3-Valve Instrument Manifold – Direct Mount (Coplanar, Flanged Transmitter)

For differential pressure measurement on flanged transmitters requiring reliable isolation, equalization control, and secure shut-off performance in high-pressure process environments.

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3-Valve Instrument Manifold – Direct Mount (Coplanar, Flanged Transmitter)

3-Valve Instrument Manifold – Direct Mount (Coplanar, Flanged Transmitter)
3-Valve Instrument Manifold – Direct Mount (Coplanar, Flanged Transmitter)
3-Valve Instrument Manifold – Direct Mount (Coplanar, Flanged Transmitter)
3-Valve Instrument Manifold – Direct Mount (Coplanar, Flanged Transmitter)

product introduction

The 3-valve coplanar manifold for flanged differential pressure transmitters provides reliable isolation and equalization functions. Back-seating at full open position enhances sealing safety during calibration and maintenance. The hardened, non-rotating lower stem minimizes friction on packing and internal components. A screw-locked handle ensures stable operation, while stem thread lubrication remains isolated from the process medium. All manifolds are pressure-tested under rated working pressure before delivery.

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Product Description

The manifold integrates two isolation valves and one equalizing valve in a compact coplanar body for direct transmitter installation.
Back-seating at the full-open position improves sealing safety during calibration and maintenance operations.

A hardened non-rotating lower stem minimizes packing friction and internal wear, ensuring smooth repeated operation.
The screw-locked handle provides stable valve positioning, while the stem thread lubrication remains isolated from the process medium to maintain cleanliness and durability.

instrument manifold valves

No.Component316 Stainless Steel (Material Grade / ASTM Spec.)Alloy C-276 (Material Grade / ASTM Spec.)
1HandleAluminum Alloy Aluminum Alloy
2Set Screw304 Stainless Steel304 Stainless Steel
3Packing Gland304 Stainless Steel / A479 304 Stainless Steel / A479
4Upper Valve Stem316 Stainless Steel / A479 304 Stainless Steel / A479
5Lock NutStainless Steel Stainless Steel
6Bonnet316 Stainless Steel / A479Alloy C-276 / B574
7Packing Gland Ring316 Stainless Steel / A479316 Stainless Steel / A479
8PackingPTFE or GraphitePTFE or Graphite
9Groove PinStainless SteelStainless Steel
10Lower Valve StemHardened 316 Stainless Steel / A479Alloy C-276 / B574
11Valve Body316 Stainless Steel / A479; 316 Stainless Steel / A182Alloy C-276 / B564
—LubricantMolybdenum Disulfide-BasedMolybdenum Disulfide-Based

 

instrument manifold valves

 

Features & Functions

  • Direct coplanar mounting to flanged DP transmitters
  • Isolation and equalization functions in one compact body
  • Back-seat sealing for safe maintenance and calibration
  • Non-rotating lower stem to reduce packing wear
  • Screw-locked handle for stable operation
  • Process-isolated stem lubrication design
  • Compact manifold block structure

 

Product Advantages

  • Reliable sealing during servicing due to back-seat design
  • Reduced stem and packing wear from non-rotating stem structure
  • Stable valve positioning with locked handle mechanism
  • Clean and durable stem threads isolated from process media
  • Compact direct-mount installation reduces leakage points
  • Pressure-tested reliability before shipment

 

3-Valve Instrument Manifold – Direct Mount (Coplanar, Flanged Transmitter)

Our Company Advantages

  • 16+ years specialized in pressure testing and pneumatic boosting equipment R&D and manufacturing
  • Annual production capacity exceeding 1000+ equipment sets
  • Trusted by 8000+ global customers
  • National High-Tech Enterprise with 28+ patents
  • Engineering team with 10+ years industry experience
  • Member of China Special Equipment Industry Association
  • Member of National Instrumentation Standardization Committee
  • ISO 9001 certified quality management system
  • CE certified products for international compliance
  • Focused on mid-to-high-end industrial instrumentation market

 

Applications

  • Differential pressure transmitter installation
  • Flow measurement systems
  • Level measurement using DP transmitters
  • Process control instrumentation loops
  • Calibration and maintenance isolation systems

 

Quality Assurance & Testing

  • 100% pressure sealing test before shipment
  • Thread and sealing inspection control
  • Stem operation cycle verification
  • Dimensional inspection per drawing
  • Assembly torque and leakage check
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