What is a flexolet?

What is a flexolet?

Flexolet reduces the number of fitting sizes per outlet made possible by the revisions to the MSS specification.

 

Flexolet is used widely abroad in recent years, It is used to connect the reinforced fittings. It takes place of traditional connecting ways. The body of Flexolet Threaded is made in excellent Forgings.

Type of Olets	flexolet
Size	1/8″ (6 NB) to 20″ (500NB)
Standard	MSS SP-97
Class	3000LB（SCH40，SCH80，STD，XS） 6000LB（SCH160，XXS）
Material	Grade
Carbon Steel	ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70
Stainless Steel	ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L
Alloy Steel	ASTM / ASME A/SA 182 F12, A182 F11, A182 F22, A182 F5, A350 LF2, A350 LF3

What is the difference between weldolet and flexolet?

All Weldolets are Flexolets but not all Flexolets are Weldolets in the same way that all dogs are animals but not all animals are dogs.

The Flexolet and the Weldolet products are our two branch connection designs. They perform the same function, which is that they reinforce the strength lost when a hole is cut into the header pipe and they connect the header pipe to the branch pipe. The difference in designs is that the Weldolet® has a tapered bore while the Flexolet has a straight-through bore. See below:

The tapered bore provides a better transition (reduces the flow resistance) and it also provides a lower stress intensification factor, which results in less stress on the welds and longer fatigue life. The straight-through bore decreases the diameter of the part and allows for larger run-size consolidations (meaning you can use them on a wider range of header pipe diameters). Because of the smaller size of the straight-through bore, the Flexolet tends to be less expensive as compared to the Weldolet.

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