Basic standard:

API 6D, ASME B16.34, BS5351, API 608, MSS SP-72

Flange connection dimesion:

ASME B16.5, DIN2501

Butt welding connection dimension:

ASME B16.25

Face-to-face dimension:

ASME B16.10, API 6D, EN558

Pressure-Temperature rating:

ASME B16.34

Test:

API 6D, API 598, BS 6755, API 607

Size: 

1/2" ~ 12"

Rating: 

ANSI 150lb-600lbs

Body Materials:

Carbon steel, Stainless steel

Trim: 

A105+ENP, 13Cr, F304, F316 etc.

Operation:

Wrench/Lever, Gear, Pneumatic operator