NAI-LOK High Pressure Needle Valve 1/4 Inch Female NPT Stainless Steel SS316 Instrumentation Valve 4000 psi
The NAI-LOK High Pressure Needle Valve is designed for precise flow control in instrumentation and high-pressure fluid systems. Manufactured from SS316 stainless steel, this valve provides excellent corrosion resistance, durability, and reliable sealing performance even under extreme conditions. With a 1/4 inch Female NPT connection, it is widely used in oil & gas, chemical processing, laboratory testing, and hydraulic applications.
This needle valve supports operating pressures up to 6000 psi (413 bar), ensuring safety and stability for both gas and liquid service. Compact design, precision thread, and smooth operation make it ideal for critical instrumentation systems.
Features:
- Connection size: 1 / 8 ″~ 2 ″
- Pressure rating: 4000PSI
- Operating temp: - 20 ° C to 440 ° C)
- Valve operation: round, vernier, knurled groove and adjustable torque handle
- Valve core type: needle type, regulating type
- Connection mode: welding, ferrule, thread, union, flange
| Specification |
Details |
| Product Type |
High Pressure Needle Valve-NG Series |
| Brand |
NAI-LOK |
| Material |
Stainless Steel 316 / SS316 |
| Connection Type |
Female NPT Thread |
| Port Size |
1/4 -1'', Female NPT, Male NPT, Tube OD |
| Pressure Rating |
Up to 6000 psi (413 bar) |
| Temperature Range |
-20°C to +232°C (-4°F to +450°F) |
| Stem Type |
Non-rotating, precision needle stem |
| Operation |
Manual |
| Applications |
Oil & Gas, Chemical Processing, Instrumentation, Hydraulic, Laboratory |
| Standards |
ASME / ANSI / ISO Compliance |
| Material / Alloy |
UNS Number |
Main Characteristics |
| Hastelloy® C276 |
UNS N10276 |
Excellent resistance to strong oxidizers, chlorine, and a wide range of chemical environments. |
| Hastelloy® B2 |
UNS N10665 |
Outstanding resistance to hydrochloric acid at all concentrations and temperatures. |
| Hastelloy® B3 |
UNS N10675 |
Better thermal stability and corrosion resistance than B2, especially against hydrochloric acid. |
| Hastelloy® C22 |
UNS N06022 |
Superior resistance to oxidizing aqueous media, including wet chlorine and nitric acid. |
| Inconel® 600 |
UNS N06600 |
Excellent resistance to oxidation and corrosion, good strength at high temperatures. |
| Inconel® 625 |
UNS N06625 |
High strength and outstanding fatigue and thermal-fatigue resistance, excellent corrosion resistance. |
| Incoloy® 800H / 800HT |
UNS N08810 / N08811 |
Good strength and oxidation resistance at elevated temperatures, used in heat exchangers and furnace components. |
| Monel® 400 |
UNS N04400 |
High strength and excellent resistance to seawater, acids, and alkalis. |
| Alloy 20 |
UNS N08020 |
Excellent resistance to sulfuric acid, used in chemical and petrochemical industries. |
| Alloy 254 SMO® (6Mo) |
UNS S31254 |
Superior resistance to pitting, crevice corrosion, and chloride stress corrosion cracking. |
| Super Duplex® 2507 |
UNS S32750 |
High mechanical strength and resistance to pitting, crevice corrosion, and stress corrosion cracking. |
| Duplex 2205 |
UNS S32205 |
Balanced austenitic-ferritic structure, good resistance to chloride stress corrosion cracking. |
| 904L Stainless Steel |
UNS N08904 |
Excellent resistance to strong reducing acids (sulfuric acid), superior to 316L in corrosion performance. |
| Alloy C4 |
UNS N06455 |
Excellent resistance to strong oxidizing agents, even at elevated temperatures. |
| Alloy 825 (Incoloy® 825) |
UNS N08825 |
Good resistance to sulfuric and phosphoric acids, widely used in chemical processing. |
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