102/103, 202/203, 302/303 Flanged Diaphragm Seal

Data Sheet

All specifications are subject to change without notice.

All sales subject to standard terms and conditions.

© 2021 Ashcroft Inc. 102_flanged_seal_ds_RevD_02-17-21

ashcroft.com

info@ashcroft.com

1.800.328.8258

of 5

1

Diaphragm Threaded

To Top Housing -

flexible design

Diaphragm Welded

or Bonded To Top

Housing - eliminates

leak path

Diaphragm Clamped

Between Upper & Lower

Housing - flexible design for

elastomeric diaphragms

100 Series

200 Series

300 Series

SPECIFICATIONS

Connection Style:

102, 202, 302: Flanged

103, 203, 303: Flanged with flushing connection

Process Connection:

½, ¾, 1, 1½, 2 or 3 NPS

Instrument Connection:

1/4 or ½ NPT Female

Approvals:

CRN

TABLE 1 - FLANGE RATINGS

STAINLESS STEEL FLANGE

Maximum Allowable Pressure (psi)

Temp.

(°F)

FLANGE CLASS

150

300

600

900

1500

2500

<1000

275

750

1440

2160

3600

6000

200

230

600

1200

1800

3000

5000

300

205

540

1075

1615

2690

4480

400

190

495

995

1490

2485

4140

500

170

465

930

1395

2330

3880

600

140

440

885

1325

2210

3680

650

125

430

865

1295

2160

3600

700

110

420

845

1265

2110

2520

750

95

415

825

1240

2065

3440

800

80

405

810

1215

2030

3380

850

65

395

790

1190

1980

3300

900

50

390

780

1165

1945

3240

950

35

380

765

1145

1910

3180

10000

20

355

710

1065

1770

2950

CARBON STEEL FLANGE

Maximum Allowable Pressure (psi)

Temp.

(°F)

FLANGE CLASS

150

300

600

900

1500

2500

<1000

285

740

1480

2220

3705

6170

200

260

675

1350

2025

3375

5625

300

230

655

1315

1970

3280

5470

400

200

635

1270

1900

3170

5280

500

170

600

1200

1795

2995

4990

600

140

550

1095

1640

2735

4560

650

125

535

1075

1610

2685

4475

700

110

535

1065

1600

2665

4440

750

95

505

1010

1510

2520

4200

800

80

410

825

1235

2060

3430

850

65

270

535

805

1340

2230

900

50

170

345

515

860

1430

950

35

105

205

310

515

860

10000

20

50

105

155

280

430

WETTED COMPONENTS

Diaphragm

Bottom Housing

Gasket

See table 2 on page 2

See table 3 on page 2

PTFE

NON-WETTED COMPONENTS

Top Housing

Flange Rings

316L SS (standard), Monel®, titanium

Carbon steel

KEY BENEFITS

•Flushing port provides ease of cleaning

•Dual containment for safety

FEATURES

316L stainless steel top housing (standard)

A thin PTFE gasket between the diaphragm/bottom

housing ensures a leak-tight, corrosion resistant seal

Continuous duty design prevents loss of process fluid if

pressure instrument is removed or fails

Modular design allows for a suitable combination of

wetted and non-wetted materials for every application

TYPICAL USES

Oil and gas

Refineries

Chemical and petrochemical

Water and wastewater

Biogas and Biodiesel

NACE compliant process (Sour gas separation)