Class 300 Bronze Gate Valves Block Pattern 

• Union Bonnet 

• Non-Rising Stem 

• Alloy Solid Wedge 300 PSI/20.7 bar saturated steam to 421° F/216° C 600 PSI/41.4 bar non-shock cold working pressure CONFORMS TO MSS SP-80 

T-176-SS T-176-A Threaded T-176-SS NPT x NPT with Stainless Steel Seats 

MATERIAL LIST PART SPECIFICATION 

1. Handwheel Nut 300 Series Stainless Steel 

2. Identification Plate Aluminum 

3. Handwheel Malleable Iron ASTM A 47 Silicon Bronze ASTM B 371 

4. Stem Alloy C69400/C69430 or ASTM B 99 Alloy C65100 

5. Packing Nut Bronze ASTM B 62 or ASTM B124 Alloy C37700 or Alloy C36000 

6. Packing Gland Bronze ASTM B 62 or ASTM B124 Brass ASTM B16 C36000 

7. Packing Aramid Fibers with Graphite 

8. Stuffing Box Bronze ASTM B 61 

9. Bonnet Bronze ASTM B 61 

10. Union Nut Bronze ASTM B 61 

11. Body Bronze ASTM B 61 

12. Wedge T-176-SS Bronze ASTM B 61 T-176-A Copper Nickel Alloy T-176-SS Stainless Steel Type 410 

13. Seats ASTM A 276 Alloy 541000 T-176-A Integral with Body