FEATURES

„ 316L Stainless steel top housing (standard)

„ Available in wide range of wetted materials for

process compatibility

„ Flushing port (101, 201, 301) provides for easy

cleaning of process

„ Continuous duty design contains process if

instrument is inadvertantly removed

„ NSF-61 Compliant - 200 316L Stainless steel only

TYPICAL USES

„ Oil and gas

„ Refineries

„ Chemical and petrochemical

„ Water and wastewater

„ NACE Compliant processes (Sour Gas Separation)

„ Biogas and biodiesel

SPECIFICATIONS

Connection Style:

100, 200, 300: Threaded

101, 201, 301: Threaded with flushing port

Process Connection:

1/4 to 1/2 NPT Female, 1/4 to 1 NPT Male

Instrument Connection:

1/4 to 1/2 NPT

MAWP:

200 psi to 2500 psi (5000 psi optional)

Refer to Seal Pressure & Temperature Guide

Fill Fluid:

See table 3 on page 3

Approvals:

CRN, NSF-61 Compliant 200 316L Stainless

Steel only

WETTED COMPONENTS

Diaphragm

Bottom Housing

Gasket

(metalic diaphragm materials only)

See table 1 on page 2

See table 2 on page 2

PTFE (rated for -150 ºF

to 500 ºF)

NON-WETTED COMPONENTS

Top Housing

Bolt/Clamp Rings

Nuts/Bolts

Standard

316L

St. steel

Carbon steel

Zinc plated

alloy steel

Optional

Monel® (XYM),

Titanium (XHB)

316L (XSE)

316L (XSE)

KEY BENEFITS

• Protects instrumentation from corrosive media

•Prevents pressure measuring instrument

from clogging

•Dissipates elevated process temperature

TEMPERATURE RATINGS

Temperature Rating

Metallic Diaphragms

Non-Metallic

Diaphragms

Threaded

450 °F/Refer to fill

fluid temperature limit

Refer to diaphragm

material and fill fluid

temperature limits

Welded (XDU)

480 °F/Refer to fill

fluid temperature limit

400 °F/Refer to

diaphragm material

and fill fluid

temperature limits

1 of 5

100/101, 200/201, 300/301 Threaded Diaphragm Seal

Data Sheet

All specifications are subject to change without notice. All sales subject to standard terms and conditions.

Ashcroft® and Trust the Shield® are trademarks and Gold ServiceSM is a service mark of Ashcroft Inc. The following

non-Ashcroft trademarks are the property of their respective owners: Carpenter 20®, Monel®, Hastelloy®, Viton®,

Duplex 2507®, Inconel®, Calflo®, Kalrez® and Neobee®. For more information, see Ashcroft Brands & Trademarks

©2024 Ashcroft Inc. 100-200-300_thread_seal_ds_RevL_09-09-24

ashcroft.com

| 1.800.328.8258 | Contact Us

Diaphragm Threaded

To Top Housing -

flexible design

Diaphragm Welded

or Bonded To Top

Housing

Diaphragm Clamped

Between Upper & Lower

Housing - flexible design for

elastomeric diaphragms

100 Series

200 Series

300 Series