Instrumentation valves

7 models in this family

Review the listed models and configurations in this family, then select one for a quotation request.

Selected model

Instrumentation globe valve

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Straight-pattern instrumentation valve with a screwed bonnet and Z20C13 needle closure. The body and bonnet are ASTM A105N forged steel, with a Z12CF13 stainless-steel stem. Both the gasket and packing use graphite. A manual handwheel operates the needle, with threaded and socket-weld connection arrangements for the instrumentation line. The specified pressure-temperature points are 250 bar at 38°C and 100 bar at 300°C.

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Selected model specifications

Construction	Straight body with screwed bonnet
Body and bonnet	ASTM A105N
Needle	Z20C13 / ASTM A276 Gr.420
Stem	Z12CF13
Gasket and packing	Graphite
Pressure-temperature points	250 bar @ 38°C; 100 bar @ 300°C
End connections	Threaded ASME B1.20.1 or socket-weld ASME B16.11
Nominal size range	NPS 1/4–1
Operation	Manual handwheel

Models and configurations

Select a configuration. The family image changes only when the model has a distinct illustration.

Instrumentation globe valveConstruction: Straight body with screwed bonnet · Body and bonnet: ASTM A105N · Needle: Z20C13 / ASTM A276 Gr.420 · Stem: Z12CF13 · Gasket and packing: Graphite · Pressure-temperature points: 250 bar @ 38°C; 100 bar @ 300°C · End connections: Threaded ASME B1.20.1 or socket-weld ASME B16.11 · Nominal size range: NPS 1/4–1 · Operation: Manual handwheelStraight-pattern instrumentation valve with a screwed bonnet and Z20C13 needle closure. The body and bonnet are ASTM A105N forged steel, with a Z12CF13 stainless-steel stem. Both the gasket and packing use graphite. A manual handwheel operates the needle, with threaded and socket-weld connection arrangements for the instrumentation line. The specified pressure-temperature points are 250 bar at 38°C and 100 bar at 300°C.

High-pressure needle valveOperation: T-bar handle; optional handwheel · Spindle tip: Non-rotating · Packing: PTFE · Pressure rating: 6000 psi; 10,000 psi option · Stated pressure limit: 400 bar · Stated temperature limit: 240 °C · F and M sizes: NPS 1/4–1The high-pressure needle valve has a T-bar handle, a spindle with rolled threads and a non-rotating tip. PTFE packing and an adjustable gland provide stem sealing. The bonnet-to-body interface is described as metal-to-metal, with an optional PTFE or Viton supplementary seal. F and M configurations cover 1/4–1 inch, with G12 variants at 1/2 inch. Stated limits include 400 bar and 240 °C; these are separate limits rather than an assumed simultaneous duty point. A 6000 psi rating and a 10,000 psi option are also identified for configuration selection.

Instrument manifoldsAssembly type: Three-way needle-valve manifold · Mounting arrangements: T33 / Y34: direct; Y33: remote · Stated pressure limit: 400 bar · Stated temperature limit: 240 °CThe three-way instrumentation manifold combines needle-valve control passages in a common assembly. T33 is described for direct flange-to-pipe mounting, Y34 for direct mounting and Y33 for remote mounting. Its valve arrangement and port layout distinguish it from an individual needle valve. The stated limits are 240 °C and 400 bar. Selection requires the direct or remote mounting arrangement, port positions and instrument connection to match the instrumentation pipework.

Compact double block and bleed valveFunction: Double Block & Bleed · Flange construction: Integral forged flange · Family valve formats: Ball and needle · Arrangement: Pipeline and instrument valves in one assemblyThe compact double-block-and-bleed assembly combines pipeline and instrumentation valves in one unit. It provides two isolation functions with a bleed passage between them, allowing an instrument to be isolated and the trapped section depressurised. An integral forged flange and fewer separate joints reduce size, weight and potential leak points. Ball-valve and needle-valve formats, different flange sizes and ratings, and threaded-end configurations are described for the modular family. The final arrangement depends on the line and instrument connection.

Compact double block injection valveFunction: Double Block Injection · Construction: Compact modular assembly with integral forged flange · Valve formats: Ball and needle options within the family · Application: Line injection with isolationThe double-block injection assembly combines an injection connection and two isolation functions in a compact unit. Integrating pipeline and instrumentation valves reduces separate adaptors and joints and keeps the injection arrangement together. It belongs to the modular valve family with an integral forged flange. Ball and needle formats and different material, flange-size and flange-rating choices are described for the family.

Compact sampling valveFunction: Process-line sampling · Construction: Compact modular; integral forged flange · Valve formats: Ball and needle within the product familyThe compact sampling assembly brings the process connection and sample-path control into a modular unit. Its purpose is controlled sample withdrawal, which distinguishes it from a simple isolation valve. The integral forged flange and reduced number of joints limit weight and bending loads on the pipework. Ball and needle formats and a range of materials and connections are described for the family.

G12 high-pressure gauge valveModels: G12F / G12M · Rating: 6000 psi; 10000 psi on request · Maximum pressure: 400 bar · Maximum temperature: 240 °C · Size: NPS 1/2; 3/4 on requestThe G12 gauge valve isolates and operates the pressure-instrument connection. G12F and G12M show alternative connection arrangements for this duty, which is distinct from a simple two-way hand valve. The listed data give a 6000 psi rating, with 10000 psi on request, a maximum temperature of 240 °C and a maximum pressure of 400 bar. Standard size is NPS 1/2, with 3/4 inch on request. Confirm the combined operating envelope for the selected configuration.