Yokogawa Corporation of America2 Dart Road Newnan, Georgia U.S.A. 30265Tel: 1­ 800­888­6400   Fax: 1­770­254­0928

GS 1C22-AGC-02©Copyright Aug. 2005

2nd Edition

GeneralSpecifications

GS 1C22-AGC-02

M4T3-Valve Manifolds forDifferential Pressure

■ INTRODUCTION

The M4 three-valve manifolds weredesigned for mounting on differentialpressure transmitters having 2 1/8”center-to-center connections.

The M4T directly mounts to thetransmitter, replacing the processconnectors by providing 1/2” NPTprocess connections. M4A manifoldsare also available and provide aflange face for the processconnectors to be mounted.

Three-valves manifolds are the most commonlyused manifolds. The equalization valve allows thetransmitter to be pressurized with line or vesselpressure before differential pressure is applied forflow or level measurement.

■ FEATURES

• Pipestand Mounting

The optional mounting bracket allows the manifold

to be mounted prior to the installation of the

transmitter and easily removed when necessary.

• Stem Back-Out Prevention

This eliminates stem blowout, or accidental

removal while in operation

• Rolled Stem Threads

Unlike cut threads, rolled stem threads have more

strength and longer life.

• Field replaceable Soft Seals

The seat insert can be replaced without removing

the valve from the line.

• Integral Hard Back Seats

Hard back seats protect against stem blowout and

form a secondary seal.

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All rights reserved. Copyright © 2005, Yokogawa Electric Corporation. Subject to change without notice. GS 1C22-AGC-02 August 2005

■ DIFFERENTIAL PRESSURE MANIFOLDS - M4T SPECIFICATIONS

■ NOTES

1. Approximate valve weight: 4.5 lb. [2.0 kg].

Metal seat

0.156-inch [4.0 mm] diameter orifice.

Valve Cv 0.36 maximum.

Soft seat

0.187-inch [4.8 mm] diameter orifice.

Valve Cv 0.83 maximum.

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■ M4T SPECIFICATIONS

STANDARD MATERIALS

• METAL SEAT

VALVE BODY1 BONNET STEM BALL

SS A479-316 A479-316 A276-316 316 SS

SG2 A479-316 A479-316 Monel® 400 Monel K500

• SOFT SEAT

VALVE BODY BONNET STEM SEAT

SS A479-316 A479-316 A276-316 Delrin®

SG2 A479-316 A479-316 Monel 400 Delrin

SG33 Hastelloy® C276 Hastelloy C276 Hastelloy C276 Delrin

■ PRESSURE AND TEMPERATURE RATINGS

• METAL SEAT

VALVE PACKING RATINGS5

SS Teflon® 6000 psig @ 200°F [414 barg @ 93°C]4000 psig @ 500°F [276 barg @ 260°C]

SS Graphite 6000 psig @ 200°F [414 barg @ 93°C]GRAFOIL® 1500 psig @ 1000°F [103 barg @ 538°C]

SG2 or Teflon 6000 psig @ 200°F [414 barg @ 93°C]SG33 4000 psig @ 500°F [276 barg @ 260°C]

SG2 or GRAFOIL 6000 psig @ 200°F [414 barg @ 93°C]SG33 1500 psig @ 1000°F [103 barg @ 538°C]

• SOFT SEAT

VALVE PACKING RATINGS5

SS Viton® O-ring with 6000 psig @ 200°F [414 barg @93°C]Teflon back up ring

SG2 Teflon 6000 psig @ 200°F [414 barg @93°C]SG33

■ NOTES

1. Instrument mounting kit furnished with the M4 includes (4) A193-B7 bolts and (2) Rulon - Ceramicor GRAFOIL flange gaskets to match bonnet packing.2. SG (Sour Gas) meets the of NACE MR-01-75 (2002) and NACE MR0103-20033. SG3 (Sour Gas) meets the requirements of NACE MR-01-75 (2003)4. 316 SS bolts lower pressure ratings to a maximum of 4500 psi [310 barg]. Consult factory for fullrating with 316 SS bolts.

All rights reserved. Copyright © 2005, Yokogawa Electric Corporation. Subject to change without notice. GS 1C22-AGC-02 August 2005

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All rights reserved. Copyright © 2005, Yokogawa Electric Corporation. Subject to change without notice. GS 1C22-AGC-02 August 2005

Notes

Accessories

1. 316 SS bolts lo

M1244AS-A Stainless steel bracket.

M1244BK-01 Rulon - Ceramic gasket.

M1244BK-02 Grafoil gasket.

wer pressure ratings to amaximum of 4500 psi [310 barg]. Consultfactory for full rating with 316 SS bolts.

M4T V I S – 4 – T – SG

Valve Type

Bonnet Packing

V – Teflon!

Seat

I – Integral (body material)

Body Material

S – SS, A479-316

Process Connections

Always

4 – 1/2-inch FNPT

-T - Transmitter Gasket ( ID: 0.87")

Options

Ordering Information – Metal Seat

–AM Carbon steel mounting bracket.

–OC Cleaned for Oxygen Service.

–SG Sour Gas meets the requirements of NACE MR0175-2002.and NACE MR0103-2003. Monel trim.(SS valves only) (not available for O-ring packed valves)

–SG3 Sour Gas meets the requirements of NACE MR0175-2003.Requires Body Material J(Hastelloy C trim).

–TAPT Torqued attachment and pressure test.

–ATCH Attached to transmitter hand tight.

–AMS Stainless steel mounting bracket.

–SSC1 316 Flange Bolt (B8M) - Maximum pressure rating 4500 psi [310 barg]

–TB Test Ports - Bottom of Manifold (1/4-inch FNPT)

M4T – 3-Valve Manifold, FNPT x Flange

J – Hastelloy C-276

■ M4T SPECIFICATIONS

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All rights reserved. Copyright © 2005, Yokogawa Electric Corporation. Subject to change without notice. GS 1C22-AGC-02 August 2005

Trademarks

Teflon, Delrin are registered trademarks of Dupont, Hastelloy C is a registered trademark of Haynes

International, Monel is a registered trademark of INCO Alloys/Special Metals.

■ M4THP B31.1 AND B31.3 MEETS MSS-SP-105

M1244AS-A Stainless steel bracket.M1244BK-01 Rulon - Ceramic GasketM1244BK-02 Grafoil Gasket

S – 4 – T

Always-T - Transmitter Gasket ( ID: 0.87")

x Flange x 1/4-inch FNPT