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code 61 flange pressure rating SAE

Date:May 25, 2019


Flange connections conforming to this part of ISO 6162 shall be subjected to the burst and cyclic endurance tests specified in ISO 19879 to verify that they meet the specified pressure/temperature requirements.


Flange connections conforming to this part of ISO 6162 and made of carbon steel shall be suitable for use at the working pressures given in Tables 1 and 2 when used at temperatures between -40 °C and +120 °C. Flange connections conforming to this part of ISO 6162 shall not be assembled at temperatures lower than -20 °C.


working pressure of code 61 flange pressure rating


Table 1 — Dimensions, torques and maximum working pressures for type 1 flange assemblies for use with metric screws Dimensions in millimetres unless noted Nominal size DNa d1 d2 O-ring size codeb Flat washerc (recommended) Type 1 – metric screws of property class 10.9 Maximum working pressure Minimum burst pressure d3 Screw threadd l1 Screw lengthe l2 Min. full thread Screw torquef N·m +0 –1,5 max. +10 % −0 MPa (bar) MPa (bar) 


13 13,0 13,0 210 M8 M8 25 16 32 35 (350) 140 (1 400) 

19 19,2 19,2 214 M10 M10 30 18 70 35 (350) 140 (1 400) 

25 25,6 25,6 219 M10 M10 30 18 70 32 (320) 128 (1 280) 

32 32,0 32,0 222 M10c M10 30 18 70 28 (280) 112 (1 120) 

38 38,2 38,2 225 M12 M12 35 23 130 21 (210) 84 (840) 

51 51,0 51,0 228 M12 M12 35 23 130 21 (210) 84 (840) 

64 63,5 63,5 232 M12 M12 40 23 130 17,5 (175) 70 (700) 

76 76,2 76,2 237 M16 M16 50 30 295 16 (160) 64 (640) 

89 89,0 89,0 241 M16 M16 50 30 295 3,5 (35) 14 (140) 

102 101,6 101,6 245 M16 M16 50 30 295 3,5 (35) 14 (140) 

127 127,0 127,0 253 M16 M16 55 30 295 3,5 (35) 14 (140)



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