Coplanar 3 Way Manifold Valve

The coplanar 3-way instrumentation manifold valve is an advanced, highly integrated process interface block designed for direct flanged installation onto coplanar-style differential pressure transmitters (such as Rosemount 3051CD, Yokogawa EJA, and similar platforms). Forged and precision-machined from a single block of high-grade stainless steel, this space-saving layout incorporates two primary isolation (block) needle valves and a central equalization valve, augmented by dedicated processing vent/drain ports on the body casing. By establishing a direct face-to-face surface seal, it entirely supersedes conventional multi-jointed piping hookups. This drastically minimizes systemic footprint, weight, and critical fugitive emission leak pathways, allowing maintenance technicians to complete fast, safe zero-point checking and in-line recalibration loops.

Technical Specifications

• Manifold Design Configuration: Coplanar Direct-Mount / 板式共面一体化 3-Way Instrument Manifold

• Valve Component Layout: Two Primary Isolation (Block) Valves and One Central Equalizing Valve

• Body Material Construction: High-grade Forged 316 Stainless Steel (ASTM A182 F316 / ASTM A479)

• Stem Tip Architecture: Non-rotating hardened chrome-plated stem tip to prevent seat scoring and extend wear life

• Process Side Connections: Standard dual 1/2" NPT Female ports (or alternative flanged adapter connections)

• Instrument Side Interface: Precision-machined direct-mount coplanar face complying with international transmitter sealing patterns

• Vent & Drain Configuration: Integrated auxiliary vent/drain paths equipped with high-pressure threaded hex plugs

• Flange Bolting Alignment: Standard 4-hole coplanar configuration designed for high-tensile 7/16-20 UNF bolts

• Nominal Pressure Rating: 6000 psi / PN400 (Sustaining up to 41.3 MPa / 413 bar at ambient operating conditions)

• Maximum Working Temperature (PTFE): Up to 232°C (450°F) delivering exceptional corrosion passivation

• Maximum Working Temperature (Graphite): Up to 648°C (1200°F) for severe thermal steam insulation environments

• Packing Seal Compound: Pre-compressed chevron-style Teflon (PTFE) standard / High-purity flexible Grafoil optional

• Handle Assembly Design: Ergonomic stainless steel T-bar handles with distinctive operational color-coded dust caps

• Handle Security Fitting: Integrated locking socket set-screws within the handle hub to counter severe vibration loosening

• Safety Feature: Structural anti-blowout lower stem configuration preventing dynamic stem ejection under line spikes

• Orifice Clearance Size: 0.156 inch (4.0mm) straight bore for instantaneous, lag-free pressure transmission

• Flow Coefficient (Cv Rating): 0.52 maximum when needle stems are fully retracted

• Flange Sealing Interface: High-integrity machined ring grooves complete with premium Teflon (PTFE) or Viton sealing gaskets

• Testing Guidelines Met: 100% factory hydrostatic shell and pneumatic seat checked to API 598 / BS EN 12266

• Sour Gas Compatibility: Metallurgical treatment fully certified to meet NACE MR0175 / ISO 15156 limits

• Traceability Protocols: Original material heat tracking code and pressure boundaries permanently laser-etched on the block body