First, the design and manufacturing standards: ● design and manufacture: GB / T12223-89 ● welding Size: JB / T 1751-75 ● Structure length: GB12221 ● test and experiment: GB / T13927 Second, the main part material: Part name Stem , bonnet, bolts stem, the valve seal packing washer handle J61Y-170V chrome-nickel stainless steel polytetramethylene oxide ethylene, flexible graphite asbestos rubber quality carbon steel Third, the main performance specifications: Model Nominal pressure (Mpa) test pressure PS (MPs) Working Pressure (Mpa) working temperature (℃) Applicable medium Shell Seal (liquid) sealed (gas) J61Y-170V 24.0 7.0 17.6 0.6 17.0 V≤570 ℃ power plants, petroleum, water, oil and other FJ61Y -160p 24.0 16.0 17.6 0.6 16.0 P≤200 ℃ T61Y-320 24.0 16.0 17.6 0.6 16.0 C≤200 ℃ Fourth, the main external and connecting dimensions: (mm) nominal diameter DN (mm) pipe thread size Weight (Kg) Do LH Hi d 6 3/4 80 78 100 110 6 1.20 10 1 80 120 100 110 8 1.50 15 11/4 100 130 120 130 12 1.70 20 2 12000 145 150 165 15 2.60