Hy-Lok SVH2MF-8N-S316 High-Pressure Needle Valve
Engineered for precision and durability, the Hy-Lok SVH2MF-8N-S316 needle valve is designed to provide safe and reliable shutoff in high-pressure systems up to 6,000 psig. Constructed from corrosion-resistant 316 stainless steel, this valve features a straight pattern body with 1/2" male NPT × 1/2" female NPT end connections, making it ideal for instrumentation, chemical processing, and fluid handling applications. With PTFE or optional Grafoil packing, it supports a wide operating temperature range and ensures leak-tight performance in demanding environments. The compact design and finely threaded stem allow for accurate flow control and easy integration into systems where precision and safety are critical.
| Description | Grade / ASTM Specification | |||
| Valve Body Materials | ||||
| 316SS | Carbon Steel | Alloy 400 | ||
| 1 | Handle | Stainless Steel | Aluminum | Stainless Steel |
| 2 | Set Screw | Stainless Steel | ||
| 3 | Lock Nut | 316SS/A479 | ||
| 4 | Packing Bolt | 316SS/A479 | ||
| 5 | Packing Gland * | 316SS/A479 | ||
| 6 | Packing Washer * | Reinforced PTFE | ||
| 7 | Packing * | PTFE, Grafoil | ||
| 8 | Bonnet * | 316SS/A479 | C, Steel/A105 | Alloy 400/B164 |
| 9 | Stem * | 316SS/A479 | ||
| 10 | Vee Tip * | 630SS/A564 | Alloy 500/B865 | |
| Ball Tip * | ||||
| 11 | Stop Pin | Stainless Steel | ||
| 12 | Body | 316SS/A479 | C, Steel/A105 | Alloy 400/B164 |
"*"marked are wetted parts.
| Series | Packing Material | Body Material | Temperature Range | Pressure Rating at 100°F | Pressure Rating at Maximum Temperature |
| SVH1 | PTFE | Stainless Steel | -65°F ~ 450°F (-54°C ~ 232°C) | 10000 psig | 4000 psig at 500°F (276 bar at 260°C) |
| Carbon Steel | |||||
| SVH2 | PTFE | Stainless Steel | -65°F ~ 450°F (-54°C ~ 232°C) | 6000 psig | 4130 psig at 450°F (285 bar at 232°C) |
| Carbon Steel | -20°F ~ 350°F (-29°C ~ 176°C) | 6000 psig | 5230 psig at 350°F (360 bar at 176°C) | ||
| Alloy 400 | -65°F ~ 450°F (-54°C ~ 232°C) | 5000 psig | 3970 psig at 450°F (274 bar at 232°C) | ||
| Grafoil | Stainless Steel | -65°F ~ 1200°F (-54°C ~ 648°C) | 6000 psig | 1715 psig at 1200°F (118 bar at 648°C) | |
| Carbon Steel | -20°F ~ 350°F (-29°C ~ 176°C) | 6000 psig | 5230 psig at 350°F (360 bar at 176°C) | ||
| Alloy 400 | -65°F ~ 500°F (-54°C ~ 260°C) | 5000 psig | 3960 psig at 500°F (273 bar at 260°C) * |
