Back,Pressure,Valves,Pressure Relief Valves

Back Pressure Valves & Pressure Relief Valves

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Back,Pressure,Valves,Pressure Relief Valves
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Products:

Back Pressure Valves & Pressure Relief Valves TOP VALVE

TOP VALVE Back Pressure Valves
& Pressure Relief Valves

Designed To Enhance the Accuracy & Safety
Of Your Metering Pumps


A new line of diaphragm style back pressure valves and pressure relief valves named TOP VALVE, has been introduced by Primary Fluid Systems Inc. New features include a completely adjustable pressure range of 15-150 PSIG* and a built-in air release to reduce priming difficulties with metering pumps.

TOP VALVE Back Pressure Valves and Pressure Relief Valves are available in seven sizes, 1/4" through 2" NPT and eight (8) materials of wetted construction. The seat design of this new line of valves greatly extends the normal life expectancy of the diaphragm.

  • Long life diaphragm

  • Range to 350 PSIG

  • Built-in air release and optional gauge port

  • 7 sizes (1/4" - 2" threaded, flanged or socket)

  • Color coded handles indicate size at a glance

  • High temperature valves available to (300°F/149°C)

  • High pressure all metallic valves available

  • Available in PVC, CPVC, PVDF, polypropylene, PTFE, stainless steel, Alloy 20 and Hastelloy C

TOP VALVE Brochure

The Standard TOP VALVE Series Incorporates

  • CPVC (Corzan) molded top on most models

  • available in 7 sizes 1/4” to 2” NPT or BSPT

  • 8 materials including PVC, CPVC, polypropylene, PVDF, PTFE, stainless steel, Alloy 20 & Hastelloy C

  • back pressure (anti-syphon) valve is a two port flow through design, factory set at 50 PSIG
    (field adjustable 15-150 PSIG)

  • pressure relief valve is a three port flow through design factory set at 50 PSIG (field adjustable 15-150 PSIG)

  • pressure relief valve is also available in a two port, off line style (model P2)

  • standard diaphragm is PTFE laminated and EPDM backed (3 year warranty); optional materials available

  • optional higher pressure rated (232 PSIG/16 BAR) PVC, CPVC (Corzan) and PVDF valves available

  • locking pressure adjustable handle standard

  • gauge port option

  • other optional materials available for CPVC molded top

Note: CRN available on a variety of valves. Please contact us for price and availability.

*Pressures under 15 PSIG require rubber elastomeric diaphragm.
N
ote: CRN is available on certain valves. Please contact factory for price and availability.

Flanged Valve TOP VALVE Series: (Plastic)

This series incorporates 150# socket-welded flanges on PVC and CPVC valves and threaded 150# companion flanges on polypropylene, PVDF and PTFE valves.

Flange sizes from 1/4” to 2” available.

 

 

Flanged TOP VALVE Series: (Metallic Valve Bodies)

This series incorporates 150# weld neck flanges on all
metallic valve bodies. Valve top material available in PVC,
CPVC (Corzan).

These flanged valves are also available in the High
Temperature and High Pressure Series.

Flanged TOP VALVE Series: (All Metallic)

This series incorporates either an aluminum or 316 stainless steel top on a metallic body constructed of 316L, Alloy 20, Hastelloy C or titanium.

These flanged valves are also available in the High Temperature and High Pressure Series.

 

 

High Pressure TOP VALVE Series (only available with metallic body)

  • pressure range 50 to 350 PSIG

  • this series incorporates a standard aluminum metallic top, viton diaphragm,
    high pressure spring with three standard choices of metallic wetted bottom

  • standard body materials available are 316L stainless steel, Alloy 20 or
    Hastelloy C; other metallic bodies available on request

  • standard metallic top is aluminum with optional 316L stainless material
    available

  • standard diaphragm material is Viton with optional materials available

  • valve is available in three styles: BH back pressure 2 port design;
    PH pressure relief 3 port in-line design; P2H pressure relief off-line design

  • valves available in various configurations that include threaded, socket and
    flanged

High Temperature TOP VALVE Series (for applications above 140°F/ 60°C)

  • temperature limit of this valve is dependent on body material selection to a maximum of 300°F (149°C)

  • this series incorporates a standard aluminum metallic top, viton diaphragm, high pressure spring with
    three standard choices of metallic wetted bottom

  • standard body materials available are 316L stainless steel, Alloy 20 or Hastelloy C, all rated to the
    maximum temperature; other metallic bodies available on request

  • optional body materials available are CPVC (Corzan) and PVDF; these have limited pressure versus
    temperature ratings and the factory should be consulted to ensure proper selection

  • standard diaphragm material is Viton with optional materials available

  • standard metallic top is aluminum with optonal 316L stainless steel available

  • valve is available in three styles: BH back pressure 2 port design; PH pressure relief 3 port in-line design;
    P2H pressure relief off-line design

  • valves available in various configurations that include threaded, socket and flanged

Back Pressure Valves & Pressure Relief Valves TOP VALVE
Dimensional Information

Overall Dimensions

Inlet / Outlet

Press. Relief

In/Out Port

Relief Port

Size

*A**

B

C

D**

E

F

NPT

NPT

1/4"

5.750

2.500

2.250

0.650

1.125

1.250

1/4"

1/4"

1/4" x 1/2" plastic

5.750

2.500

2.250

0.650

1.125

1.125

1/2"

1/2"

1/4" x 1/2" metal

5.750

2.500

2.250

0.650

1.125

1.125

1/2"

1/4"

1/2"

6.500

3.500

2.750

0.900

1.375

1.750

1/2"

1/2"

3/4"

6.500

3.500

2.750

0.900

1.375

1.750

3/4"

3/4"

1"

7.000

4.000

3.000

1.300

1.500

2.000

1"

1"

1 1/2"

7.750

4.125

3.250

1.687

1.625

2.063

1 1/2"

1"

2"

8.250

4.125

3.750

1.948

1.875

2.063

2"

1 1/2"


Dimensions are approximate for overall height based on valve factory set at 50 PSIG

** For pressure relief plastic body valves add 0.25" to dimensions
"A" and "D" except 1 1/2" size

Note:

Dimensions are the same for standard back pressure and pressure relief valves except as indicated above.






Back Pressure Valves & Pressure Relief Valves TOP VALVE

Flow Rates


Flow capacity through TOP VALVE Back Pressure Valves/anti-siphon and Pressure Relief Valves under continuous flow conditions @ 50 PSIG with ambient temperature water.

Size

1/4"

1/4" / 1/2"

1/2"

3/4"

1"

1 1/2"

2"

Flow Rate USGPM

4

4

6

8

14

25

40

Note:
Capacities will increase with pressure. If pressure is doubled, flow rate will approximately double. For capacities of valves with pulsating flow, use approximately 1/3 of the given flow rates.

Back Pressure Valves & Pressure Relief Valves TOP VALVE
Typical Installations


The installations below are typical installation examples only. Consult your engineering department for the appropriate installation of your application or call Primary Fluid Systems Inc. for advice.

(Click on picture to enlarge)


(Click on picture to enlarge)

Back,Pressure,Valves,Pressure Relief Valves
Back,Pressure,Valves,Pressure Relief Valves

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