Autoclave SW4872 Needle Valve
SW Series: Low Pressure Single Ferrule
Pressures to 15,000 psi / Temperatures from -100F to +650F
Principle of Operation:
The Low Pressure (15,000 psi maximum), otherwise known as “SpeedBite” Needle Valves are designed for applications between traditional compression fittings and the Parker Autoclave Engineers’ Medium Pressure Cone and Thread products that are designed for high flow and high pressure. SpeedBite Valves are engineered for use with annealed ASTM A269 316 (and similar) Stainless Steel tubing designed by Parker Autoclave Engineers to a controlled hardness. SpeedBite valves employ a bite-type compression style single ferrule that is manually “set”. 1-1/4 rotation from tube grip forces the ferrule into tapered seat and causes the leading edge of ferrule to bite into the tubing, creating a shoulder for positive mechanical support of the tubing. When correctly installed, connection strength far exceeds the burst pressure of the tubing utilized.
Low Pressure Valve Features:
- Temperature rated -100°F to +650°F with associated packing/material options (see below)
- Designed for use with Low Pressure “SpeedBite” single ferrule compression fittings and tubing
- SW Series valves are constructed for tube sizes from 1/4″ OD to 1/2″ OD
- UNS S31600 cold worked 316 SS body construction as standard. (Optional materials available)
- Non-rotating stem prevents stem/seat galling
- Metal-to-metal seating achieves bubble-tight shut-off, longer stem/seat life, greater durability for repeated on/off cycles and excellent corrosion resistance. These valves can be used with liquid and gas.
- PTFE packing below stem threads provides dependable stem and body sealing. Optional packing materials available.
- Choice of Vee (Shutoff) or Regulating (Flow Control) stem tips
- Optional N-Dura Stem and/or Replaceable Seat Coating or Stellite material option for severe service available
- Available in five body patterns
Autoclave SW4872 Needle Valve Technical Data:
- Description: 1/4″ 2-Way Angle / Replaceable Seat Low Pressure Needle Valve
- Pressure Rating: 15,000 psi
- Connection Size: 1/4″ OD (SW250 connections)
- Stem / Seat Type: Non-Rotating Vee Stem (on-off service)
- Body Pattern: 2-Way Angle / Replaceable Seat
- Orifice Diameter: 0.188″
- Cv: 0.65
- Temperature: standard Parker Autoclave Engineers valves with PTFE packing may be operated from 0°F to 450°F
- Repair Kit: RSW4872
Valve Options (add the following suffixes to the valve part number):
- “B“: Cryogenic trim materials and PTFE packing required when below 0°F to -100°F
- “TG“: Standard valve with PTFE-Glass packing -100°F to 600°F; see also -B option above when below 0°F
- “GY“: Standard valve with Graphite Yarn packing to 650°F
Notes:
- Parker Autoclave Engineers valves are complemented by a complete line of low pressure fittings, tubing, check valves, relief valves and line filters.
- Traceability is ensured by use of heat and purchase order codes etched on valve body that also include model number, MAWP rating, and material type references.
- All valves include compression sleeve and gland nut unless requested otherwise.
- Cv values shown are for 2-way straight valve pattern. For 2-way angle patterns, increase Cv value by 50% (based on water). Formula for converting Cv to volumetric flow can be found in the Technical Information section of the catalog.
Please contact our Sales Department for assistance in selecting the right products for your application.
Product Catalog: Parker Autoclave Low Pressure Needle Valves
