Investment Casting & Industrial Valves 
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Flush Bottom Valve (Stainless Steel & Carbon Steel Globe Valve)
- Nominal Diameter: DN25-DN200
- Materials: 316, CF8M, 1.4408, WCB, 304, CF8, etc.
- Pressure Rating: 150Lb
- Inspection & Testing: API 598
- Surface Treatment: Pickling, Passivation, Polishing (or as per customer request)
- Operating Temperature: ≤ 120°C
- Suitable Media: Water, Steam, Oil, Gas, Acids, Alkalis, etc.
Valve Parts
| Component | ZGICr18NiTi Series | ZGOOCr18Ni10 Series | ZG1Cr18Ni¹2M02 Ti Series | ZGOOCr17Ni14M02 Series | WCB Series |
| Body/Bonnet | ZGICr18NiTi | ZGOOCr18Ni10 | ZGICr18Ni12M02 Ti | ZGOOCr17Ni14M02 | WCB |
| Stem | ZGICr¹8NiTi | ZGO0Cr18Ni10 | ZGICr18Ni12M02 Ti | ZGO0Cr17Ni14M02 | WCB |
| Disc | ZGICr¹8NiTi | ZGOOCr18Ni10 | ZGICr18Ni12M02 Ti | ZGO0Cr17Ni¹4M02 | WCB |
| Gasket | 304+PTFE | 304+PTFE | 304+PTFE | 304+PTFE | Graphite+304 |
| Bolt | 1Cr17Ni2 | 1Cr17Ni2 | 1Cr17Ni2 | 1Cr17Ni2 | 35CrMoA |
| Nut | 1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni9Ti | 45 |
Flush Bottom Tank Valve (Disc Lowering/Disc Rising)
| DN | Top Flange | Bottom Flange | Sealed Seat | |||
| D1 | D2 | D3 | D4 | D5 | D6 | |
| 25 | 115 | 85 | 135 | 100 | 70 | 40 |
| 32 | 135 | 100 | 145 | 110 | 75 | 55 |
| 40 | 145 | 110 | 160 | 125 | 100 | 65 |
| 50 | 165 | 125 | 180 | 145 | 85 | 70 |
| 65 | 180 | 145 | 195 | 160 | 135 | 90 |
| 80 | 195 | 160 | 215 | 180 | 155 | 130 |
| 100 | 215 | 180 | 245 | 210 | 195 | 135 |
| 125 | 245 | 210 | 280 | 245 | 180 | 145 |
| 150 | 280 | 240 | 335 | 295 | 210 | 185 |
| 200 | 335 | 295 | 405 | 355 | - | - |
Investment Casting & Valve Manufacturing Since 1987
At SDPLDL, we are a trusted manufacturer specializing in precision investment casting and industrial valves for global markets. We operate our own manufacturing facility featuring over 200 sets of advanced manufacturing equipment and an in-house testing center equipped with 16-ton dynamic balancing machines. Our integrated manufacturing capabilities allow us to seamlessly produce precision investment casting valves, custom stainless steel large-diameter valves, and slurry valves under strict compliance with ISO 9001 standards.
