Monoblock Needle Valves

Heavy-duty single-piece interface between process lines or vessels and pressure instruments, direct mounting with SB, SBB, DB, and DBB designs up to 15000 PSI

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Fire Safe: ISO 10497 – API 607 – API 6FA
Fugitive Emission: ISO 15848-1 & 2
PED 2014/68/EU
ATEX 2014/34/EU
CRN Canada (all provinces)
CU-TR for EAC Countries

Why Indra Monoblock Valves

Indra Monoblock needle valves provide a heavy-duty, single-piece interface between process lines or vessels and pressure instruments. Designed for direct mounting, they ensure reliable isolation while eliminating the complexity of traditional multi-valve “Christmas tree” assemblies. Available in SB, SBB, DB, and DBB designs, they deliver a more compact and reliable solution for high-pressure applications, with exceptional connection flexibility across threaded, flanged, welded, and hub configurations.

One-Piece Forged Body
Connection Versatility
Safety-Focused Design
Compact System Replacement

Technical Specifications

Pressure Rating: ASME 150 | ASME 300 | ASME 600 | ASME 900 | ASME 1500 | ASME 2500 | 6,000 PSI | 10,000 PSI | 15,000 PSI (optional) | API 10000 | API 15000 | Pipe Rating (BW/SW)
Design: SB | SBB | DB | DBB
Connection In: 1/4" (NPT or Welded) | 1/2" (NPT or Welded) | 3/4" (NPT or Welded) | 1" (NPT or Welded) | 1/2" Flanged | 3/4" Flanged | 1" Flanged | 1½" Flanged | 2" Flanged | Integral for tubing connection
Vent: 1/4" NPT-F (optional) | 1/2" NPT-F | Integral for tubing connection
Materials: C.S. A105 | C.S. A350 LF2 | SS 316/316L Dual Grade | Duplex F51 | Superduplex F53 | Superduplex F55 | Inconel 625 | Incoloy 825 | Monel 400 | Hastelloy C276 | Titanium | On demand NACE-compliant materials available upon request
Seal: PTFE | Graphite | On demand

Available Configurations

Choose the right configuration for your instrumentation requirements:

Monoblock SBB & SB Needle Valves
Shut-off and bleed integrated in a single body, compact and reliable solution for instrument isolation and venting in high-pressure service
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Monoblock DBB & DB Needle Valves
Double isolation and bleed in a single compact assembly, engineered for critical and high-pressure applications requiring maximum process safety
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Precision Engineering for Critical Applications

Indra Monoblock needle valves are a heavy-duty alternative to traditional multi-valve “Christmas tree” assemblies for direct instrument mounting on process lines and vessels. Manufactured entirely in-house at our Italian facility near Milan, each monoblock is built from a one-piece forged body providing superior strength and durability, rated up to 15,000 PSI.

The Monoblock series offers exceptional connection flexibility, accommodating threaded, flanged, butt-weld, socket-weld, and hub inlet/outlet combinations to ensure compact installation and reliable integration with process lines and pressure instruments across any project specification. The hub connection is a compact, clamp-style mechanical interface designed for high-pressure and subsea service, providing significant weight reduction and superior vibration resistance.

Available in SB, SBB, DB, and DBB designs, Monoblock valves feature anti-blowout stems and non-rotating tips for precise control and operator safety, with high-quality needle internals enabling easy servicing and reduced downtime. The series is a streamlined alternative to multi-valve manifolds, reducing weight, installation effort, and system complexity.

Materials range from Carbon Steel and Stainless Steel 316/316L to Duplex, Super Duplex, Inconel 625, Incoloy 825, Monel 400, Hastelloy C276, and Titanium, all NACE-compliant versions available upon request.