Coplanar 5 Way Manifold Valve

The coplanar 5-way instrumentation manifold valve is a high-integrity, space-saving process interface assembly custom-designed for direct coupling with coplanar-style differential pressure (DP) transmitters, notably the Rosemount 3051CD and Yokogawa EJA series. Precision-machined from a premium block of forged 316 stainless steel, this integrated architecture combines five essential needle valves: two for main process stream isolation, one central valve for fluid equalization, and two dedicated bleed/vent ports. By mating directly to the face of the transmitter sensor with high-tensile bolts, it completely replaces elaborate hookups made of traditional pipe lengths and nipples. This eliminates multiple fugitive emission leak pathways, reduces weight, and allows technicians to safely perform loop testing, zero-point validation, and online calibration.

Technical Specifications

• Manifold Design Configuration: Coplanar Direct-Mount / 板式共面一体化 5-Way Instrument Manifold

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

• 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 eliminate seat wear and scoring

• Process Side Connections: Dual 1/2" NPT Female ports conforming to standard line-pipe hookups

• Instrument Side Interface: Precision-machined direct-mount coplanar face matching standard pressure transmitter flange surfaces

• Vent & Drain Configuration: Dual auxiliary vent/bleed paths equipped with high-pressure threaded hex blanking plugs

• Flange Bolting Alignment: Standard 4-hole coplanar footprint engineered for high-tensile 7/16-20 UNF mounting 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) for outstanding chemical resistance and durability

• Maximum Working Temperature (Graphite): Up to 648°C (1200°F) to withstand severe high-pressure thermal steam loops

• 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 color-coded dust caps for quick function identification

• Color Code Scheme: Blue handles for Isolation, Green for Equalization, and Red for Vent/Bleed control

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

• Safety Feature: Structural anti-blowout lower stem design preventing dynamic stem ejection under high line surges

• Orifice Clearance Size: 0.156 inch (4.0mm) precision straight bore for instant, lag-free transmission of process parameters

• Flow Coefficient (Cv Rating): 0.52 maximum rating when needle stems are retracted to the fully unseated position

• 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 standards

• Sour Gas Compatibility: Metallurgical and hardening treatment fully compliant with NACE MR0175 / ISO 15156 limits

• Traceability Protocols: Original material heat tracking code, shell pressure boundary, and material grade permanently laser-etched on the valve block