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Jamesbury Series 835 Soft-Seated Butterfly Valve
Brand: ValmetSeries 835 process-rated ANSI Class 150 high performance Wafer-Sphere butterfly valves are an excellent effective alternative for shutoff pressures up to 100 psi (6.9 bar).
The Series 835 provides the same long-lasting tight shutoff capability, excellent flow characteristics, and long service life as the fully ANSI-rated series 815.
They are available in 30" to 60" (DN 750 to 1500) designs.
The Series 835 Wafer-Sphere butterfly valve is available with trim materials and seat combinations to fit a wide variety of applications from water to abrasives and from air to steam.
Valves in this bulletin meet NACE MR0103 requirements when equipped with 17-4 PH shafts.
Optionally available are valves specifically pre- pared for oxygen or high-vacuum service and valves conforming to the European Pressure Equipment Directive 97/23/EC requirements.
Specifications
Brand
Approvals & Certifications
- CE
- MSS-SP61, SP-25, SP-44, SP-55, SP-68
Bearing Material
- Shaft: 316 Stainless Steel
- Shaft: PTFE Composite
- Thrust: Stainless Steel
Disc Material
- 316 Stainless Steel
Enclosure, Body Details
- Wafer
Enclosure, Body Material
- 316 Stainless Steel - ASTM A351 CF8M, 1.4408 - 835L-11-36HB, 835L-11-3600, 83PL-11-36HB, 83PL-11-3600, F835L-11-36HB, F83PL-11-36HB Model
- 316L Stainless Steel - ASTM A182 F316L - 835L-11-36HB, 835L-11-3600, 83PL-11-36HB, 83PL-11-3600, F835L-11-36HB, F83PL-11-36HB Model
- Carbon Steel (ASTM A216 WCB, ASTM A105) - 835L-11-22HB, 835L-11-2236, 83PL-11-22HB, 83PL-11-2236, F835L-31-22HB, F83PL-31-22HB Model
Flange Size - 30” (DN 750)
- 30” (DN 750) - 150# ANSI
Flange Size - 36” (DN 900)
- 36” (DN 900) - 150# ANSI
Flange Size - 40” (DN 1000)
- 40” (DN 1000) - 150# ANSI
Flange Size - 42” (DN 1050)
- 42” (DN 1050) - 150# ANSI
Flange Size - 48” (DN 1200)
- 48” (DN 1200) - 150# ANSI
Flange Size - 54” (DN 1350)
- 54” (DN 1350) - 150# ANSI
Flange Size - 60” (DN 1500)
- 60” (DN 1500) - 150# ANSI
Flow Rate
- 44,000 to 219,000 Cv
Gasket Material
- Graphite
- PTFE
Materials of Construction
- Bottom Bearing Spacer [30” to 42” (DN 750 to 1050)], Top Bearing Spacer: PTFE
- Insert (835L-11-22HB, 835L-11-2236, 83PL-11-22HB, 83PL-11-2236, F835L-31-22HB, F83PL-31-22HB Model): Carbon Steel
- Insert (835L-11-36HB, 835L-11-3600, 83PL-11-36HB, 83PL-11-3600, F835L-11-36HB, F83PL-11-36HB Model), Compression Plate, Stud, Lock Washer, Spacer, Cover Plate: Stainless Steel
- Spacer: 316 Stainless Steel
Media
- Water
NACE & NIST
- NACE MR-0103
Name Plate, Tag Material
- Stainless Steel
Nut & Bolt Material
- Hex Jam Nut: Stainless Steel
Operating Pressure
- psi: 170 to 275 (kPa: 1,170 to 1,900, bar: 11.7 to 19) - 316 Stainless Steel
- psi: 170 to 285 (kPa: 1,170 to 1,970, bar: 11.7 to 19.7) - Carbon Steel
Pressure Drop
- psi: 1 (kPa: 6.9, bar: 0.69)
Pressure Type
- Differential
Ring Material
- Top Compression [42” to 60” (DN 1050 to 1500)]: Stainless Steel
Screw Material
- Drive, Cap: Stainless Steel
Seat / Seal Material
- Seat: 316 Stainless Steel
- Seat: XTREME
- Shaft Seal, Seat: Carbon-Filled Enhanced PTFE
- Shaft Seal: Graphite
- UHMW Polyethylene
Shaft Material
- 630 Stainless Steel (17-4 PH)
- Bonnet-End (Driver), Non-Bonnet End (Idle): 316 Stainless Steel
- Bonnet-End (Driver): 630 Stainless Steel (17-4 PH)
UNF/UNC Connection
- 1”-8 UNC
- 1-1/4”-7 UNC
- 1-1/8”-8 UNC
- 3/4”-10 UNC
- 5/8”-11 UNC
- 7/8”-9 UNC