Three Valve Manifold – Bar Type Direct Mount (Pipe × Flange Configuration)
Arrotop is a steadfast manufacturer and supplier of Three Valve Manifolds in a bar-type, direct-mount configuration (Pipe × Flange). Designed for use with pressure gauges, transmitters, and switches, this robust assembly integrates block, equalizing, and vent valves into a single compact unit for secure and efficient instrument control.
The pipe × flange design allows direct mounting to flanged transmitters or process headers—ideal for inline applications where stability and ease of service are essential.



What is a Three Valve Bar-Type Manifold (Pipe × Flange)?
A Three Valve Bar-Type Manifold features:
- One block valve for isolating the instrument
- One equalizing valve to balance pressure during calibration
- One vent/bleed valve for safe depressurization
- Pipe inlet (threaded or welded) and a flanged outlet for direct connection
This configuration enables technicians to isolate, equalize, and vent pressure within the instrument line while maintaining uninterrupted process flow—perfect for precision measurement and inline installations.
Key Features
- Three-valve assembly: isolate, equalize, vent
- Pipe × Flange end connections (½″, ¾″, 1″ NPT/BSP to ANSI/ASME/BS flange)
- Direct flange mounting for stable installation
- Designed for pressures up to 6,000 psi, with 5× hydrostatic testing
- Body materials: 316/316L Stainless Steel, Duplex, Monel, Hastelloy, Carbon Steel
- Non-rotating stem tip and blowout-proof stem ensure dependable shut-off
- Multiple gland packing options: PTFE, graphite, others
- Compact, corrosion-resilient bar-type construction
Looking for a rugged, compact manifold with direct flange mount?
Get in touch with Arrotop for technical assistance, product datasheets, or to request a quote today.