Stainless Steel Needle Valve H-99 with NPT GW Connection
The high-pressure needle valve is engineered for reliable performance in demanding environments, offering precise control and secure shut-off in sampling lines, testing stations, and flow isolation applications. Designed for system integration or panel mounting, it features a robust V-type stem mechanism that ensures smooth open-close operation and long-lasting durability. Manufactured entirely from corrosion-resistant AISI 316 stainless steel, including both the body and stem, the valve guarantees exceptional strength and resistance to aggressive media. Its metal-to-metal sealing system enhances tightness and reliability, while the choice of PTFE or GRAFOIL packing provides flexibility for a wide range of operating conditions. With temperature resistance up to +204°C for PTFE and up to +648°C for GRAFOIL, as well as pressure handling up to 690 bar, this valve is built to perform under extreme conditions. Each unit undergoes rigorous factory testing to ensure maximum safety and operational integrity. Equipped with NPT female connections, the valve allows easy installation and integration into existing systems, making it a trusted solution for industries where precision, safety, and durability are critical.
List of product variants
| Article number | Product variant name | Nominal inner diameter | Working pressure [bar] | Enquiry |
|---|---|---|---|---|
| HM-H99-SS-FNV-02 | H99 needle valve, 2 x 1/8" NPT female thread, PTFE seal, SS | 5 | 690 | |
| HM-H99-SS-FNV-02-G | H99 needle valve, 2 x 1/8" NPT female thread, Grafoil seal, SS | 5 | 690 | |
| HM-H99-SS-FNV-04 | H99 needle valve, 2 x 1/4" NPT female thread, PTFE seal, SS | 5 | 690 | |
| HM-H99-SS-FNV-06 | H99 needle valve, 2 x 3/8" NPT female thread, PTFE seal, SS | 5 | 690 | |
| HM-H99-SS-FNV-08 | H99 needle valve, 2 x 1/2" NPT female thread, PTFE seal, SS | 5 | 690 | |
| HM-H99-SS-FNV-08-G | H99 needle valve, 2 x 1/2" NPT female thread, Grafoil seal, SS | 5 | 690 | |
| HM-H99-SS-FNV-12 | H99 needle valve, 2 x 3/4" NPT female thread, PTFE seal, SS | 6 | 690 | |
| HM-H99-SS-FNV-16 | H99 needle valve, 2 x 1" NPT female threads, PTFE seal, SS | 8 | 690 |
The high-pressure needle valve is engineered for reliable performance in demanding environments, offering precise control and secure shut-off in sampling lines, testing stations, and flow isolation applications. Designed for system integration or panel mounting, it features a robust V-type stem mechanism that ensures smooth open-close operation and long-lasting durability. Manufactured entirely from corrosion-resistant AISI 316 stainless steel, including both the body and stem, the valve guarantees exceptional strength and resistance to aggressive media. Its metal-to-metal sealing system enhances tightness and reliability, while the choice of PTFE or GRAFOIL packing provides flexibility for a wide range of operating conditions. With temperature resistance up to +204°C for PTFE and up to +648°C for GRAFOIL, as well as pressure handling up to 690 bar, this valve is built to perform under extreme conditions. Each unit undergoes rigorous factory testing to ensure maximum safety and operational integrity. Equipped with NPT female connections, the valve allows easy installation and integration into existing systems, making it a trusted solution for industries where precision, safety, and durability are critical.
Additional information
| Material | SS – stainless steel |
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Additional information
| Material | SS – stainless steel |
|---|



