FloSource is a stocking Keystone valve distributor, with large inventory levels of Keystone butterfly valves, Keystone air actuators, and Keystone electric actuators, with same day shipping on most in stock Keystone products.
FloSource carries Keystone valves in stock through 24″, The full size range of Keystone Air and Electric Actuators, and Keystone Controls products. Please call or e-mail us for more information.
Keystone Fig 100
General Application
The figure 100 is a heavy duty, resilient seated butterfly valve that is ideally suited for many tough applications, such as bulk handling and tank trailers.
See the product brochure for more details! 
Technical Data
Size Range : 2″ thru 12″
Pressure Rating : 150 psi
Flange Standard : ANSI 125/150
Materials of Construction
Body : Cast Iron; Aluminum
Disc : Ductile Iron; Ductile Iron Nylon Coated; Aluminum Bronze; 316 Stainless Steel
Stem : Carbon Steel; 316 Stainless Steel; 17-4PH Stainless Steel
Seat : NBR; EPDM
Stem Bushing: Polyester
Disc Screws ; 316 Stainless Steel
Stem Packing: NBR
Keystone Fig 106
General Application
Ideally suited for many applications.
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Technical Data
| Size range | : 24 thru 48-inch |
| Pressure rating | : 150 psi bi-directional shutoff |
| Flange standard | : ANSI Class 125/150 flange standards |
Materials
| Part | Standard | Material | Optional |
|---|---|---|---|
| Material | Specification | Material | |
| Body | Cast iron Ductile iron | ASTM A-126, Class B ASTM A-536 Gr 65/45/12 | Carbon steel Stainless steel |
| 316 stainless steel | ASTM A-743, CF8M | ||
| Aluminum bronze | ASTM B-148, Alloy 952 | ||
| Disc | Ductile iron | ASTM A-536 Gr 65/45/12 | |
| Ductile iron with electroless nickel plating | ASTM A-536 Gr 65/45/12 | ||
| ASTM A-564 Type 630 | |||
| Stem | Stainless steel | (24 thru 36-inch) ASTM A-276 Gr 304 | |
| (42 thru 48-inch) | |||
| Seat | NBR EPDM | Fluoroelastomer (FKM) | |
| Bearings | Lubricated bronze | ||
| Packing | NBR | ||
| Taper pins | Stainless steel | ||
| Packing gland | Bronze |
Keystone Fig 221/222
General Application
Heating, ventilation, air conditioning and general industrial services.
See the product brochure for more details!
Technical Data
| Size Range: | 2″ thru 12″ |
| Styles: | 221 – wafer style |
| 222 – lug style | |
| Pressure Rating: | 250 psi |
| Bidirectional | |
| Dead End Rating: | 250 psi |
| Temperature Rating: | -40°F thru +250°F |
| Flange Accomodation: | ASME 125/150 |
Materials
| Part | Material | Material Standards |
|---|---|---|
| 1. Body | Cast Iron | ASTM A126 Class B |
| 2. Disc | 304 SS | ASTM A351 Grade CF8 |
| Aluminum Bronze | ASTM B148 UNS C95200 Grade A | |
| 316 SS | ASTM A743 Grade CF8M | |
| 3. Stem | 416 SS | ASTM A582 |
| UNS S41600 | ||
| 4. Molded-in liner | EPDM | |
| NBR | ||
| 5. Inboard bearings | Bronze | |
| 6. Upper bushing | Polyester | |
| 7. Upper stem seal | NBR |
Keystone Fig 250/251 Hygienic
General Application
A universal valve for isolation and control, in the food, dairy, brewing, pharmaceutical, beverage and chemical industries.
The Figure 250 and 251 are designed to be easily automated with any of Keystone’s actuators and controls. From the Figure 257 Vertical Actuator and Figure 783 Electronic Control Head, to the Figure 790 or Figure 79S actuator.
Click here to view the product brochure!
Technical Data
| Max Product Pressure @ 20°C | |
| 1000 kPa (10 bar) | |
| Recommended Working Pressure @ 20°C | |
| 600 kPa (6 bar) | |
| Minimum Product Pressure @ 20°C | |
| Full Vacuum | |
| General Temperature Range | |
| -10°C to 95°C | |
| Maximum Static Temperature | |
| Silicon: | 240°C |
| Epdm: | 120°C |
| Nitrile: | 100°C |
| Viton®: | 230°C |
| Note: | |
| Although the various seat materials available can withstand temperatures above the 95°C stated for short periods of time, such as for sterilization and certain applications, the serviceability of these seats at elevated this is with the application concerned. best determined from experience gained media, pressure and other variables. Therefore, temperatures does vary depending on the | |
Materials
| Description | Material | Standard |
|---|---|---|
| Body | 316L SS | ASTM A276 |
| Disc Stem | 316 SS | ASTM A743 CF8M |
| Seat | Silicon (White) | FDA |
| EPDM (Black) | FDA | |
| Nitrile (Black) | FDA | |
| Viton® (Red) | – | |
| Handle Assembly | High Impact Glass Reinforced Polymer or 304 SS | – |
| Handle Plug/Screw | Santoprene/304 SS | Commercial |
| Notch Plate | 304 SS | ASTM A743 CF8 |
| Body Fasteners | 304 SS | ASTM A276 |
| Bearings | PVDF | Commercial |
Keystone Fig 601/602
General Application
Ideally suited for many industrial applications such as food and beverage, pulp and paper, chemical, mining, water treatment, power, and automotive where a heavy-duty resilient seated butterfly valve is required. Available in a wide variety of body, disc and seat materials to fit a wide variety of media applications.
Click here to view the product brochure!
Technical Data
Size Range:
2 thru 24-inch wafer and lug styles
Pressure Rating:
2 thru 12-inch – 250 psi
14 thru 24-inch – 200 psi
Teflon® seat or elastomer covered disc
2 thru 12-inch – 150 psi
Flange Standard: ANSI Class 125/150
Materials
| Part | Standard Material | Material Specification |
|---|---|---|
| 1. Body | Cast iron | ASTM A-126, Class B |
| Ductile iron | ASTM A-395 GR 60/40/18 | |
| Bronze* | ASTM B-148 C9540O | |
| 316 Stainless Steel* | ASTM A-351 CFBM | |
| 2. Disc | Ductile Iron/Nickel Plated | ASTM A-536 GR 65/45/12 |
| Aluminum bronze | ASTM B-148, C95400 | |
| 316 Stainless steel | ASTM A-351 CFBM | |
| EPDM Coated (2 thru 12-inch) | ||
| NBR Coated (2 thru 12-inch) | ||
| PVDF Coated | ||
| 3. Stem | 316 Stainless steel (2 thru 12-inch) | ASTM A-276 |
| 17-4 Stainless steel (14 thru 36-inch) | ASTM A-564 UNS | |
| S17400 Condition H-1075 | ||
| 4. Seat | EPDM (-20°F thru 250°F) | |
| NBR (0°F -180°F) | ||
| White Neoprene (0°F – 180°F) | ||
| Black Neoprene (0°F – 18O°F) | ||
| Fluoroelastomer (0°F – 300°F) | ||
| TefIon® (-20°F – 250°F) (2 thru 12-inch) | ||
| 5. Bearing** | TefIon® Gar-FiI (2 thru 24-inch) | |
| 6. Pin | Carbon Steel | |
| * Limited size and body style. These bodies come standard with a vented shaft and food grade seats. | ||
| ** Valves with 316 SS bodies are provided with two additional bearings in the lower stem journal. | ||
Keystone Fig 60W/60L
General Application
Ideally suited for many industrial applications such as food and beverage, pulp and paper, chemical, mining, water treatment, power, and automotive where a heavy-duty resilient seated butterfly valve is required. Available in a wide variety of body, disc and seat materials to fit a wide variety of media applications.
Click here to see the product brochure!
Technical Information
| Size Range: | 2″ thru 24″ wafer and lugged styles |
| Pressure Rating: | 2″ thru 12″ – 250 psi |
| 14″ thru 24″ – 200 psi | |
| Teflon® seat or elastomer covered disc | |
| 2″ thru 12″ – 150 psi | |
| Dead End Rating: | Full rated in preferred direction of flow |
| Flange Standard: | ASME Class 125/150 |
Materials
| Part | Standard Material | Material Specifications |
|---|---|---|
| 1. Body | Cast Iron1 | ASTM A126 Class B |
| Ductile Iron (2″ thru 12″) | ASTM A395 Grade 60/40/18 | |
| Ductile Iron2 (14″ thru 24″ Lug style) | ASTM A536 Grade 65/45/12 | |
| 316 Stainless Steel3 | ASTM A351 CF8M | |
| 2. Disc | Ductile Iron/Nickel Plated | ASTM A536 Grade 65/45/12 |
| Aluminum Bronze | ASTM B148 C95400 | |
| 316 Stainless Steel | ASTM A351 CF8M | |
| EPDM Coated (2″ thru 12″) | ||
| NBR Coated (2″ thru 12″) | ||
| 3. Stem | 416 Stainless Steel (standard) | ASTM A582 UNS S41600 Cond. A |
| 316 Stainless Steel (optional)4 | ASTM A276 UNS S31600 Cond. A | |
| 4. Seat | EPDM Food Grade (-20°F – 250°F) NBR (0°F – 180°F) | |
| Fluoroelastomer (0°F – 300°F) | ||
| Teflon® (-20°F – 250°F) (2″ thru 12″) | ||
| 5. Bearing | Teflon® Gar-Fil® (2″ thru 24″) | |
| 6. Pin | Carbon Steel |
Keystone Fig 61W/61L
General Application
These valves are ideally suited to many applications where tight shut-off is required, such as:
- Industrial Processing
- Water & Wastewater
- Dry Bulk Conveying
- Paper Mills
- Light Slurry Handling
- Food & Beverage
- HVAC
- Transportation
Click here to view the product brochure!
Technical Data
| Size Range: | 2" thru 12" |
| Pressure: | 235 psi |
| End of line: | 150 psi |
| Temperature: | -40°F to +300°F |
| End Connection: | ASME 125/150 |
Materials
| Description | Standard Material | Material Specification |
|---|---|---|
| Body | Ductile Iron | ASTM A536 Gr 65-45-12 |
| Disc | Super Duplex SAF 2507 | ASTM A890 5A |
| Ductile Iron (Nylon Coated) | ASTM A536 Gr 65-45-12 | |
| Stem | 416 Stainless Steel (Standard) | ASTM A582 Gr 416 cond. H |
| 316 Stainless Steel (Optional) | EN10088-3 X5CrNiMo 17-12-2 | |
| Super Duplex Stainless Steel | EN10088-3 X2CrNiMoN25-7-4 | |
| Seat | EPDM (Food Grade) | – |
| NBR (Food Grade) | – | |
| Stem Bush | Polyester | – |
| Stem Packing | NBR | – |
| Body Screws | 316 Stainless Steel | – |
| Bearings | Sintered Metal | ASTM B439 Grade 1 |
Keystone Fig 990/999/920/992
General Application
Figure 990 (wafer) and Figure 920 (lug) are used when sanitary service or corrosion resistance is required. Heavy duty applications include food and beverage, pharmaceutical, pulp and paper, mining and power industries. Available with PTFE lining for light corrosive services and rubber lining for light abrasive services.
Click here to see the product brochure!
Technical Data
Sizes:
Figure 990 (wafer style) 1″ to 20″
Figure 920 (lug style) 2″ to 20″
Pressure Ratings:
1″ to 12″ – 150 psi
14″ to 20″ – 75 psi
• PTFE or elastomer mold disc
2″ to 12″ – 100 psi
14″ to 20″ – 75 psi
• White NBR seats
2″ to 20″ – 50 psi
Materials
| Description | Material | Material Standard | |
|---|---|---|---|
| Two-piece body | Cast iron | ASTM A-126, Class B | |
| with top plate | Ductile iron (lug style only) | ASTM A-395 Gr.60/40/18 | |
| 316 Stainless steel | ASTM A-743 CF8M1 | ||
| Thin profile disc | 316 Stainless steel | ||
| Steel Teflon® molded2 | |||
| Steel EPDM molded2 | |||
| Steel NBR molded2 | |||
| Stem | 316 Stainless steel | ||
| Seat | NBR food grade(0°F to 212°F) | ||
| EPDM food grade(-40°F to 250°F) | |||
| PTFE-lined EPDM (-20°F to 300°F) | |||
| PTFE-lined NBR (0°F to 250°F) | |||
| Stem packing | NBR | ||
| Upper stem bushing | Polyester | ||
| Notes: | |||
| 1.Not available on 2 1/2" and 5". Stainless steel bodies,2" to 6", include upper and lower stem bearings. | |||
| 2.Not available on 1", 1 1/2", 2 1/2" and 5". | |||
Keystone Fig AR1/AR2
General Application
Ideally suited for many high performance applications, such as fire protection, water treatment, cooling systems, food and beverage and bulk product handling. Consult us for appropriate materials for specific services.
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Technical Data
Size Range :
Figure AR1 (wafer style) 2 thru 36-inch
Figure AR2 (lugged style) 2 thru 24-inch
Flange Standard :
ANSI Class 125/150
Materials
| Part | Standard Material | Material Specification | Optional Material |
|---|---|---|---|
| 1. Body | Cast iron | ASTM A-126, Class B | Carbon steel |
| Ductile iron | ASTM A-395 GR 60/40/18 | Stainless steel | |
| 2. Disc | Ductile iron | ASTM A-536 GR 65/45/12 | |
| Aluminum bronze | ASTM B-148, UNS C95200 Grade A | ||
| 316 Stainless steel | ASTM A-743, CF8M | ||
| 3. Stem | 316 Stainless steel (2 thru 12-inch) | ASTM A-276 UNS S31600 | |
| 18-8 Stainless steel (14 thru 20-inch) | ASTM A-276 UNS S30400 | ||
| 17-4 PH Stainless steel (24 thru 36-inch) | ASTM A-564 UNS S17400 | Phosphate treated steel | |
| (2 thru 20-inch) | ASTM A-108 UNS G10450 | ||
| 4. Seat | NBR food grade (0°F thru 212°F) | Fluoroelastomer (FKM) | |
| EPDM food grade (-40°F thru 250°F) | White NBR | ||
| 5. Upper stem bushing | Polyester (2 thru 20-inch) Bronze (24 thru 36-inch) | ||
| 6. Stem packing | NBR | ||
| 7. Torque plug (2 thru 12-inch) | 316 Stainless steel | ASTM A-276 UNS S31600 condition A | |
| 7. Disc screws (14 thru 20-inch) | 316 Stainless steel | ASTM F-593 Group 2 condition CW1 | |
| 7. Taper pins (24 thru 36-inch) | 17-4 PH Stainless steel | ASTM A564 UNS S17400 H1075 | |
| 8. Bearings (2 thru 12-inch) | Sintered metal |
Keystone K-Ball
Application
The range includes valves ideal for general industrial and service applications including water; oil, gas and chemical processes. Certain models also offer designs suitable for more hazardous services such as fuel and inflammable substances.
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Technical Data
| Sizes : | DN8 to DN3OO |
| 1/A" to 12" | |
| Pressure ratings : | PN10/16, |
| PN25/40, | |
| PN63 | |
| ANSI 150/300 | |
| JIS 10K/20K |
End Connections
| Screwed : | BSPR BSPT NPT |
| Welded : | Socket & Butt Weld |
| Flanged : | ANSI 150/300 |
| PN10/16, PN25/40 | |
| JIS 10K/20K |
Keystone K-LOK Fig 310/312
General Application
High performance applications such as steam, chill water, water, utility lines, gasoline, natural gas, air, oil, jet fuels and process lines. Consult FloSource for appropriate materials for specific services.
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Technical Data
| Size Range: | 2 thru 12-inch [50 thru 300 mm] |
| Rating: | ASME Class 150 |
| Pressure: | 285 psi bi-directional, dead-end |
| Vacuum: | 50 microns |
| Temperature: | -20°F to 350°F |
Materials
| Part | Material | Material Standard | Optional Material |
|---|---|---|---|
| Stem | 17-4PH | ASTM A 564 Cond. H1075 or H 1100 | 316 SS Cond. B |
| Disc | 316 SS | ASTM A 351-CF8M | |
| Gland bridge | 17-4SS HT | ASTM A747-CB 7C1-1 | |
| Packing gland follower | 316 SS | ASTM A 276-316 | |
| Blowout-resistant ring | 18-8 SS | ||
| Packing | TFE | Die Formed TFE Braid | Graphite |
| Anti-extrusion ring | 316 SS | ASTM A 276-316 | |
| Bearings (upper & lower) | CS SS | TFE impregnated/fiber reinforced TFE impregnated/fiber reinforced | |
| Body | CS SS | ASTM A216-WCB ASTM A351-CF8M | |
| Seat retaining ring | CS SS | ASTM A36 ASTM A240 | |
| Seat | RTFE | Reinforced polytetrafluoroethylene | PTFE |
| Wedge pins | 17-4PH | ASTM A564 | 316 SS Cond. B |
| Seat backing O-ring | PFA Encapsulated FKM | ||
| Circular key | 304 SS | ASTM A240 | |
| Thrust bearing (upper & lower) | 316 SS | Nitrided |
Keystone K-LOK Fig 360/362/370/372
General Applications
- Airport Refueling
- Hydrocarbon Processing
- HVAC
- Chemical Processing
- Purified Gas
- Steam and Vacuum Services
- Potable Water
Click here to view the product brochure!
Technical Data
| Size Range: | 2" thru 36" |
| Pressure Rating: | ASME/ANSI Class |
| 150 and 300 | |
| Temperature Rating:-20°F to 1000°F | |
| Fire Safe Option | |
| NSF-61 trim available in 3" thru 36" | |
Materials
| Part | Material | Material standard |
|---|---|---|
| 1.Stem and | 17-4 PH | ASTM A564 Condition H1075 or H1100 |
| taper pins | 316B SS | ASTM A276-316 Condition B (10" and smaller) |
| NITRONIC 50® | ASTM A276-XM19 | |
| K-Monel®500 | QQ-N-286 UNS N005500 Class A age-hardened | |
| Inconel®718 | ||
| 2.Body | Carbon steel | ASTM A216-WCB |
| Stainless steel | ASTM A351-CF8M | |
| Nickel aluminum bronze | MIL B24480 CDA C95800/ASTM B148 | |
| 4.Packing gland follower | 316 stainless steel | |
| 5.Stem packing | PTFE | |
| Graphite | ||
| Style 9000 EVSP simplified | ||
| 6.Stem bearing | 316 stainless steel/Nitride, | |
| PTFE/Bronze, PTFE/Composite | ||
| 7.Body gasket | Non-asbestos fiber, Graphite | |
| PTFE | ||
| 8.Disc | 316 stainless steel | ASTM A351-CF8M |
| 316 stainless steel/ENP | ASTM A351-CF8M/electroless nickel plated | |
| Monel® | QQ-N-288 Composition A | |
| 9.Seat | Polymer | PTFE, RTFE, UHMWPE |
| Elastomer | NBR, EPDM, Fluoroelastomer (FKM) | |
| Metal | 316 stainless steel, Monel® | |
| Fire-safe | RTFE/316 stainless steel | |
| 10.Seat backing ring | Stainless steel | |
| 11.Seat retainer ring | Carbon steel316 Stainless steel | |
| Nickel aluminum bronze | ||
| 12.Flange locator plate | Stainless steel | |
| Carbon steel/zinc plated | ||
| 13.Disc locating shoulder | 316 stainless steel | |
| 14.Bottom cover | Non-asbestos fiber or Graphite | |
| gasket | ||
| 15.Bottom cover plate | 316 stainless steel | |
| 16.Thrust washer | Stainless steel/Nitride |
Recommended Standards and Specifications
| ASME | B16.34 | Steel valves |
| B31.1 | Power piping (Sect 107) | |
| B31.3 | Chemical plant and petroleum refinery piping | |
| B16.5 | Steel pipe flanges and flange fittings | |
| MSS | SP-6 | Standard finishes for pipe flanges |
| SP-25 | Standard marking systems for valves | |
| SP-55 | Quality standard for steel casting | |
| SP-61 | Pressure testing of steel valves | |
| SP-68 | High pressure offset disc butterfly valves | |
| API | 609 | Butterfly valves (most models) |
| 607 | Fire test for soft seated quarter-turn valves | |
| 598 | Valve inspection and test | |
| BS | 5146 | Inspection and test of steel valves for the petroleum, |
| petrochemical and allied industries | ||
| 4504 | Flanges and bolting for pipes, valves and fittings | |
| JIS | 2215 | Basic dimensions for steel pipe flanges |
| NSF | 61 | Potable water (special trim) |
Keystone K-LOK Series 36/37
General Applications
- Modulating service
- Airport refueling
- Hydrocarbon processing
- Chemical/petrochemical processing
- Purified gas
- Steam and vacuum services
- Power and utilities
- Refrigeration
- HVAC
Click here to view the product brochure!
Technical Data
| Size range: | 2" to 36" | Temperature rating:-40°F to 1000°F |
| Vacuum rating: | 4 x 10-5in Hg | Full compliance to API 609 Standard. |
| Pressure rating: | Series 36 –ASME 150 | Metal seated and fire-safe valves are available. For more information on these trims see Figures 360/362 data sheet (KEYMC-0032). |
| Series 37 –ASME 300 | ||
| Lug body is full rated for bi-directional dead end service as a standard. | ||
Standard Materials of Construction
| Description | Material | Material Standard |
|---|---|---|
| Body | Carbon steel | ASTM A216-WCB |
| Stainless steel | ASTM A351-CF8M | |
| Disc | 316 SS | ASTM A351-CF8M |
| 316 SS/ENP | ASTM A351-CF8M/ | |
| electroless nickel plated | ||
| Stem and taper pins | 316B SS | ASTM A276-316 |
| Condition B | ||
| NITRONIC 50® | ASTM A276-XM19 | |
| 17-4 PH SS | ASTM A564 Condition | |
| H1075 or H1100 | ||
| Gland bridge | 17-4PH SS | – |
| Packing gland follower | 316 SS | – |
| Stem packing | PTFE, Graphite | – |
| Seat | Polymer | PTFE, RTFE, UHMWPE |
| Elastomer | NBR, EPDM, | |
| Fluoroelastomer (FKM) | ||
| Seat retainer ring gasket | Non-asbestos fiber,Graphite | Not used with Elastomer seats |
| Seat retainer ring | Carbon steel | ASTM A216-WCB |
| 316 SS | ASTM A351-CF8M | |
| Anti-extrusion ring | 316 SS | – |
| Stem bearing | RTFE/Composite | – |
| 316 SS/Nitride | ||
| Bottom cover | Non-asbestos fiber | |
| gasket | Graphite | – |
| Stem retention ring | 316 SS | – |
| Bottom cover plate | Carbon steel | ASTM A216-WCB |
| 316 SS | ASTM A351-CF8M | |
| Disc locating spacer | 316 SS | – |
| Flange locator plate (wafer only) | Stainless steel | – |
| Carbon steel/zinc plated |