N/A PTFE Seats and Seals
All standard PTFE seats and seals are manufactured using unfilled, unpigmented PTFE. Virgin PTFE provides excellent resistance to the most aggressive chemicals and can handle media at both elevated and semi cryogenic temperatures. Having no filler material, PTFE components are commonly specified for applications where attack of an added filler could occur. Typical applications would be fluorine based chemicals which would attack glass or highly oxidizing media which would deteriorate graphite. Virgin PTFE is commonly used in Cam-Tite Ball Valves specified for hydrofluoric acid and fluorine gas service. Cam-Tite Ball Valves utilizing virgin PTFE seats and seals have a temperature range of -50°F to 450°F (-45°C to 232°C).

Reinforced PTFE Seats and Seals
For applications that require higher temperature resistance and improved hardness, the Cam-Tite can be supplied with reinforced PTFE (RTFE) seats and stem seals. These components are glass reinforced and offer a temperature range of -60°F to 520°F (-51°C to 271°C), dependent upon process pressure conditions.

Firesafe Seats and Seals
For applications involving flammable fluids, the Cam-Tite Ball Valve is available with seat and seals designated Firesafe. Most commonly supplied as reinforced PTFE, Firesafe seats incorporate secondary metal-to-metal seat rings and a special back seal for normal seat operation. Stem seals combine the fire resistance of graphite with a reinforced PTFE bearing. Cam-Tite Ball Valves equipped with these components meet the requirements of API 607 (3rd or 4th edition depending on valve configuration).

UHMWP Seat and Seal Components
Ultrahigh molecular weight (high density) polyethylene offers abrasion resistance and wear resistance far superior to that of PTFE. Seats and seals of UHMWP provide exceptional service in high cycle applications. The material has a practical temperature limit of 200 °F (93°C).

PEEK Seat and Seal Components
PEEK is a tough high temperature engineered thermoplastic offering broad chemical resistance, excellent recovery from deformation, a high degree of dimensional stability, and exceptional resistance to hydrolysis. PEEK has outstanding abrasion resistance and is not sensitive to dynamic fatigue.

G2000 PEEK
Chemical
Since G2000 PEEK is a virgin crystalline polymer, its resistance to chemical attack is excellent. G2000 PEEK is recommended for most environments other than strong oxidizers. It is compatible with numerous acids, bases, and aliphatic and aromatic hydrocarbons.

Steam
Unlike most thermoplastics, G2000 PEEK will not hydrolize and is recommended for use in steam service and other high-temperature aqueous processes.

Nuclear
G2000 PEEK offers excellent resistance to embrittlement when exposed to gamma radiation. This resistance is maintained in both acid and alkali media.

G3000 PEEK
G3000 PEEK combines the basic properties of the G2000 PEEK with that of carbon graphite and PTFE fillers, yielding a seating material with greater stability at higher temperatures and significantly reduced seating torque. Due to its filled content, G3000 PEEK is an excellent choice for high temperature applications, having a maximum temperature capability of 550°F (288°C).

Comparison of Typical Physical Properties

N/A The Cam-Tite ceramic ball is an advanced engineering oxide ceramic, magnesia-partially stabilized zirconia (Mg-PSZ) which has extremely high strength and fracture toughness.

Features:

• Corrosion resistant
• Impervious to gases
• Impact resistant
• Withstands high temperature
• High thermal shock resistance
• Impervious to build-up on the ball
• Excellent choice where ferric chloride build-up is a problem

N/A The patented “Caged Bonnet” was specifically designed to meet the needs of those hazardous applications where a quick and easy turnaround during scheduled maintenance is required. The uniquely designed caged bonnet assembly allows the repair and replacement of all internal components simply by removing the bonnet bolts and lifting off the bonnet assembly. The caged device is available on all bonnet configurations (standard, extended, severe service and bellows) in both nuclear and commercial configurations. The device utilizes a captured (caged) metal saddle that holds the ball, seat rings, seats, grounding springs and cover gasket (nuclear model only) in place. This device allows the removal and replacement of all components utilizing one subassembly.

N/A Extended Bonnet
Cam-Tite Ball Valves can be furnished with extended bonnets for higher temperature or semi-cryogenic services. The extended bonnet allows the valve to be wrapped with insulation without interference from the hand lever and is interchangeable with the standard bonnet. This arrangement raises the stem seal further away from the flowing fluid, thereby reducing the effects of the temperature extremes. The stem is supported to minimize the possibility of galling or stem leakage. The extended bonnet permits the packing nut to extend beyond the valve insulation, thereby permitting stem seal adjustment without disturbing the insulation.

Severe Service Bonnet
The severe service bonnet option was specifically designed to meet the needs of those difficult applications where a true stuffing box is preferred. This design utilizes the extended bonnet as the primary component maintaining the conventional bottom stem seal, augmented by stacked Chevron V-ring packing at the top. The addition of an optional lantern ring and bonnet tap provides for the insertion of compatible lubricants into the packing, inert gas padding, or leak detection. Available in ANSI Class 150 through 600, the severe service bonnet option brings a modular approach to the stem sealing system of the Cam-Tite Ball Valve.

Bellows Stem Seal
Cam-Tite Ball Valves are also available with a bellows stem seal. This stem seal device, manufactured by Kerotest Manufacturing Corp., provides a hermetic stem seal via a unique quarter-turn bellows design.
The interface design for the bellows stem seal to the Cam-Tite Ball Valve was a joint effort between Engineered Valves and Kerotest in which the bellows assembly becomes integral to the bonnet of the valve. This allows for disassembly should replacement of internal components be required. The device can also be easily actuated. Bellows stem seals are available in ANSI Class 150 and 300 in a variety of materials.

N/A Anhydrous HF Acid Service
Numerous years of field application experience has lead to a recommended construction for Cam-Tite Ball Valves in anhydrous hydrofluoric acid. With a variety of body materials to choose from, valves prepared for HF service normally incorporate inconel 600 bonnet bolting, inconel 718 belleville washers, a stainless steel rotational stop (in applicable sizes), and virgin PTFE seats and seals. Additionally, all HF valves are specially assembled, cleaned, and tested. Specify "Prepared for HF Service" using code "HF" in the valve configuration number.

Oxygen Service
Cam-Tite Ball Valves can be prepared for oxygen service. These valves are subjected to rigid procedures to insure that they are free from all burrs, chips, and dirt. They are specially assembled, cleaned, tested and packaged. Valves prepared for oxygen are lubricated with DuPont Krytox® GPL 206 unless otherwise specified. Order valves "Prepared for Oxygen Service" using "OX" in the configuration number.

Vacuum Service
The Standard Cam-Tite Ball Valve is suitable for vacuum services down to 20 microns absolute. For vacuum conditions below 20 microns absolute high vacuum valves can be supplied. High vacuum service valves are manufactured with special attention to seat and seal tolerances and finishes and are specially cleaned and packaged. These valves have leakage rates less than 1 x 10-7 STD. CC/Sec as verified by a mass spectrometer test. Specify valves "Prepared for High Vacuum Service" using code "VAC" in the configuration number.