3-Piece Ball Valve
3-Piece Ball Valve
Three-piece ball valves and gate valves are the same type of valve, the difference is that its closing member is a sphere, the sphere rotates around the center line of the valve body to achieve the opening and closing of a valve. Three-piece ball valve in the pipeline is mainly used to do cut off, distribution and change the direction of flow of media.
Technical Specifications
Materials:
Body:
Forged Carbon Steel: ASTM A105 | ASTM A350 Gr. LF2 | A182 F5,F9, F11, F22, F91;
Forged Stainless Steel: ASTM A182 Gr F316, F316L, F316Ti, F304, F347H, F317L, F321/321H, F310S, F44(254SMO)
Duplex: A182 F51, F53, F55
Nickel Alloy: Monel 400 | Inconel 600, 625 | Hastelloy C27, C22, B2 | Incoloy 800/800HT, 825 etc.
Ball:
ASTM A105 w/ENP | ASTM A350 Gr. LF2 w/ENP | ASTM A182 Gr. F316 | ASTM A182 Gr. F316 w/ENP
Stainless Steel | Duplex SS | Nickel Alloy etc.
Seat:
RPTFE | Nylon | Davilon | PEEK | Tek-Fil® | TFM
Stem:
ASTM A479 Type 410 | 17-4PH | XM-19 | ASTM A182 F316 | Stainless Steel | Duplex SS | Nickel Alloy etc.
Standards:
Design Standard:
ASME B16.34 Class 600
Testing Standard:
API 598, MSS SP72
End Connections:
Threaded ASME B1.20.1 NPT | Socket Weld ASME B16.11 | Extended Socket Weld
Butt Weld ASME B16.25 | Extended Butt Weld | Flange Class 600 | ASME B16.10 | ASME B16.5
Maximum Permissible Working Pressure
2200 psi CWP | 151 Bar
Steam Rating
Up to 425 WSP
Body Style
Three Piece
Temperature Range
-50°F to 550°F | -46°C to 287°C
Certifications
API 607 4th Edition | ATEX | CRN | NACE MR0175
PED | PE(S)R | TR CU | SIL
Face to Face
ASME B16.10 | Manufacturer Standard
Ports
Full Port NPS ¼ to 4 / DN 8 to 100
Standard port NPS ¾ to 2½” / DN 20 to 65
Applications
Process | Steam | Fire Safe | Industrial Gases
Size Range:
NPS ¼ to 4 / DN 8 to 100
Applications
Process | Steam | Fire Safe | Industrial Gases
Features And Benefits
Triad series three-piece ball valves feature a live-loaded stem seal and redundant body seal design. These rugged, high-pressure, three-piece ball valves are available in full-port and standard-port models and are ideal for process, severe service, high-temperature, and high-cycle applications.
Clever Stem Assembly
Flow-Tek manufactures heavy-duty, high-quality valve stems that are connected to the ball and operator by a double “D” form. All Flow-Tek stems are protected against internal entry and blowout for maximum safety, and the Triad series of 2 1/2” O.D. valves feature a rugged, large-diameter stem with a dynamically loaded, self-adjusting primary and secondary seal. By utilizing a Belleville gasket, the stem packing is self-adjusting to compensate for temperature variations and normal wear. The stem assembly is secured by a saddle lock washer, which prevents the stem nut from loosening in high cycle automation applications.
Stem Packing
The primary seal consists of a 50% stainless steel and 50% PTFE thrust washer and a PEEK thrust washer protector. Adjustable stem packing and an additional PEEK packing protector create multiple secondary seals between the stem and the valve body. The stem packing consists of graphite, which provides fire safety protection and an extremely high life cycle. This dual stem packing design is exclusive to Flow-Tek.
Antistatic Protection
The Triad series of antistatic protected valves have an antistatic grounding device as standard. These devices ensure electrical continuity between the ball, stem and body of the valve, thus preventing static charges from sparking inside the valve.
Stem Design For 3“ and 4” Valves
The stem is guided by the body and gland to ensure smooth operation even under high torque conditions. The packing gland is adjustable and all stems are polished to minimize torque. Optional Belleville washers can be added for self-adjusting dynamic loads.
Double Body Stem Packing
Flow-Tek’s Triad series valves feature a dual body sealing system for additional external leakage protection. The internal primary seal is TFM material. The secondary seal is graphite. The use of TFM as the internal seal minimizes color contamination of the process media. Both body stem packings are securely retained in machined grooves in the valve body. These grooves minimize seal movement and cold flow. As a result, compression stabilization is maintained even under extreme conditions.
Secure Installation
The Triad series has a unique standard feature of a one-piece cast upper flange that ensures mandatory actuator mounting. This actuator mounting spacer avoids unnecessary movement of the actuator in high cycling or continuous load applications. The actuator unit can be easily and safely removed when the valve is at full pressure. The actuator mounting spacer conforms to the ISO 5211 bolting pattern standard. In addition, the mounting spacer facilitates field assembly of Flow-Tek’s media leakage prevention device. This device, combined with dual body stem packing, makes it an ideal valve for non-vented severe service, high and semi-low temperatures, and high cycle applications.
Seat Selection
A wide selection of seat materials is available to meet the needs of most applications. Seats come standard in TFM 1600 material, which, in addition to the excellent chemical resistance of PTFE, provides reduced porosity and permeability, increased temperature range, and reduced valve torque. Material options include RPTFE, stainless steel/PTFE (50/50), UHMWPE, PTFE in primary form, PEEK, Tek-Fil® (carbon/graphite filled TFM), all-metal seats and cavity packing. PEEK seats have the ability to withstand high pressures/temperatures.
Your quest for reliable and efficient ball valves ends here with Reliable Ball Valve Suppliers. We are a team of dedicated ball valve manufacturers who take pride in our ability to deliver top-notch products. Our custom ball valves service ensures that every valve is made to your exact specifications, offering a perfect fit for your unique requirements.
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