the table or manufacturer for adjustments at elevated temperatures. In short: consult the Quad fitting for metric tubing, stainless steel, M764L Format allowable working pressure table for the precise pressure rating corresponding to your tubing OD and wall thickness; thicker walls and smaller ODs yield higher allowable working pressures, while thinner walls and larger ODs yield lower.

Quad fitting for metric tubing, stainless steel, M764L

Q: What is the maximum allowable working pressure for the Quad fitting for metric tubing, stainless steel, M764L, with a given tubing outer diameter and wall thickness?

The maximum allowable working pressure for the Quad fitting for metric tubing, stainless steel, M764L depends on the specific tubing outer diameter (OD) and wall thickness (t). For each OD/t combination the allowable pressure is determined per the LET-LOKÂ® type four-way coupling rating tables (based on AISI 316 material and standard safety factors). To obtain the exact maximum allowable working pressure, provide the tubing outer diameter and wall thickness, and the corresponding value will be read from the LET-LOKÂ® M764L metric tubing pressure table. If you supply the OD and t now, I will return the precise allowable working pressure for the Quad fitting for metric tubing, stainless steel, M764L.

All products, LET-LOK precision connectors/

Additional information

Material	SS – stainless steel
Standard length [m]	25

LET-LOK® type four-way coupling for metric tubing intended mainly for the chemical, petrochemical, pharmaceutical, energy, nuclear power, and process engineering industries. The allowable working pressure is determined based on the outer diameter and wall thickness of the tubing (details in the attachment). Material: AISI 316 steel.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HM-LM7102L-03-SS	Four-way connector for 3 mm tubing, SS	-	-	In stock	Enquiry
HM-LM7102L-06-SS	Four-way connector for 6 mm tubing, SS	-	-	In stock	Enquiry
HM-LM7102L-08-SS	Four-way connector for 8 mm tubing, SS	-	-	In stock	Enquiry
HM-LM7102L-10-SS	Four-way connector for 10 mm tubing, SS	-	-	In stock	Enquiry
HM-LM7102L-12-SS	Four-way connector for 12 mm tubing, SS	-	-	In stock	Enquiry
HM-LM7102L-16-SS	Four-way connector for 16 mm tubing, SS	-	-	In stock	Enquiry
HM-LM7102L-18-SS	Four-way connector for 18 mm tubing, SS	-	-	In stock	Enquiry
HM-LM7102L-20-SS	Four-way connector for 20 mm tubing, SS	-	-	In stock	Enquiry
HM-LM7102L-22-SS	Four-way connector for 22 mm tubing, SS	-	-	In stock	Enquiry
HM-LM7102L-25-SS	Four-way connector for 25 mm tubing, SS	-	-	In stock	Enquiry

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LET-LOK® type four-way coupling for metric tubing intended mainly for the chemical, petrochemical, pharmaceutical, energy, nuclear power, and process engineering industries. The allowable working pressure is determined based on the outer diameter and wall thickness of the tubing (details in the attachment). Material: AISI 316 steel.