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Size: 1/2" to 3/4" 
Specification: 
Before assembling, all parts should clean, without burrs and sharp edges. 
Valve's on and off should be flexible, no jam. 
After assembling, tested by water at a pressure no less than 0.6 Mpa, no leakage.
| Part |   Material  |    |    |  
| Body | Brass; Hpb 57-3; Hpb 59-1; CW617N; CW614N; DZR; Lead Free Brass |   |    |  
| Bonnet | Brass as above |   |    |  
| Ball | Brass with chrome plated |   |  Iron with chrome plated or not | 
| Stem | Brass with chrome plated or not |   |  Iron with chrome plated or not | 
| Sealing | PTFE(Teflon |   |  Plastic | 
| Handle | iron | Stainless Steel | With plastic coated | 
| Nut | iron | Stainless Steel | Brass | 
| O-Ring | NBR |   |    |  
|   Material  |  
size:1/2",3/4"
 1.Component and materials:
 2.Screw: brass
 3.Name plate: brass
 4.Handle wheel: iron
 5.Stem: brass
 6.Packing gland nut: brass
 7.Packing ring: NBR
 8.Bonnet: brass
 9.Disc: brass
 10.Seal disc: NBR
 11.Body: brass
 12.Nominal pressure: 1.6MPa
 13.Suitable medium: water and non-causticity liquid and saturated steam
 14.Working temperature: -80 ≥t≥120°C
 15.Dimensions: through 1/2 to 3/4 inches