ITT INDUSTRIES AP0506 Pure Flo Ptfe Diaphragm Valve 1/2 S/n 735653-003-001

( Brand: Itt Industries ), ( Manufacturer Part Number: AP0506 ), ( Part Type: Valve ), ( Country Of Origin: United States )

Review ITT INDUSTRIES Pure flo 1/2 Inch Ptfe Diaphragm Valve S/n

The **ITT Appliance Products AP0506 Pure-Flo " PTFE Diaphragm Valve (Serial Number: 735653-003-001)** is a high-performance, chemically resistant flow control solution engineered for demanding industrial, laboratory, and process applications where precision and reliability are paramount. Designed with a **1/2-inch (15 mm) nominal size**, this diaphragm valve features a **pure PTFE (polytetrafluoroethylene) diaphragm**, a material renowned for its exceptional resistance to corrosion, extreme temperatures, and a wide range of aggressive chemicals, including acids, bases, solvents, and organic compounds. The PTFE diaphragm ensures a tight seal, eliminating the risk of leakage or contamination, while its self-cleaning properties prevent buildup and maintain consistent flow performance over prolonged use. The valve s **all-PTFE wetted parts** including the diaphragm, seat, and internal components eliminate the need for lubricants or sealants, reducing maintenance requirements and minimizing the risk of cross-contamination in sensitive applications such as pharmaceutical manufacturing, semiconductor processing, or food and beverage production.

Constructed with a **durable brass or stainless steel body**, the AP0506 is built to withstand high pressures and temperatures, typically rated for operation between **-20 F to 250 F (-29 C to 121 C)** and pressures up to **150 PSI (10 bar)**, depending on the specific media and configuration. Its **manual lever or pneumatic actuator** (if equipped) provides smooth, precise control over fluid flow, allowing for easy throttling or full-on/full-off operation with minimal effort. The valve s **quick-connect or threaded (NPT) fittings** ensure secure, leak-proof connections, while its compact and lightweight design makes it ideal for integration into tight spaces or existing piping systems without compromising functionality. Whether used in **liquid handling, gas regulation, or chemical transfer systems**, this valve delivers consistent, reliable performance with minimal wear, making it a trusted choice for engineers and operators seeking a robust, low-maintenance solution.

Beyond its technical specifications, the **ITT Appliance Products AP0506** stands out for its **versatility and ease of installation**. The valve s **universal compatibility** with a variety of fluids including water, acids, alkalis, hydrocarbons, and even some abrasive slurries makes it suitable for a broad spectrum of industries, from **laboratory settings and pilot plants to large-scale manufacturing environments**. Its **self-priming capability** and resistance to cavitation further enhance its durability, ensuring long-term reliability even under fluctuating operating conditions. Additionally, the valve s **modular design** allows for easy replacement of the PTFE diaphragm and seat, extending the lifespan of the unit and reducing downtime. With its **serial number (735653-003-001)** serving as a unique identifier for traceability and warranty purposes, this valve represents a premium investment in flow control technology combining **chemical resistance, mechanical robustness, and operational efficiency** to meet the most exacting industrial standards.

### **Pros and Cons of buying a ITT AP0506 Pure-Flo 1/2 PTFE Diaphragm Valve (S/N 735653-003-001)**

1. **High-Purity Construction** The valve is made with **PTFE (polytetrafluoroethylene)**, a chemically inert material that resists corrosion, contamination, and degradation from aggressive chemicals, making it ideal for pharmaceutical, biotech, and semiconductor applications.

2. **Self-Cleaning Design** The diaphragm valve s design minimizes dead legs and internal surfaces, reducing the risk of product buildup and cross-contamination, which is critical in cleanroom environments.

3. **Versatile Media Compatibility** Suitable for a wide range of fluids, including **acids, bases, solvents, and sterile liquids**, due to the PTFE diaphragm and body.

4. **Low Shear Operation** The diaphragm valve operates without internal moving parts (like seats or plugs) that could shear or degrade sensitive products, making it safer for delicate substances like biologics or emulsions.

5. **Easy Maintenance & Cleaning** The diaphragm can be **removed and replaced** without disassembling the valve body, simplifying cleaning and reducing downtime. The valve can also be **CIP (Clean-In-Place) and SIP (Sterilize-In-Place) compatible** depending on the application.

6. **Leak-Tight Shutoff** When fully closed, the PTFE diaphragm provides a reliable seal, preventing leaks and ensuring process integrity.

7. **Moderate Pressure & Temperature Range** Handles pressures up to **150 PSI (10 bar)** and temperatures from **-40 F to 250 F (-40 C to 121 C)**, suitable for many industrial and lab applications.

8. **Standardized Sizing** The **1/2" size** is common in lab and small-scale process systems, making it easy to integrate into existing setups.

9. **Brand Reliability** ITT (now part of **Flowserve**) is a well-established manufacturer in fluid control, known for durable and performance-driven valves.

10. **Compatibility with Sanitary & Hygienic Standards** Often used in **3-A Sanitary Standards** and **EHEDG (European Hygienic Engineering & Design Group)** compliant systems, ensuring compliance with strict hygiene regulations.

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1. **Limited Pressure & Temperature Range** While functional for many applications, the **150 PSI max pressure** and **250 F max temperature** may be insufficient for high-pressure or high-temperature processes (e.g., steam sterilization at 275 F ).

2. **Potential PTFE Wear Over Time** PTFE is durable but can **degrade or become brittle** with prolonged exposure to **UV light, high temperatures, or certain chemicals** (e.g., strong oxidizers like chlorine gas). This may require more frequent diaphragm replacements.

3. **Higher Cost Than Metal Valves** PTFE valves are generally **more expensive** than stainless steel or PVC alternatives due to material and manufacturing costs.

4. **Not Suitable for Abrasive Media** The PTFE diaphragm can be **scratched or damaged** by abrasive particles, which may reduce lifespan if the fluid contains solids.

5. **Limited Flow Coefficient (Cv)** Compared to globe or ball valves, diaphragm valves may have **lower flow rates**, which could be a limitation in high-throughput systems.

6. **Potential for Diaphragm Leakage Over Time** With repeated cycling, the PTFE diaphragm may develop **micro-cracks or wear**, leading to slight leaks if not maintained properly.

7. **Specialized Installation Requirements** Some PTFE valves require **proper grounding or bonding** in conductive systems to prevent static buildup, which may add complexity to installation.

8. **Supplier & Stock Availability** As a **discontinued or older model (S/N 735653-003-001)**, finding **OEM replacement parts** (e.g., diaphragms, seals) may be challenging. Third-party suppliers may offer alternatives, but compatibility is not guaranteed.

9. **Not Ideal for High-Viscosity Fluids** While it handles many liquids well, **extremely viscous fluids** (e.g., thick pastes or slurries) may require additional consideration for proper operation.

10. **Potential for Contamination Risk in Non-Sterile Applications** If not properly cleaned or if PTFE flakes off, it could introduce **micro-particulates** into sensitive processes.

---

The **ITT AP0506 Pure-Flo 1/2 PTFE Diaphragm Valve (S/N 735653-003-001)** is a **high-quality, chemically resistant valve** well-suited for **pharmaceutical, biotech, lab, and cleanroom applications** where **contamination control, ease of cleaning, and low-shear operation** are critical. Its **PTFE construction** ensures compatibility with a wide range of corrosive and sterile fluids, while its **self-cleaning design** reduces maintenance burdens.

However, its **limited pressure/temperature range, higher cost, and potential long-term PTFE degradation** make it less ideal for **high-pressure, high-temperature, or abrasive media applications**. Additionally, **discontinued status** may complicate future part replacements.

- You need a **corrosion-resistant, low-shear, easy-to-clean valve** for **pharmaceutical, biotech, or lab use**.

- Your system operates within the **150 PSI / 250 F limits** and handles **non-abrasive, non-oxidizing fluids**.

- You can **source replacement diaphragms** (check with ITT/Flowserve or authorized distributors).

- Budget is not a major constraint (PTFE valves are premium-priced).

- You require **higher pressure/temperature ratings** (e.g., **316L stainless steel diaphragm valves** or **sanitary ball valves**).

- Your application involves **abrasive or highly viscous fluids** (may need **PFA-coated or reinforced diaphragms**).

- You need **long-term availability** look for **newer ITT models or equivalent brands** (e.g., **Swagelok, Hoke, or Valcor**).

- Cost is a major factor **PVC or polypropylene diaphragm valves** may be more budget-friendly for less demanding applications.

1. **Verify compatibility** with your specific fluid and process conditions.

2. **Check for genuine replacement parts** (contact ITT/Flowserve or a trusted distributor).

3. **Compare with newer ITT models** (e.g., **AP0506 Series updates**) or alternative brands.

4. **Confirm installation requirements** (e.g., grounding, bonding, or special mounting).

5. **Assess long-term maintenance needs** PTFE valves require periodic diaphragm checks.

**Final Verdict:** This valve is a **strong choice for its intended applications** but may not be the best long-term solution if maintenance or scalability is a concern. If you can confirm part availability and process fit, it remains a **reliable, high-performance option**. Otherwise, exploring **modern alternatives** may be wiser.

Details:

Material: PTFE whetted components. Only items shown in the listing photos are included. All equipment is sold as with no warranty of merchant ability or fitness for a particular purpose. Laboratory and clean room systems.

Application: Sanitary / Biotech Pharmaceutical. Type: Diaphragm Valve. Threads and fittings appear intact. Its officers, employees, and agents from all claims, damages, or expenses including legal fees arising out of the purchase, ownership, use equipment.

Take clear photos of. No functional testing has been performed. Chemical handling. The damaged item.

Equipment should only be installed and operated by qualified personnel. Please review all photos carefully for condition and details. Valve as shown. Designed for clean / sanitary environments.

The BOL damage notation. Brokerage fees. High-purity fluid control. Condition: Valve is previously used and in good overall condition with light patina from prior service see photos.

Retain all original packaging until the claim is resolved. Details:: Manufacturer: ITT Pure-Flo. Item Specifics: Brand: ITT Pure-Flo. PTFE diaphragm for chemical resistance.

Full: ITT Pure-Flo 1/2 PTFE Diaphragm Valve model AP0506. Serial Number: 735653-003-001. Valve Size: 1/2 in. Valve Operation: Manual confirm if hand wheel present.

Durable industrial construction. Applications:: Biotech and pharmaceutical processing.

part #: ap0506 prices

• $189.99-$783.75

specifications valvesplumbing:

• brand: Itt Industries
• mpn: Ap0506
• part type: Valve
• country of origin: United States

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• Hydraulics, Pneumatics, Pumps Plumbing > Valves Manifolds > Other Valves Manifolds

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• started: April 22, 2026
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