Fluid, piping & valves
Instrumentation valve manifolds
Instrument valve manifolds in 2-valve, 3-valve and 5-valve configurations for isolating, equalising, venting and calibrating pressure and differential pressure transmitters and gauges without shutting down the process.
Overview
An instrument manifold combines several needle-type valves in one block that mounts directly to a transmitter or gauge. A 2-valve manifold provides block and bleed for a single pressure instrument. A 3-valve manifold has two block valves and an equaliser for a differential pressure transmitter. A 5-valve manifold adds a second equaliser and a bleed valve with two vent connections.
The 3-valve and 5-valve models have 1/2 in female NPT connections at 54 mm (2 1/8 in) centres. PTFE packing is standard, with graphite packing for higher temperatures. Bodies are listed in stainless steel, mild steel, duplex and nickel-copper alloy, and block-and-bleed gauge manifolds are offered from 1/4 in to 1 in.
Selecting a manifold
Choose the configuration for the instrument type, then confirm the process and instrument connection pattern, mounting (direct or remote), body material, packing and pressure-temperature conditions. Matching the centre distance to the transmitter flange simplifies installation and avoids adapters between the manifold and the instrument.
Range overview
- Types and variants
- 2-Valve Manifolds
- 3-Valve Manifolds
- 5-Valve Manifolds
- Block-and-Bleed Gauge Manifolds
- Single Block-and-Bleed Manifolds
- H-Series Manifolds
- Duplex Manifolds
- Nickel-Copper Alloy Manifolds
- Materials and grades
- SS 304
- SS 316
- Mild Steel
- Duplex Stainless Steel
- Monel 400
- PTFE Packing
- Graphite Packing
- Size range
- 3 and 5-Valve: 1/2 in Female NPT at 54 mm (2 1/8 in) Centres
- Gauge Manifolds: 1/4 in to 1 in
- Pressure / temperature
- 6000 psi standard working pressure with PTFE packing
- 3000 psi to 10000 psi (block-and-bleed gauge manifold)
- Hydrostatic body test 620 bar, seat test 413 bar, pneumatic seat test 60 bar at 25 °C (gauge manifold)
- Connections and interfaces
- 1/2 in Female NPT
- Male and Female Thread
- Features
- Block, Equalise, Bleed and Vent Functions
- Direct Mounting to Transmitters
- In-Place Calibration
Exact specifications depend on the variant, material and size. Confirm ratings and certification against the datasheet or with our engineers before ordering.
Applications
- Differential Pressure Transmitters
- Pressure Transmitters
- Pressure Gauges and Switches
- Impulse Line Connections
Industries
- Oil and gas
- Chemical
- Petrochemical
- Power generation
- Marine
Information that speeds up a quotation
Share what you know. Anything you are unsure of can be marked “not known” — our engineers will help confirm it.
- Valve type
- Port
- Flow direction
- Pressure
- Temperature
- Cv
- Material
- End connection
- Actuation
- Standard
Need a datasheet?
Add this family to your enquiry list and mention the variant — we will send the relevant technical documents.
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Related solutions and guides
Frequently asked questions
How do I choose between 2, 3 and 5-valve manifolds?
A 2-valve manifold suits single-point pressure instruments, giving isolation and bleed. A 3-valve manifold is the basic choice for differential pressure transmitters. A 5-valve manifold adds an extra equaliser and a bleed with vent connections, which helps when transmitters are calibrated in place or the media must be vented under control.
What information is needed for a manifold quote?
Give configuration, process and instrument connections, centre distance, mounting style, body material, packing, design pressure and temperature, media and quantity. A transmitter model or datasheet helps confirm the mounting pattern. You can request material certificates and test records. Note any special packing needs as well.
Ready to specify instrumentation valve manifolds?
Send the details you have — quantities, sizes, drawings or a part number. Unknowns are fine.