Parker Instrumentation Valves

Parker offers the most comprehensive range of instrumentation valves in the Industry. These high quality valves perform in system pressures up to 150,000 psi. Innovative performance designs are available in all of our needle valves, ball valves, check valves, relief valves, metering valves, block and bleed valves, stream switching valves, and control valves. We offer these instrumentation valves in multiple configurations, end connection sizes and a variety of materials. Parker has the instrumentation valve to meet your system’s specific application.

NON RETURN CHECK VALVE (10,000 PSI) – HI CHECK SERIES

Parker’s Hi Check series high performance non-return valves are designed for unidirectional flow control of fluids and gases in process instrumentation applications. There is a choice of two check valve models, with cold working pressures of 10000 PSI (689 bar) and 6000 PSI (414 bar). Both check valves have an opening (or ‘cracking’) pressure of 10 PSI (0.7 bar). These robust check valves feature a two-piece metal seated body design to minimise any risk of leakage. The Parker check valves are available with a choice of integral male or female NPT, or single- or two-ferrule compression style ends, the compression ends enable users to eliminate the use of taper threads and thread sealant – further reducing the number of potential leakage paths and avoiding system contamination problems.

There is a comprehensive range of inlet and outlet connections, covering imperial sizes of 1/4″, 3/8” and 1/2″, and metric sizes of 6 mm, 10 mm and 12 mm. The check valves are designed to meet the pressure and temperature requirements of ANSI/ASME B.16.34, as limited by the seat materials. NACE compliant versions are available.


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Non Return Check Valve (10,000 PSI) – Hi Check Series

Features and Benefits:

  • ANSI/ASME B.16.34
  • Heat code traceable
Relief Valves, 6,000 PSI – R Series

RELIEF VALVES, 6,000 PSI – R SERIES

Parker R Series Relief Valves are unique since they offer both a low pressure valve line (RL4) and a higher pressure valve line (RH4). They are both designed such that when the upstream pressure exceeds the closing force exerted by the spring, the lower stem opens, permitting flow through the valve. Flow through the valve increases proportionately to the increase in upstream pressure.

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Features/Benefits:

  • Pressure settings are externally adjustable while the valve is in operation. Multiple spring ranges provide greater system sensitivity and enhanced performance
  • Captured molded seat design is blow-out and chip resistant
  • Manual Override option with positive stem retraction is available for pressures up to 1500 psig (103 bar)
  • This option permits the user to relieve upstream pressure while maintaining the predetermined cracking pressure
  • Color coded springs and labels indicate spring cracking range
  • Lock wire feature secures a given pressure setting
  • Back pressure has minimum effect on cracking pressure

BALL VALVE, 2 WAY 2B SERIES – 20,000 PSI

Parker Autoclave’s 2B Series ball valves have been designed to provide superior quality for maximum performance within a variety of valve styles, sizes, and process connections. These ball valves feature an integral one-piece trunnion mounted ball and stem that eliminates the shear failure common to two-piece designs. The seat glands are re-torqueable for longer seat life, and the low friction pressure-assisted graphite filled PTFE stem seal reduces actuation torque and increases cycle life.

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Ball Valve, 2 Way 2B Series – 20,000 PSI

Features and Benefits:

  • One-piece, trunnion mounted style, stem design eliminates shear failure and reduces the effects of side loading found in two piece designs
  • Re-torqueable seat glands for longer seat life
  • PEEK seats offer excellent resistance to chemicals, heat, and wear/abrasion
  • Full-port flow path minimizes pressure drop
  • 316 cold worked stainless steel construction
  • Low friction pressure assisted graphite filled Teflon stem seal increases cycle life and reduces operating torque
  • Quarter turn from open to close with positive stop
  • Viton o-rings for operation from 0°F (-17.8°C) to 400°F (204°C)
  • Optional o-rings available for high-temperature applications
  • Optional wetted materials
  • Wide selection of tube and pipe end fittings available
  • Electric and pneumatic actuator options
Ball Valve,3 Way 3B Series – 20,000 PSI

BALL VALVE,3 WAY 3B SERIES – 20,000 PSI

Parker Autoclave’s 3B Series ball valves have been designed to provide superior quality for maximum performance within a variety of valve styles, sizes, and process connections. These 3 way ball valves feature an integral one-piece trunnion mounted ball and stem that eliminates the shear failure common to two-piece designs. The seat glands are re-torqueable for longer seat life, and the low friction pressure-assisted graphite filled PTFE stem seal reduces actuation torque and increases cycle life.

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Features/Benefits:

  • One-piece, trunnion mounted style, stem design eliminates shear failure and reduces the effects of side loading
  • Re-torqueable seat glands for longer seat life
  • Carbon filled PEEK seats offer excellent resistance to chemicals, heat, and wear/abrasion
  • Full-port flow path minimizes pressure drop
  • 316 cold worked stainless steel construction
  • Low friction pressure assisted graphite filled Teflon stem seal increases cycle life and reduces operating torque
  • Quarter turn from open to close with positive stop
  • Viton o-rings for operation from 0°F (-17.8°C) to 400°F (204°C)
  • Optional o-rings available for high-temperature applications
  • Optional wetted materials
  • Wide selection of tube and pipe end fittings available
  • Electric and pneumatic actuator options

BALL VALVES,4 WAY 4B SERIES – 10,000 PSI

Parker Autoclave’s 4B Series ball valves have been designed to provide superior quality for maximum performance within a variety of valve styles, sizes, and process connections. Some of the more unique design innovations include an integral one-piece trunnion mounted style ball and stem that eliminates the shear failure common in two piece designs, re-torqueable seat glands that result in longer seat life, and a low friction stem seal that reduces actuation torque and enhances cycle life.

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Ball Valves,4 Way 4B Series – 10,000 PSI

Features/Benefits :

  • One-piece, trunnion mounted style, stem design eliminates shear failure found in two piece designs and reduces the effects of side loading
  • Re-torqueable seat glands for longer seat life
  • Carbon filled PEEK seats offer excellent resistance to chemicals, heat, and wear/abrasion
  • Full-port flow path minimizes pressure drop
  • 316 cold worked stainless steel construction
  • Low friction pressure assisted grap hite filled PTFE stem seal increases cycle life and reduces operating torque
  • Quarter turn crossover, and the half turn four way switching models available
  • Viton o-rings for operation from 0°F (-17.8°C) to 400°F (204°C)
  • Optional o-rings available for high-temperature applications
  • Optional wetted materials
  • Wide selection of tube and pipe ended fittings are available
  • Electric and pneumatic actuator options
Needle Valves, 10V Series – 15,000 PSI

NEEDLE VALVES, 10V SERIES – 15,000 PSI

Parker Autoclave’s 10V Series needle valves are a non-rotating rising stem design, working pressures to 15,000 psi (1034 bar). Tubing sizes range from 1/8″” to 1/2″”. Tubing connections utilizes Parker Autoclave Engineers Speed Bite single ferrule design. Operating temperatures from 0°F to 650°F (-17.8°C to 343°C). 316 stainless steel construction, other options available. Along with their many features these valves provide dependable and trouble free service in wide variety of applications.

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Features and Benefits :

  • 10V Series valve design provides in-line tube connections for 1/4” to 1/2” tube sizes
  • Tubing sizes from 1/8” to 1/2”
  • Rising stem/barstock body design
  • Non-rotating stem prevents stem/seat galling
  • Metal-to-metal seating achieves bubble-tight shutoff, longer stem/seat life in abrasive flow, greater durability for repeated on/off cycles and excellent corrosion resistance
  • PTFE encapsulated packing provides dependable stem and body sealing
  • Stem sleeve and packing gland materials have been selected to achieve extended thread cycle life and reduced handle torque
  • Choice of Vee or Regulating stem tips
  • Available in five body patterns

NEEDLE VALVE, DIVERTER 20DV SERIES – 20,000 PSI

Parker Autoclave’s 20DV Series diverter needle valves are designed with a non-rotating rising stem valve, with working pressures to 20,000 psi (1379 bar). This diverter valve uses the Parker Autoclave tubing in sizes ranging from 9/16″” to 1″”. Diverter valves provide the ability to direct incoming flow to one of two outlets. Flow is changed by rotating the handle in or out causing a double-ended stem to block the flow path to the outlet not needed.

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Needle Valve, Diverter 20DV Series – 20,000 PSI

Features and Benefits:

  • Diverts incoming flow to one of two outlet lines
  • Tubing sizes from 9/16” to 1”
  • Rising stem/barstock body design
  • Non-rotating stem prevents stem/seat galling
  • Metal-to-metal seating achieves bubble-tight shut-off, longer stem/seat life in abrasive flow, greater durability for repeated on/off cycles and excellent corrosion resistance.
  • PTFE encapsulated packing provides dependable stem and body sealing
  • Stem sleeve and packing gland materials have been selected to achieve extended thread cycle life and reduced handle torque

Needle Valve, Pipe Valve P Series – 15,000 PSI

NEEDLE VALVE, PIPE VALVE P SERIES – 15,000 PSI

Parker Autoclave’s P Series pipe needle valves are designed to provide a commercial easy to use connection for gas and liquid service. These valves are complemented by a complete line of fittings, tubing and accessories. P Series valve design provides in-line pipe connections for 1/4” to 1” pipe sizes. These pipe valves work in pressures up to 15,000 psi (1034 bar). Operating temperatures can go from -423F to 400°F (-252°C to 204°C) with 316 stainless steel body as standard.


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Features and Benefits:

  • P Series valve design provides in-line pipe connections for 1/4” to 1” pipe sizes. 1/8 connections offset
  • Rising stem/bar stock body design
  • Non-rotating stem prevents stem/seat galling (1/8″ NPT rotating stem design)
  • Metal-to-metal seating achieves bubble-tight shut-off, longer stem/seat life in abrasive flow, greater durability for repeated on/off cycles and excellent corrosion resistance
  • PTFE encapsulated packing provides dependable stem and body sealing
  • Stem sleeve and packing gland materials have been selected to achieve extended thread cycle life and reduced handle torque
  • Choice of Vee or Regulating stem tips
  • Operating temperature range from -423°F (-252°C) to 400°F (204°C)

RELIEF VALVE, RVP SERIES – 75,000 PSI

Parker Autoclave’s RVP Series relief valves are designed with a metal seat design for reliable venting of gases at set pressures from 3,000 psi (206 bar) to 75,000 psi (5171 bar). The operating temperature range is -423°F (-252°C) to 400°F (204°C).These precision relief valves are designed for thermal expansion or low volume relief applications at high pressures where flow is not critical. Thus, liquid curves for these models are not shown in the catalog.


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Relief Valve, RVP Series – 75,000 PSI

Features and Benefits:

  • Standard models of Relief Valves are constructed of 316 stainless steel with selected components made of anti-galling stainless steel material for optimum economy and ruggedness
  • Designed with 3/8” and 5/16” Parker Autoclave high pressure inlet connections. The outlet connection on all models is a female 3/4” NPT. While adapters to other sizes and connection types are available, they must be sized for specific flow requirements
  • Orifice diameters range from .062 (1.57mm) to .312” (7.92mm)
  • Designed to open as a function of increasing system pressure. Proper spring selection assures repeatability of opening, full lift and flow, and reseat pressures
  • Materials engineering and stringent quality control procedures combine to assure the highest quality, reliability and service life. Each valve is preset and factory sealed to ensure proper valve operation
  • Unique seat construction plus over-the-nozzle guiding and proper selection of materials permits standard set pressures to 75,000 psi. (5171 bar)
  • Designed to provide bubble tight shut off of gases
  • Engineered to perform with fewer basic components, RVS valves facilitate minimum stocking of spare parts and ease of maintenance
  • Available with CE Mark. SOG option available upon request
Needle Valve, High Pressure – 150V Series 150,000 PSI

NEEDLE VALVE, HIGH PRESSURE – 150V SERIES 150,000 PSI

Parker Autoclave’s 150V Series needle valves are cylindrical body design of high strength 15-5PH stainless steel with a non-rotating rising stem design that utilizes a replaceable seat of nickel maraging steel. These specialty valves operate in pressures up to 150,000 psi (10350 bar). The tubing size is only available in 5/16”. Tubing connections utilize the Parker Autoclave cone and thread design.


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Features and Benefits:

  • Tubing size 5/16”
  • Non-rotating stem prevents stem/seat galling
  • Rising stem/barstock body design
  • Metal-to-metal seating achieves bubble-tight shut-off, longer stem/seat life in abrasive flow, greater durability for repeated on/off cycles and excellent corrosion resistance
  • Cylindrical body of high strength 15-5PH stainless steel with stainless steel packing gland. Tool steel nonrotating stem with replaceable seat of nickel maraging steel. Stem must be actuated with torque wrench (refer to Tools, Installation, Operation and Maintenance section)
  • Wedge-type PTFE and leather packing below stem threads with beryllium-copper Autoclave Anti-Extrusion Back up Rings
  • Vee stem tip only

NEEDLE VALVE,SCREWED BONNET 6000 PSI – NP6 SERIES

Parker’s NP6 Needle Valves are severe service, needle valves. They are designed with the packing below the stem threads and a two-piece stem for critical systems up to 6,000 PSI (414 BAR). The packing below the threads protects the flow stream from thread lubricant contamination or washout and also protects the stem threads from potential damaging effects of the media. The two-piece stem produces a non-rotating lower stem for superior, repeatable sealing and reduced packing wear.


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Needle Valve,screwed Bonnet 6000 PSI – NP6 Series

Features and Benefits:

  • Packing below power threads protects thread lubricants from media and isolates the media from the lubricant for severe service applications
  • O-ring dust seal in bonnet protects stem threads from external contamination
  • Choice of two non-rotating stem types: R-Stem – All metal, blunt stem tip, K-Stem – PCTFE stem tip
  • Non rotating lower stem extends packing and valve life
  • 316 stainless steel construction
  • Inline and angle patterns
  • Wide variety of US Customary and SI ports
  • Panel mountable
  • 100% factory tested
  • Optional color coded handles
10,000 Psi Needle Valve – HNV Series

10,000 PSI NEEDLE VALVE – HNV SERIES

Bar stock needle valves are purpose designed valves for operation with any fluid up to 10,000 psi (689 bar) rating. Complete with standard PTFE gland packing and self-centering non-rotational tip, gives the user assurance of total in service sealing security. For gaseous application, soft tipped optional seating is available. A wide variety of end connectors are offered for all types of installation. NACE compliant materials and oxygen clean are also available, along with an extensive list of materials of construction.


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Features and Benefits:

  • Rolled spindle operating threads
  • Stainless steel construction standard
  • PTFE packing standard, optional graphite
  • Alternative tip and materials of construction available
  • Self-centering non-rotating spindle tip for bubble tight shut-off
  • Color coded functional identification
  • Back stop spindle for blowout prevention, and minimal atmospheric leakage
  • Low-torque operating T-bar handle
  • Externally adjustable gland
  • Panel and base mount option
  • Variety of end connections including integral compression one-piece bodies
  • Angled versions available
  • Dust cap to prevent ingress of contamination to operating thread
  • Firesafe option available to API 607 BS 6755 Part 2
  • Bonnet locking pin fitted as standard
  • Angled flow path (option)