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Pump Solutions Group Neptune Relief Valves User Manual

Relief valves, Features, Bulletin rv-08

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Relief Valves

BULLETIN RV-08

Relief Valves

Features

• All wetted parts are 316SS or Carpenter 20

• Pressures from 30 to 2000 psi

• Spring guide for consistent relief capacity

• Easily adjustable relief setting

• Liquid service only

Neptune Relief Valves have two outstanding characteristics:
• economy

• simplicity

Economy. Models RV-316-1, -2, -3 and -4 with all 316SS wetted
parts cost no more than other 304SS designs. Carpenter 20 valves
are also available as standard.

Simplicity. Neptune’s exclusive design uses a self-cleaning ball check
and seat. It has a unique spring guide which assures proper spring
loading and consistent relief capacity. The relief pressure setting can
be easily changed by removing the top cap screw and locking set
screw, inserting a proper Allen wrench into the opening, and
adjusting the spring to the desired pressure.

Recommended setting: Operating
pressure plus 10% or 50 psi
whichever is greater.

CAP SCREW

CAP NUT

CAP NUT GASKET

LOCK SETSCREW

ADJUSTING

SETSCREW

SPRING GUIDE

SPRING

VALVE BODY

SPRING SEAT

BALL CHECK

BALL SEAT

© 2008 Neptune Chemical Pump Company

All Rights Reserved

Bulletin RV-08

P/N ZL105624

Printed in U.S.A.

SOLD BY:

Quotation and Ordering Information

Please supply the following information:
1. Type of liquid to be handled.
2. Relief pressure range or set point required.

MATERIAL OF

MODEL

PRESSURE

CONSTRUCTION

NUMBER

RANGE (PSI)

RV-316-1

30 to 100

Type 316

RV-316-2

101 to 400

Stainless Steel

RV-316-3

401 to 1000

RV-316-4

1001 to 2000

Carpenter 20

RV-C20-1

30 to 100

RV-C20-2

101 to 400

SPECIFICATIONS

Inlet/Outlet pipe size:

1

2

" NPT

MODEL

PRESSURE

CAPACITY

NUMBER

(PSI)

(GPM)

RV-316-1

100

3.0

RV-C20-1

RV-316-2

400

4.0

RV-C20-2

RV-316-3

1000

4.0

RV-316-4

2000

6.0

1

2

" FNPT

1

2

" MNPT

4

3

16

"

1

13

16

"

1

1

8

"

P.O. Box 247 • Lansdale, PA 19446-0247
Tel: 215-699-8700 • Fax: 215-699-0370
Toll-Free Tel: 1-888-3NEPTUNE (1-888-363-7886)
Toll-Free Fax: 1-800-255-4017
Web Site: http://www.neptune1.com
E-mail: [email protected]