Products — Instrumentation Fittings, Valves & Vacuum Components

From our production floor

Machined from certified 316 barstock

Forged instrument needle valves machined from certified 316 stainless steel — Forged instrument needle valves — 316 stainless steel

Compression Fittings

Double Ferrule Straight Union

Two-piece ferrule design for a leak-free connection under vibration and pressure shock. Precision machined sealing surface — no welding required for assembly. Dimensionally interchangeable with international instrumentation fitting specifications.

Parameter	Specification
Material	316 Stainless Steel (GOST 03X17H14M2)
Max. Working Pressure	6000 psig (413 bar)
Tube Size	1/8″ – 2″ (6 mm – 50 mm)
Connection Type	Tube to tube
Temperature Range	−54 °C to 648 °C

Threaded Fittings

NPT Threaded Tee Fitting

Uniform wall thickness for stable high-pressure resistance. Standard NPT thread, fully compatible with local pipeline specifications. Deburred internal passage for low flow resistance and no turbulence.

Parameter	Specification
Material	316 Stainless Steel (GOST 03X17H14M2)
Max. Working Pressure	3000 psig (207 bar)
Thread Size	1/8″ NPT – 2″ NPT
Connection Type	Female NPT × Female NPT × Female NPT
Temperature Range	−54 °C to 648 °C

Instrument Valves

Forged Instrument Valves — Needle, Bellows & Ball

Forged-body valves with precision machined stems for metering, isolation and gauge protection in instrument tubing circuits. Bellows-sealed versions provide zero-leak stem sealing.

Parameter	Specification
Material	316 Stainless Steel (GOST 03X17H14M2)
Max. Working Pressure	Up to 6000 psig (413 bar)
Connection	1/4″ – 3/4″ tube / NPT
Types	Needle · Bellows · Ball
Temperature Range	−54 °C to 648 °C

Globe Valves

Y-Globe Valve (65° Angle Pattern)

Angle-pattern globe valve for high-pressure instrument service where compact flow geometry and tight shut-off are required.

Parameter	Specification
Material	316 Stainless Steel (GOST 03X17H14M2)
Max. Working Pressure	6000 psig (413 bar)
Pattern	65° angle globe
Connection	Tube / NPT / Socket weld
Temperature Range	−54 °C to 648 °C

Manifolds

Two-Way Valve Manifold

Compact manifold for transmitter and gauge isolation in process instrumentation, combining block and bleed functions in a single forged body.

Parameter	Specification
Material	316 Stainless Steel (GOST 03X17H14M2)
Max. Working Pressure	Up to 6000 psig (413 bar)
Configuration	2-way block & bleed
Connection	Tube / NPT / Flanged
Temperature Range	−54 °C to 648 °C

Vacuum

KF Vacuum Flanges & Components

ISO-KF (NW) quick-release vacuum flanges, centering rings and components for high-vacuum and ultra-high-vacuum systems.

Parameter	Specification
Material	316 Stainless Steel (GOST 03X17H14M2)
Standard	ISO-KF / NW
Sizes	KF10 – KF50
Leak Rate	Vacuum-grade sealed connections
Temperature Range	−54 °C to 648 °C

Weld Fittings

Socket Weld & Buttweld Fittings

Straight unions and fittings for permanent welded connections where compression fittings are not specified.

Parameter	Specification
Material	316 Stainless Steel (GOST 03X17H14M2)
Max. Working Pressure	Up to 6000 psig (413 bar)
Types	Socket weld · Buttweld · Unions
Size Range	1/8″ – 2″
Temperature Range	−54 °C to 648 °C

Gas Cylinders

316 Seamless Stainless Gas Cylinders

Seamless drawn stainless steel cylinders for instrument gas, calibration and sample service.

Parameter	Specification
Material	316 Seamless Stainless Steel
Construction	Seamless drawn
Service	Instrument gas · Calibration · Sampling
Certification	Material certs available on request
Temperature Range	−54 °C to 648 °C

Complete range

Our Full Product Line

The complete YING ZEARK FLOW range — compression fittings, threaded and weld fittings, instrument valves, vacuum components and more, all in 316 stainless steel (GOST 03X17H14M2).

Isolation and bleed valves — Isolation & Bleed Valves

Tube and pipe tubing — Tube & Pipe Tubing

Vacuum fittings and adapters — Vacuum Fittings & Adapters

Air distribution manifolds — Air Distribution Manifolds

Two, three and five valve manifolds — Valve Manifolds (2/3/5)

Ultra high pressure components — Ultra-High-Pressure Components

Double ferrule compression fittings — Double Ferrule Fittings

Proportional relief valves — Proportional Relief Valves

Pressure regulating and back pressure valves — Pressure Regulating & Back Pressure Valves

Ultra pure components — Ultra-Pure Components

Bleed and cleaning valves — Bleed & Cleaning Valves

Large bore bellows valves — Large-Bore Bellows Valves

Quality & Interchangeability Notes

100% dimensional interchangeability with international instrumentation fitting specifications — no re-engineering of existing layouts required.
All products supplied with material certificates; batch traceability maintained from barstock to finished part.
Custom sizes, materials and configurations available — contact our export team with your specification.

Instrumentation Fittings, Valves & Components