Pazzini 900 Series

Application:

The single-seat divert valve is a hygienic pneumatically operated valve used for flow diversion in the food, beverage, and pharmaceutical processing industry.

Features:

• Made in SS316L / wetted surfaces
• Few moving parts, contributing to high reliability and low maintenance.
• Easy cleaning
• Seat gasket replacement in less than 7 minutes without removing the valve from the line and no tools required.
• Repairable actuator

Spare parts

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)

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

Working Principle:

Seat valves are operated by a single-acting, double-acting pneumatic actuator or manual handle. The compressed air is applied to the actuator and the shaft is moved to place the valve in the "open" or "closed" position.
Single seat divert valves have one seal for each switching position separating the particular pipelines from one another. The single-seat divert valves are not recommended for separating incompatible fluids.

Recommended Inlet:

Easy Conversion / Integration:

The 180º rotation of the pneumatic cylinder of the single-acting actuators allows having a normally open or normally closed valve.

Our design allows for easy integration from a simple and economical solution using an inductive proximity sensor to a control head that includes the electro-valve and the sensors, both used to control and supervise the pneumatic valve.

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.

 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

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:

DIMENSIONS

PRESSURE DATA:

When the pressure at the inlet port "product pressure" builds enough to overcome spring pressure a leakage at the valve seat can occur. See below the table for product pressure recommended.

Shipping:

NOTE: Customer is responsible for: Removing the shipment from the truck (when applied), bringing it into your location, and noting damaged or missing items on the carrier's delivery receipt.

• Orders for “in-stock” items will normally ship the same day or next day 

For International buyers: Please contact us, includes Alaska, Hawaii, and Puerto Rico. Customer is responsible for clearing customs and all associated fees. We won't under-value merchandise.

• All orders are shipped prepaid.

• The address must be in a commercial area and someone must be at the site to receive deliveries during normal business hours.

• We will apply shipping company’s fees for any problem with delivery caused by the customer error.

• Many carriers cannot deliver to P.O. Boxes but we can offer shipments via the United States Postal Service.

• Rural businesses are sometimes considered residential

• Any delivery time stated by the Company shall be treated as an estimate only. While every effort will be made to dispatch goods on time, no liability can be accepted by the Company for failure to deliver within the advertised times. The Company shall not be liable for any loss or damage whatsoever (including consequential loss of profit or revenue) arising directly or indirectly from any delay on the delivery of all or any of the goods and services, howsoever caused.

Returns:

• Inspect merchandise upon delivery and report any damage or shortage within two business days. Mixer, Positive Displacement  Seals, and spares are considered custom, so they cant be returned.  
• Returns must be authorized by Texas Process Technologies. You must contact us to obtain an RMA “Return Material Authorization Number” before returning an item within 14 days from receipt of goods.
• Final sales apply to some of our items due to their nature, which means that they can not be returned or refunded unless the item is defective in which the warranty agreement applies. These items may include but are not limited to: electric motors, VFDs, any elastomeric products (such as gaskets, seals and o-rings), special order items and modified items.
• Custom orders cannot be returned. This includes: made-to-measure items, modified items, special request items as well as pumps that have been adapted to your needs (for example, positive displacement pumps assembly that include the pump, gear box, the motor and other components are specifically designed for each customer which will not work in other applications, therefore, making the assembly non-returnable) as well as custom cuts on tubing or spools. 
• No returns accepted for tubing.
• Returns caused by customer ordering errors will be charged round trip freight, and a 20% restocking fee, all returns are freight pre-paid by the customer. Returns must be received in unused resalable condition (new and in original package)
• If any Product fails because of a Warrantable Defect during the Limited Warranty Period, Texas Process Technologies will, in its sole discretion, either (1) repair the Product or (2) replace the Product. Please read our product Warranty.
• Returned items that are not defective may be charged a restocking fee of 20%.
• Prior to choosing “check out”, you must be sure this product meets your expectations. If you are not sure, please contact us before ordering.
• Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund. If you are approved, then your refund will be processed, and a credit will be applied to your credit card or original method of payment, within a certain amount of days.
• If the product is deemed not able to be restocked, the customer will be responsible for providing a shipping account number to have product returned to them, or product will be discarded, and no credit will be is.