2 Way Manifold Valve L Type

The L-type (P-type/coplanar) 2-way instrumentation manifold valve is a highly efficient, compact fluid control block tailored for direct flange mounting to gauge or absolute pressure transmitters (such as EJA430, Rosemount 3051, and E+H series). Machined from a single piece of premium forged 316 stainless steel bar stock, this valve block integrates one block/isolation valve and one vent/bleed valve. This design allows process engineers to smoothly isolate the instrument from line pressure and safely drain or vent the trapped process fluid into a waste stream before routine calibration, sensor replacement, or zero-point validation. It eliminates unnecessary pipe fittings, minimizing potential fugitive emission leak paths and optimizing installation space.

Technical Specifications

• Manifold Design Configuration: L-Type / P-Type / Coplanar 2-Way Instrument Manifold

• Valve Component Layout: One Primary Isolation Valve and One Vent / Bleed / Test Valve

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

• Stem Tip Design: Non-rotating hardened chrome-plated stem tip to prevent seat scratching and extend service life

• Process Side Connection: 1/2" NPT Female thread (or integrated compression fitting union)

• Instrument Side Connection: Direct coplanar flange face mounting matching standard pressure transmitters

• Flange Bolting Blueprint: Standard dual-hole pattern designed for high-tensile 7/16-20 UNF mounting bolts

• Nominal Pressure Rating: 6000 psi / PN400 (Up to 41.3 MPa / 413 bar at ambient temperature)

• Maximum Temperature (PTFE Packing): Up to 232°C (450°F) for general petrochemical loops

• Maximum Temperature (Graphite Packing): Up to 648°C (1200°F) for extreme severe steam applications

• Packing Seal Compound: Chevron-style Teflon (PTFE) standard for low operating torque and bubble-tight sealing

• Handle Assembly Layout: Ergonomic color-coded metallic T-bar handles (Blue for Isolate, Red for Vent)

• Handle Security Fitting: Integrated set-screws within the handle hub to prevent vibrational loosening

• Safety Mechanism: Structural anti-blowout lower stem configuration to optimize field operator safety

• Orifice Clearance Size: 0.156 inch (4.0mm) precision straight-through bore for precise signal transmission

• Flow Coefficient (Cv Rating): 0.45 fully unseated to ensure optimized fluid response times

• Flange Sealing Interface: High-integrity grooves equipped 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

• Environmental Standards: Certified low-emission packing design conforming to ISO 15848-1 requirements

• Sour Gas Compatibility: Metallurgical treatment fully compliant with NACE MR0175 / ISO 15156 guidelines

• Traceability & Certification: Heat code tracking number laser-etched on the valve block with EN 10204 3.1 certification