Diaphragm Valves

SL-D74-MHJ-VSM4
SL-D74-PHJ-TW4
Title:
Diaphragm Valves
DV74 Series

Features

• Suitable for high purity applications

• 316L stainless steel enhances weldability and resistance to corrosion 

• Both manual and pneumatic actuation are available

• Face seal fittings (FSR) or butt welded connections

• Internal spring-less design

• Metal-to-metal seal minimizes particle generation and ensures purity integrity in the flow passages

• Handle includes a status window to indicate open / closed position

• Long service life

• 100% Helium leak tested

• Multiple flow paths available

• Electropolished

 

Spec Sheet

SL -

DV74

M 

H

B -

FNT4 -NO

Body Material

Model

Actuation

Working Pressure

Flow Path 

Inlet / Outlet*Options

SL: 316L

DV74

M: Manual

P: Pneumatic actuator (Normally closed)

H: 3500 psi

L: 300 psi

Blank: In-line Type

Elbow Type

P: East in / North out

Q: East in / South out

Three-way valve

B: Right inlet, left / top outlet

C: Right inlet, left / bottom outlet

D: Right / top inlet, left outlet

E: Right inlet, top / bottom outlet

F: Top / bottom inlet, left outlet

H: Left / right inlet, top outlet

Four-way valve

I: Two inlet / two outlet

J: One inlet / three outlet

K: Two inlet / two outlet (elbow)

L: Three inlet / one outlet

Rear-entry valve

A: Rear inlet / one outlet

T: Rear inlet / two outlet

R: Rear inlet / four outlet

TW4

TW6

VSM4

VSF4

TF4

Blank: Standard

NO: Normally open (Pneumatic, Low Pressure)

* For standard models, if the high pressure (inlet) connections and low pressure (outlet) connections are same, list only one. If different, the prior represents inlet connection, and the latter represents outlet connection.

• Maximum operating pressure: 300 psi (20 bar), 3500 psi (240 bar)

• Minimum operating pressure: Vacuum

• Proof pressure: 150% of maximum operating pressure

• Burst pressure: 400% of maximum operating pressure

• Temperature range: 40˚F~150˚F (-40˚C~ 65˚C)

• Inboard leakage: 1 x 10-9 atm cc/sec He

• Leakage across seat: 4 x 10-9 atm cc/sec He

•  Cv: 0.3

 

• Body: 316L

• Seat: PCTFE*, Vespel®**

• Diaphragm: Elgiloy®

 

• Operating pressure: 70-125 psi

• Inlet connection: 1/8" NPT(F)

• Working Status: Normally closed

 

• 1.6 cc