A-T Controls Triac F8R Series Fire-Safe 3-Piece Manual & Automated Ball Valves
A-T Controls Triac F8R Series 3-Piece Ball Valves are the finest quality 3-piece valves on the market. The high quality investment castings feature a fully machined bore. The superior live-loaded packing system is accomplished with Belleville washers, “V” ring packing and a unique primary pyramidal stem seal – see drawing below. This advanced sealing system provides for protection against stem leaks experienced by ordinary ball valves.
![]() |
Fire-Safe 3-Piece Manual Ball Valve Features:
- Regular Port 1500/2000 psi WOG (by size)
- Stainless or Carbon Steel Body
- Threaded, Socket Weld or Butt Weld
- Sizes 1/4″ – 2-1/2″
- Belleville Washers, Double Chevron Packing, RTFE Seats Standard
50/50 Seats Optional for High Temps
Reinforced TFE seats are standard, but various options are available for seat materials. The 50/50 seat option is excellent for services that call for higher temperatures and more difficult applications including steam.
A-T Controls Triac F8R Series High Performance 3-Piece Automated Ball Valves
- Pneumatic Spring Return Actuator
- Double Acting Actuator
- Electric Actuator
Manual Ball Valve Part Number Matrix
| HOW TO ORDER MANUAL VALVES (ie. ATC-F – 88 C – TH – 0150 – XXX) |
||||||||
| 1 | – 2 | 3 | – 4 | – 5 | – 6 | 7 | 8 | 9 |
| ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ |
| ATC-F | – 88 | C | – TH | – 0150 | – X | X | X | |
1 Prefix |
4 End Connection |
|||
| ATC-F | Fire Safe Tested | TH | NPT Ends | |
| ATC-F | (on 31 Series) Graphite Packing & Seals | SW | Socket Weld Ends | |
| ATC-T | (on 31 Series) TFM Packing & Seals | BW | Butt Weld Ends | |
| ATC-NS | NSF 61 & 372 Certified Series | EW | Extended Butt Weld Ends | |
| F1 | 150# Flanged Ends | |||
2 Valve Series |
F3 | 300# Flanged Ends | ||
| 10 | 1pc. Regular Port 2000 WOG | F6 | 600# Flanged Ends | |
| 20 | 2pc. Full Port 1000 WOG | FR | 600# RTJ Flanged Ends | |
| 21 | 2pc. Regular Port 2000/1500 WOG | SA | Sanitary Clamp Ends | |
| 22 | 2pc. Direct Mount 1000 WOG, Full Port | SF | Sanitary Clamp Ends w/ Cavity Filler | |
| 23 | 2pc. 3600 WOG, Seal-Welded | DA | Tube O.D. Ends | |
| 24 | 2pc. 3000 WOG | DF | Tube O.D. Ends w/ Cavity Filler | |
| 26 | 2pc. 6000 WOG, Seal-Welded | DS | Sanitary Clamp x Tube O.D. Ends | |
| 30 | 3-Way Flanged, Full Port | TE | NPT x Extended Butt Weld | |
| 31 | 3-Way Flanged, Direct Mount, Full Port | TS | NPT x Socket Weld | |
| 33 | 3, 4, 5-Way Full Port, Multiport | MF | Male NPT x Female NPT | |
| 38 | 3-Way NPT, Regular Port | Tube Socket Weld | ||
| 55 | 3pc. 1000/800 WOG, Full Port | W1 | 150# Wafer | |
| 77 | 3pc. 1000/800 WOG, Full Port, Sanitary | W3 | 300# Wafer | |
| HP | 3pc. Forged High Purity | W6 | 600# Wafer | |
| H78 | 3pc. Cast High Purity, Encapsulated Bolts | |||
| 83 | 3pc. 2000/1500 WOG, Full Port |
5 Valve Size |
||
| 8R | 3pc. 2000/1500 WOG, Regular Port | 0025 | 1/4″ | |
| 88 | 3pc. Direct Mount 2000/1500/1000 WOG, Full Port | 0038 | 3/8″ | |
| R8 | 3pc. Direct Mount 2000/1500 WOG, Regular Port | 0050 | 1/2″ | |
| 90 | 2pc. Flanged Full Port (Investment Cast) | 0075 | 3/4″ | |
| 91 | Unibody Regular Port Flanged | 0100 | 1″ | |
| 93 | 2pc. Flanged Full Port (Sand Cast) | 0125 | 1-1/4″ | |
| V7 | 3pc. Sanitary, V-Port | 0150 | 1-1/2″ | |
| V8 | 3pc. V-Port | 0200 | 2″ | |
| V9 | Flanged V-Port | 0250 | 2-1/2″ | |
| D9 | Direct Mount Flanged | 0300 | 3″ | |
| T5 | Tank Bottom 3pc. | 0400 | 4″ | |
| C8 | Cryogenic 3pc. Full Port | 0600 | 6″ | |
| CR | Cryogenic 3pc. Regular Port | 0800 | 8″ | |
| DR | 3-Way Bottom Entry Diverter Valve | 1000 | 10″ | |
| LB | PFA Lined Split Body Flanged Ball Valve | 1200 | 12″ | |
| P1 | Schedule 10 Piggable Valve | |||
| MU | Metal Seat Unidirectional Shutoff, Floating Ball |
6 Seat, Lining & Trim Materials |
||
| MB | Metal Seat Bidirectional Shutoff, Floating Ball | X | Reinforced TFE Seats (RTFE) | |
| MS | Metal Seat Scraper Seat Design | P | Virgin TFE (PTFE) | |
| MX | Metal Seat 3 pc. Bidirectional, Floating Ball | U | UHMWPE Seats | |
| M3 | 3-Way Metal Seat | D | Delrin® | |
| VS | Segment V-Port, Soft | S | 50/50 STFE Seats | |
| VM | Segment V-Port, Metal Graphite Packing | C | 25% CS Powder/ 75% TFE Seats (CTFE) | |
| VV | Segment V-Port, Metal Viton® Packing | T | TFM™-1600 | |
| WB | Block and Bleed Isolation Valve, 2000 WOG | F | TFE Cavity Filler | |
| W6 | Block and Bleed Isolation Valve, 6000 WOG | K | PCTFE (Cryogenic) | |
| L | PFA Lined w/ PTFE Seats | |||
3 Body Material |
M | MG1241 | ||
| Blank | No Designation=SST Body and Trim | Z | PEEK | |
| A | Alloy 20 | 2 | Tungsten Carbide Coated 316 SST Seats & Ball | |
| C | Carbon Steel Body | 3 | HCr Coated Ball/Stellite® Inlay Seats | |
| L | Low Carbon 316L Stainless Steel | 4 | Chrome Carbide Coated 316 SST Seats & Ball | |
| J | Low Carbon 304 Stainless Steel | 8 | Inconel® 718+CrC | |
| H | Carbon Body /Hastelloy Ball & Stem | |||
| Q | Carbon Steel Body/Monel Ball & Stem |
7 Special Designation |
||
| R | 316 SST Body/Monel Ball & Stem | X | No Specials | Series Standard | |
| T | Hastelloy C-276 Body & Trim | G | Gear Operator | |
| E | Electropolished Stainless Steel | L | Lockable Handle (HP Series) | |
| Z | Epoxy Coated Carbon Steel | R | Regular Port Valve | |
| D | CD3MN Duplex SST | O | Oval Handle (Available on Some) | |
| G | CE3MN Super Duplex SST | S | Spring Return Handle (Direct Mount Only) | |
| 2 | F316L (SF4) Electropolished Forged | |||
| 3 | CF3M (SF4) Electropolished Cast | |||
| 4 | F316H Forged | |||
| 5 | LCB | |||
| 8 | LCC | |||
| 6 | WC6 | |||
| 9 | WC9 | |||
8 Additional Specials |
9 Special Designation |
|||
| X | No Specials | Series Standard | Blank | No Designation, SST Stem | |
| O | Oxygen Cleaned | 3 | 30° V-Port (V-ball) | |
| Z | Special End Configuration | 6 | 60° V-Port (V-ball) | |
| V | Vented Ball | 9 | 90° V-Port (V-ball) | |
| E | Bonnet Extension Lockable Handle | A | A 17-4 PH® Stem | |
| F | Fugitive Emissions Bonnet | B | XM-19 (Nitronic 50) Stem | |
| D | Degreased & Bagged | C | Duplex 2205 Stem | |
| D | Inconel® 718 Stem | |||
| L | L-Port 3-Way Arrangement | |||
| T | T-Port 3-Way Arrangement | |||
| K | FFKM O-Ring (31 Series) | |||
| X | No Specials, Standard (HP/H78 Series) | |||
| S | Anti-Static Option (HP/H78 Series) | |||

