Swagelok® High-Pressure Needle Valves
Cold-worked 316 stainless steel body and high-pressure end connections enable working pressures up to 45 000 psig (3102 bar).
SpecificationsWorking Pressure
Temperature
Flow Coefficient
Body Material
Packing Material
End Connections
• Type
• Size |
Up to 45 000 psig (3102 bar)
–65 to 850°F (–53 to 454°C)
Up to 0.19
316 stainless steel
Glass-filled PTFE
Straight-thread high-pressure female, female NPT
9/16-18, 3/4-16, 1 1/8-12; 1/4 in. |
Features
- Replaceable, nonrotating stem design:
- provides easy valve maintenance
- helps prevent galling or damage to valve seat.
- Packing design enables external adjustment without removing valve from line
- Rolled threads on stem shank
- Easily replaceable seat in angle-pattern valve
- Cold-worked body is standard; annealed body is available for sour gas service.
- Weep holes provide leak detection.
- Bonnet lock plate helps prevent accidental removal of bonnet.
Pneumatic Actuator
Pneumatic actuators are available in normally open, normally closed, and double acting modes.
Testing
Every Swagelok high-pressure needle valve is factory tested with water up to its maximum pressure rating to a requirement of no detectable leakage at the seat and packing.
High-Pressure Needle Valve Options
Stem OptionsValve are standard with 440C stainless steel stems. 440C stainless steel with cobalt-based alloy stem tip and S17400 stainless steel stems are available.
High-Temperature Stem Packing
Grafoil stem packing is available for temperatures up to 850°F (454°C).
Stem Packing Kits
PTFE and Grafoil stem packing kits are available.
Replaceable SeatAngle-pattern valves have a one-piece replaceable seat with an integral female NPT or female straight thread high-pressure end connection. Seats are manufactured from 316 stainless steel and have silver-plated threads.
Stainless Steel Bar HandlesAnodized aluminum bar handles are standard; stainless steel bar handles can be ordered factory assembled.
Spare Handles
Anodized aluminum and stainless steel bar handles can be ordered as spare parts.
Sour Gas Valves
Valves are available for sour gas service and meet NACE MR0175/ISO 15156. The valves have annealed bodies and S17400 stems. The 410 series valve maintains its 10 000 psig (689 bar) rating. The 445, 645, and 945 series valves are rated to 18 000 psig at 100°F (1240 bar at 37°C) with high-pressure ports.