Allspecifications are subject to change without notice.

All sales subject to standard terms and conditions.

©2021 Ashcroft Inc. 310-315_seal_ds_RevD_07-15-21

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info@ashcroft.com

1.800.328.8258

Data Sheet

310, 315 All-Welded “Mini” Diaphragm Seal

of 3

2

Filling Fluid Table

Fill

Service

Connection to Instrument

Temperature Range °F

Code

Glycerin

Pressure

Direct Only

0/400

CG

Silicone

Pressure/Vacuum

Direct or Flexible Line

–40/500

CK

Halocarbon®

Pressure/Vacuum in presence

Direct or Flexible Line

–70/300

CF

of strong oxidizing agent

Syltherm®

Pressure

Direct or Flexible Line

–40/750

HA

ORDERING CODE

Example:

01

310

S

S

01T

XCK

NH

Process Connection Size

01 - 1⁄8 NPT Male, (available with 310 only)

01

02 - ¼ NPT Male, (available with 310 only)

04 - 1/2 NPT Male, (available with 310 only)

06 - 3/4 NPT Male, (available with 310 only)

08 - 1 NPT Male, (available with 310 only)

25 - ¼ NPT Female

50 - 1/2 NPT Female

Seal Type

310 - All-welded Mini seal no flushing port

310

315 - All-welded Mini seal with flushing port connection

Diaphragm Material

S - 316L SS

S

H - Hastelloy® C-276

U - Tantalum

P - Monel® (Must be ordered with Monel® bottom housing)

Bottom Housing Material

S - 316L SS

S

H - Hastelloy® C-276

M - Monel®

G - Hastelloy® B-2

Instrument Connection Size

01T - 1⁄8 NPT Female

01T

02T - ¼ NPT Female

Options (if choosing an option(s) must include an “X”)

X_

_

Filling Fluid

CG - Glycerin

CK - Silicon 50cST

CK

CF - Halocarbon®

See Filling Fluid Table Below

Optional Features

PU - Pipe Plug for flushing connection (Must match bottom housing material; 315 seal only)

NH - SS instrument tag

NH

NN - Paper instrument tag

DU - Instrument welded to seal

MQ - Positive material identification

W1 - Dye penetrant testing

6B - Cleaned for oxygen service

When selecting an instrument, refer to the Min/Max Guide for compatibility with this diaphragm seal or scan the QR code to the right.