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Zeroing Manifold®
D/A Products Dial-A-Function Model Selector ZM6 Outline Drawing Dial-A-Function Design How to Order ZM6 Previous Dial-A-Function Model Next Dial-A-Function Model

Typical Installation
ZM6 Typical Installation
  • Automatic fool-proof zeroing
  • Mounts between the transmitter and oval flanges to become an integral part of the transmitter
  • Large, 1/4" straight-thru roddable ports
  • Unique bonnetless tapered plug design
  • Adjustable packing nut stops interport and stem leakage
  • No metal to metal contact
  • Barstock construction
  • Bubble tight seals
  • Directional arrowhead handle
  • All parts replaceable in-line
  • Compact-only 1-1/4" thick

The patented D/A MULTIMATIC Service, Block and Zeroing manifold offers a high degree of sophistication for those processes which require frequent zero check, instrument isolation, field recalibration or process line blowdown. Rather than manipulating a cluster of independent needle valves, the MULTIMATIC utilizes two 3-way valves working together to provide all the functions of a bulky 7-valve system. Since all the porting and sequencing is properly interlocked, the service technician easily and positively selects the desired function by switching the two handles to the permanently marked positions.

This unique "dial-a-function" method drastically reduces the costly errors of improper operation and confusion inherent in multi-handled manifolding systems.

The D/A MULTIMATIC - The Ultimate in Convenience, Serviceability and Economy in Flow Transmitter Manifolding.

ZM6 Operation With valve handle in the NORMAL position, the ZM6 is in the service mode with both process inlets open and the equalizing port blocked.

By dialing the Zeroing Valve handle to the ZERO position, the ZM6 is automatically switched to the zeroing mode which completely and properly prepares the transmitter for zeroing by (1)First blocking one inlet impulse line and (2)then operating the equalizing port which bypasses the blocked inlet to equalize the P cell at the process pressure. Because it basically operates like a 3-way valve, this forced zeroing sequence provides fool-proof operation and safety.

After correcting for zero offset, the transmitter is returned to service by simply redialing the handle to the NORMAL position, which again, correctly sequences back to the service mode by closing the equalizer first then reopening the blocked inlet.
Max Ratings:
  6000psi @ -65ºF to 150ºF
  2500psi @ 220ºF
  6000psi @ 220ºF
  2500psi @ 520ºF
 Flanged instrument x Flanged process
Design Codes:

ANSI B31.1, B16.5, NACE MR-01-75(special order)
Material Codes:
Barstock, A479 - 316, A276-316;
Cast, ASTM-A743 CF3M, ASTM-A-351 CF3M, A 276-316.
Materials of Construction:
 Body: 316SS or nickel plated C.S.
 Wetted Plug: 316SS
 Plug Liner: Teflon or Ryton reinforced Teflon
 Face Seals: Ryton reinforced Teflon
 Non-Wetted Trim: 303SS
 Handle: Cast aluminum arrowhead - PVC coated

Exotic materials: Hastelloy C, Monel, Alloy 20, etc. consult factory.
All units are supplied with 4 transmitter mounting bolts and 2 face seals.
Assurance of Satisfaction: When properly installed, D/A guarantees the ZM6 to be free from defective workmanship and material under normal use and service for a period of one year from date of shipment.

Code  Dial-A-Function, Transmount Zeroing Manifold®
ZM6  Flanged (instrument) x Flanged (process)
| Code   Plug Liner
| T  Teflon
| R  Ryton reinforced Teflon
| | Code  Body
| | S  Stainless Steel, 316
| | C  Nickel Plated C.S.
| | | Code  Wetted Plug
| | | S  Stainless Steel, 316
| | | | Code  Options
| | | | EH   3" extended arrowhead handles
| | | | |  
Model Number


D/A Manufacturing Co., Inc.
Hwy 86 East or P.O. Box T
Tulia, TX  79088-0920 USA
Phone: (806)995-2316
FAX: (806)995-4601