Tri-Clamp Sanitary Pressure Relief Valve

  • $670.00


Pazzini 900 Series

Tri-Clamp® Pressure Relief Valve (CIP Pneumatic Override)

Pressure Relief valve is a hygienic manually adjustable valve used in the food, beverage and processing industry applications where over-pressure must be discharged in order to avoid damage to plant and/or personnel

Features:

• Pneumatic operated in order to open during the clean-in-place (CIP).
• Made in SS316L / wetted surfaces
• Manually adjustable from 10 to 150 psi
• The specific pressure is set by adjusting the spring pressure nut.
• Seat gasket replacement in less than 10 minutes without removing the valve from the line and no tools required.

Materials:

 • Product wetted steel parts: AISI 316L (internal Ra < 0.8 μm)
 • Other parts in stainless Steel: AISI 304
 • Plug gasket: EPDM
 • Other product wetted seals EPDM (standard)

Spare parts

Technical specifications:
 • Max working pressure: 145 psi (10 bar)
 • Min. working pressure: Full vacuum
 • Working temperature: Please see below information.


Watch Video

 H1= CIP PNEUMATIC OVERRIDE

 H2= CIP MANUAL OVERRIDE

SIZE

 

H1

H2

B

C

 

INCH

MM

INCH

MM

INCH

MM

INCH

MM

1 1/2"

10.5

266.0

12.2

309.0

2.8

72.0

2.8

72.0

2"

11.8

300.0

13.8

350.0

3.2

82.0

3.2

82.0

3"

14.6

370.0

20.0

507.0

4.4

112.0

4.4

112.0

 

Flow Capacity:

The flow coefficient Cv is the volume (in US gallons) of water at 60 °F that will flow per minute through a valve with a pressure drop of 1 psi across the valve. 

 

VALVE SIZE (at 100% open)
CV
1 1/2" 35
2" 70
3" 150

 

 

For other pressure drops than 1 psi the flow can be calculated with the following formula:

Q= Cv x √ ∆p

Where:

Q= Flow in GPM
Cv = Flow coefficient.
∆p = Pressure drop in psi over the valve.

Example:

 1 1/2" valve has a Cv= 35 GPM with a pressure drop of 1 psi.

For a pressure drop of 2 psi which is the flow?

Q= 35 X √2 = 49 GPM.

Fluids other than water, please consult us.

Static seal temperatures

Gasket Properties EPDM VITON
Heat resistant Excellent (275°F) Excellent (400°F)
Cold resistant Good-Excellent (-20°F) Good-Excellent (-30°F)
Steam Good Excellent
Abrasion-resistant Good-Excellent  Good
Alkali Good Poor-Good
Acid resistance Good-Excellent  Good
Vegetable oil Good Excellent
Petroleum oil Poor Excellent
Oxonia Good-Excellent  Excellent
Ozone Good-Excellent 

Excellent

 

Note: The surfaces in contact with a seal determine what type to use. The surface can either be static or dynamic, in motion or without movement. Static seals are usually used when there is no relative motion between mating surfaces. Dynamic seals are the opposite. They are used when there is motion between surfaces or compression loads.  Seal under compression load in combination with high temperatures also affect the properties of elastomers.


Examples: Seat vales (Relief, Shutt-down, Divert and Regulating)

Seat Valves recommended temperatures:

Recommended temperature for short periods of time (15-20 min) EPDM:  260°F, VITON: 285°F
Recommended temperature for short periods of time (15-20 min) EPDM:  260°F, VITON: 285°F