Multiport Needle Valve
Multiple port configuration for instrument root valve applications.
Technical Specifications
| Type | Multiport / Block & Bleed |
| Size Range | 1/4" to 1/2" (6 mm to 15 mm) |
| Body Materials | SS316, Carbon Steel |
| Stem Design | SS316, Integral Needle |
| Packing | PTFE, Graphite |
| End Connections | Flanged, Threaded |
| Pressure Rating | Up to 6000 psi (414 bar) |
| Standards | ASME B16.34 |
Applications
Instrument manifolds, gauge isolation, calibration
About the Multiport Needle Valve
Multiport needle valve manifolds - supplied as 2-valve, 3-valve, and 5-valve assemblies machined from a single solid bar of SS316 or carbon steel - provide the complete instrument isolation, equalisation, and bleed function for pressure transmitters, differential pressure transmitters, gauges, and switches in a single compact block. The 2-valve manifold (block-and-bleed) comprises one isolation needle and one bleed needle - used for gauge and pressure transmitter isolation and atmospheric bleed. The 3-valve manifold adds one equalisation valve, enabling safe transmitter removal or re-ranging by equalising pressure across both transmitter chambers before breaking the connection. The 5-valve manifold adds upstream and downstream isolation on each leg plus equalisation and bleed, providing the complete DP transmitter connection solution.
Manifold bodies machined from a single piece of bar stock eliminate all internal connectors and fittings between valves, reducing the number of potential leak points to zero within the manifold body itself. Only the process and transmitter connections remain as external joints. This single-body construction is a significant reliability advantage over a manifold assembled from separate tubing and fitting components. Vajra Industrial Solutions supplies 2-valve, 3-valve, and 5-valve manifolds in SS316 and carbon steel with NPT or BSP process connections and ASME B16.5 RF or RTJ flanged transmitter connections, rated to 6,000 psi.
Where It's Used
Key industries and applications for the Multiport Needle Valve
DP transmitter connections
5-valve SS316 manifolds mounted directly on differential pressure transmitters for flow metering orifice plates, level measurement on process vessels, and density/specific gravity measurement; factory-assembled and tested to avoid field assembly errors
Pressure transmitter and gauge isolation
2-valve SS316 block-and-bleed manifolds on all pressure transmitters, gauges, and switches; allows isolation and bleed-down for instrument removal and calibration without line shutdown
NACE sour service instrumentation
SS316L or Alloy 20 5-valve manifolds for DP transmitters on sour gas and crude oil production wells and separators; NACE MR0175 material certification required for H2S-containing environments
Cryogenic and low-temperature service
SS316 3-valve and 5-valve manifolds with graphite packing for instrument connections on LNG, liquid nitrogen, and ethylene process lines; low-temperature ductility of SS316 maintained to -196°C
High-pressure wellhead and gas production
5-valve SS316 manifolds rated to 6,000 psi for wellhead pressure and differential pressure measurement; RTJ flange process connections for Class 900–1500 wellhead tubing and casing connections
How to Choose the Right Multiport Needle Valve
Select the manifold configuration based on the instrument type: 2-valve (block-and-bleed) for pressure gauges, thermowells, and pressure switches; 3-valve for pressure transmitters where safe removal and calibration at the transmitter is required; 5-valve for differential pressure transmitters measuring flow or level. Always specify the process connection type (NPT, BSP, or RTJ/RF flange) to match the process nozzle, and the transmitter connection (typically 1/2" NPT male or ASME B16.5 flange) to match the instrument. For sour service, request NACE MR0175 material certification.
Popular Configurations
Most commonly ordered specifications for the Multiport Needle Valve
Frequently Asked Questions
About Multiport Needle Valve - ordering, specs, delivery & compliance
What standards does the Multiport Needle Valve comply with?+
Our Multiport Needle Valve complies with ASME B16.34. All products are manufactured to international standards and come with full material test reports (MTR), dimensional inspection reports, and hydrostatic test certificates on request.
What materials are available for the Multiport Needle Valve?+
The Multiport Needle Valve is available in SS316, Carbon Steel. Material selection depends on your process fluid, temperature, pressure, and corrosion requirements.
What is the delivery lead time for Multiport Needle Valve?+
Standard stock sizes are available for immediate dispatch from our Vadodara warehouse. Custom sizes and special materials typically have a lead time of 2–6 weeks depending on specifications. We serve customers across India within 1–7 business days and export to the Middle East, Southeast Asia, Europe, and the Americas with full export documentation.
Can I get a custom Multiport Needle Valve for a specific application?+
Yes. Vajra Industrial Solutions supplies custom-engineered needle valves for specific process conditions. Submit your technical requirements - including pressure class, temperature range, fluid type, end connections, and any special trim or coating needs - via our RFQ form or WhatsApp, and our engineering team will respond within 24 hours.
What pressure ratings are available for the Multiport Needle Valve?+
The Multiport Needle Valve is available in pressure ratings of Up to 6000 psi (414 bar). Higher-pressure classes are available for critical service applications in oil & gas, power generation, and chemical processing.
How do I request a quote for the Multiport Needle Valve?+
You can request a quote by clicking the "Request Quote" button on this page, filling out our RFQ form at vajravyuh.com/rfq, emailing us at sales@vajravyuh.com, or WhatsApping us directly at +91-9979774557. Please include quantity, size, pressure class, material grade, and end-connection type for the fastest response.
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