3 Way Manifold Valve T Type

This professional T-type 3-way instrumentation manifold valve is expertly machined from 316L stainless steel for differential pressure transmitters. Featuring two inline isolation valves and one center equalizing valve, it provides reliable block and equalize functions, allowing safe online calibration and zero-checking in high-pressure oil, gas, and industrial process pipelines.

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The T-type (horizontal inline/T-shaped) 3-way instrument manifold valve is engineered for standard direct-mount installations where process lines are fed horizontally into a differential pressure transmitter. Machined from a single block of premium forged 316L stainless steel, it integrates two primary block/isolation needles and a central equalization needle. This inline flow configuration enables process technicians to easily equalize the high and low-pressure sides before isolating the transmitter for standard routine zero-point adjustments or loop maintenance. It entirely replaces bulky traditional multi-valve piping hookups, significantly shrinking the physical footprint, weight, and potential fugitive leak pathways.

Technical Specifications

Manifold Design Configuration: T-Type / Horizontal Inline / 丁字型 3-Way Instrument Manifold
Valve Component Layout: Dual Isolation (Block) Valves and One Central Equalizing Valve
Body Material Construction: High-grade Forged 316L Stainless Steel (ASTM A182 F316L)
Stem Tip Configuration: Non-rotating hardened chrome stem tip to eliminate seat wear and galling
Process Side Connection: 1/2" NPT Female threads (or compression fittings with extended tube stubs)
Instrument Side Connection: Direct flange-mount interface with standard 2-1/8 inch (54mm) center-to-center spacing
Bonnet Sealing System: Heavy-duty bonnets with safe metal-to-metal body-to-bonnet primary seals
Nominal Pressure Rating: 6000 psi / PN400 (Equivalent to 42.0 MPa / 420 bar at ambient temperature)
Maximum Working Temperature (PTFE): Up to 232°C (450°F) for general instrumentation lines
Maximum Working Temperature (Graphite): Up to 648°C (1200°F) for extreme severe service
Packing Seal Compound: Two-piece chevron Teflon (PTFE) standard / Flexible Graphite optional
Handle Assembly Design: Robust metallic T-bar handles with color-coded dust caps (Blue for Isolate, Green for Equalize)
Safety Feature: Structural anti-blowout lower stem design preventing displacement under heavy fluid surges
Orifice Clearance Size: 0.156 inch (4.0mm) straight-through flow design for accurate signal transmission
Flow Coefficient (Cv Rating): 0.52 fully unseated for low lag-time response
Flange Gasket Interface: Precision-machined grooves equipped with high-integrity PTFE/Viton sealing rings
Testing Guidelines Met: 100% factory hydrostatic shell and pneumatic seat checked to API 598/BS EN 12266
Environmental Compliance: Certified low-emission packing systems conforming to ISO 15848-1 standards
Sour Gas Compatibility: Materials fully compliant with NACE MR0175 / ISO 15156 regulations
Body Marking Traceability: Heat code tracking, working pressure, and material grade permanently laser-etched on the valve block