Monoflange Needle Valves

Compact integrated solution for connecting process piping to pressure measurement systems, isolation and venting in a single forged body

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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 Monoflange Valves

Indra Monoflange valves provide a compact, integrated solution for connecting process piping to pressure measurement systems. Designed to replace traditional multi-valve assemblies, they combine isolation and venting functions within a single forged body. Available in different configurations, connection types and flange faces, with standard and fully customized designs engineered to satisfy the most demanding customer specifications and critical service conditions.

Compact Installation
Reduced Leak Paths
Weight & Support Optimization
Cost-Effective Solutiont

Technical Specifications

Pressure Rating: ASME 150 | ASME 300 | ASME 600 | ASME 900 | ASME 1500 | ASME 2500 | API 10000 | API 15000
Design: SB | SBB | DBB
Flange Face: Raised Face (RF) | Ring Joint (RTJ)
Connection In: 1/2" | 3/4" | 1" | 1½" | 2"
Connection Out: 1/4" NPT-F (optional) | 1/2" NPT-F | Flanged as inlet | 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:

Monoflange SBB & SB Needle Valves
Isolation and bleed functions integrated in a single forged body, space-saving solution for safety-critical installations
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Monoflange DBB Needle Valves
Double isolation and bleed in a single compact assembly, engineered for maximum process safety on flanged connections
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Precision Engineering for Critical Applications

Indra Monoflange needle valves are a compact, high-integrity alternative to traditional multi-valve assemblies for pressure instrument connections. Manufactured entirely in-house at our Italian facility near Milan, each monoflange is produced from a single forged body, eliminating the complexity of multiple flanged joints and significantly reducing the number of potential leak paths and fugitive emission sources.

The integrated design minimizes footprint and system weight, reducing vibration and mechanical stress and often eliminating the need for additional pipe supports. This translates directly into lower installation time, reduced procurement complexity, and simplified maintenance throughout the product’s service life.

Available in SB, SBB, and DBB configurations, in Flange/Flange or Flange/Threaded connection options, with flange faces in Flat Face (FF), Raised Face (RF), or Ring Joint (RTJ) finishes. All monoflange valves can be equipped with a safety locking provision, supporting both padlockable handles and locking pins to prevent unauthorized or accidental operation. Engineered versions for low temperature and cryogenic service are available, designed to withstand extreme conditions and ensure safe and efficient operation.

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.