Differential Pressure Gauge 5 Valve Manifold

The block-type (integrated/plate-mounted) 5-way instrumentation manifold valve is a heavy-duty fluid control block engineered for direct coupling with differential pressure (DP) gauges, switches, and transmitters. Machined from a single solid block of high-integrity forged stainless steel, this valve configuration integrates five separate needle valves: two for main process isolation, one central valve for line equalization, and two dedicated bleed or vent ports with plugs. This sophisticated design allows field technicians to systematically isolate process streams, safely vent trapped line pressure inside the instrument cavities, and perform highly precise zero-point calibrations on the gauge. Its compact block framework entirely eliminates redundant external fittings, minimizing potential leak paths and optimizing spatial distribution in high-vibration processing plants.

Technical Specifications

• Manifold Design Configuration: Block-Type / Integrated Plate / 一体化五阀组 5-Way Instrument Manifold

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

• Body Material Construction: Premium Forged 316 Stainless Steel / 304 Stainless Steel (ASTM A182 / ASTM A479)

• Stem Tip Architecture: Non-rotating hardened chrome stem tip to eliminate seat galling and scratch-induced tracking

• Process Side Connections: 1/2" NPT Female or flanged process ports according to installation layouts

• Instrument Side Connections: Direct flat manifold face mounting or 1/2" NPT Female instrument coupling

• Vent/Bleed Port Configuration: Two 1/4" NPT or 1/2" NPT Female vent paths equipped with matching heavy-duty hex plugs

• Nominal Pressure Rating: Standard 6000 psi / PN400 (Capable of sustaining up to 413 bar at ambient conditions)

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

• Maximum Working Temperature (Graphite): Up to 648°C (1200°F) for extreme thermal steam and root isolation loops

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

• Handle Assembly Layout: Color-coded metallic T-bar handles with distinctive operational dust caps (Blue: Isolate, Green: Equalize, Red: Vent)

• Handle Locking Mechanism: Integrated locking socket set-screws within the handle body to counter vibration loosening

• Safety Integration: Full structural anti-blowout lower stem configuration preventing dynamic stem ejection under line spikes

• Orifice Clearance Dimension: 0.156 inch (4.0mm) precision straight-bore flow path for instant signal transmission

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

• Sealing Interface Configuration: Machined metal-to-metal integral body seat guaranteeing low assembly torque and bubble-tight shut-off

• Testing Standards Complied: 100% factory hydrostatic shell and pneumatic seat integrity double-checked to API 598 / BS EN 12266

• Sour Gas Suitability: Fully certified metallurgy meeting NACE MR0175 / ISO 15156 environmental limits

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