Cast Iron Butterfly Valves Models T-335 / T-337

Valve Category:

Butterfly Valves

Valve Subcategory

Cast Iron - Wafer Type

Manufacturer

Legend Valve

LEGEND MODELS T-335 and T-337 butterfly valves are a wafer design made of ASTM A-126 cast iron. They have an aluminum bronze disc and stainless steel shaft. They offer a bubble tight seal and are bi-directional flow. The extended neck is ideal for insulated pipe. The ten position handle is standard. Intended for general piping applications requiring a positive shut-off.

T-335AB: ALUMINUM BRONZE DISC, EPDM SEAT
T-335DI: DUCTILE IRON DISC, EPDM SEAT
T-335SS: 316 STAINLESS STEEL DISC, EPDM SEAT*


T-337AB: ALUMINUM BRONZE DISC, BUNA-N SEAT
T-337DI: DUCTILE IRON DISC, BUNA-N SEAT
T-337SS: 316 STAINLESS STEEL DISC, BUNA-N SEAT*


T-335AB-G: ALUMINUM BRONZE DISC, EPDM SEAT
T-335DI-G: DUCTILE IRON DISC, EPDM SEAT
T-335SS-G: 316 STAINLESS STEEL DISC, EPDM SEAT*


T-337AB-G: ALUMINUM BRONZE DISC, BUNA-N SEAT
T-337DI-G: DUCTILE IRON DISC, BUNA-N SEAT
T-337SS-G: 316 STAINLESS STEEL DISC, BUNA-N SEAT*


ALL BUTTERFLY VALVES ARE 200 W.O.G. NON-SHOCK.
*INDICATES SPECIAL ORDER ITEMS. PLEASE CONTACT CUSTOMER SERVICE FOR MORE INFORMATION
**UP TO 100 P.S.I. ONLY.


  • Flange connection features of the valve's body conform to ANSI class 125/150 flange dimensions.
  • Manufactured in conformance to the following standards:
    • MSS SP-67
    • API 609
    • AWWA C504
    • EN 593
  • Manufactured in an ISO accredited facility


MATERIAL SPECIFICATION
PART MATERIAL SPECIFICATION
Butterfly Valve Material Specifications 1 Body Ductile Iron, epoxy coated ASTM A536 UNS F32800
2 Disc
(optional disc material)
(optional disc material)
Aluminum Bronze
Ductile Iron
Stainless Steel
 (T-335AB, T-337AB)
 (T-335DI, T-337DI)
 (T-335SS, T-337SS)
ASTM B148 UNS C95800
ASTM A536 UNS F32800
ASTM A351 CF8M (investment cast 316)
3 Seat:
T-335AB & T-335AB-G
T-337AB & T-337AB-G
Seat backing

EPDM
Buna-N (NBR)
Phenolic resin

Commercial grade
Commercial grade
4 Upper shaft Stainless steel AISI 410 stainless steel
5 Lower shaft Stainless steel AISI 410 stainless steel
6 Bushings 
(upper and lower)
PTFE PTFE
7 O-ring:
T-335AB & T-335AB-G
T-337AB & T-337AB-G

EPDM
Buna-N (NBR)

Commercial grade
Commercial grade
8 Half ring Stainless steel AISI 316 stainless steel
9 Washer Stainless steel AISI 316 stainless steel
10 Retainer ring Stainless steel  AISI 316 stainless steel

VALVE WEIGHT
VALVE SIZE T-335-G T-337-G T-365-G T-367-G T-335 T-337 T-365 T-367
2" 26 lbs. 28 lbs. 9 lbs. 11 lbs.
2-1/2" 28 lbs. 30 lbs. 11 lbs. 13 lbs.
3" 28 lbs. 31 lbs. 11 lbs. 14 lbs.
4" 31 lbs.* 38 lbs.* 14 lbs. 21 lbs.
5" 35 lbs.* 43 lbs.* 18 lbs. 26 lbs.
6" 38 lbs.* 46 lbs.* 21 lbs. 29 lbs.
8" 62 lbs.* 74 lbs.* 35 lbs. 47 lbs.





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Legend Valve Model T-335 / T-337 Dimensions in Inches Diagram

DIMENSIONS IN INCHES
VALVE SIZE A B C D E F (wafer) F (lug) G (wafer) H I J K L M N O P D1
2" 6.34 3.15 1.65 2.08 2.25 3.94 4.76 3.34 3.03 1.26 12.00 5.19 4.25 8.00 2.75 1.50 10.50 4.75
2-1/2" 6.89 3.50 1.76 2.54 2.25 4.72 5.43 3.79 3.03 1.26 12.00 5.19 4.25 8.00 2.75 1.50 10.50 5.50
3" 7.13 3.74 1.78 3.10 2.25 5.00 5.75 2.41 3.03 1.26 12.00 5.19 4.25 8.00 2.75 1.50 10.50 6.00
4" 7.87 4.49 2.05 4.09 2.75 6.14 8.11 2.79 3.62 1.26 12.00 5.19 4.25 8.00 2.75 1.50 10.50 7.50
5" 8.39 5.00 2.13 4.85 2.75 7.48 9.21 3.24 3.62 1.26 12.00 5.19 4.25 8.00 2.75 1.50 10.50 8.50
6" 8.90 5.47 2.20 6.13 2.75 8.35 10.31 3.59 3.62 1.26 12.00 5.19 4.25 8.00 2.75 1.50 10.50 9.50
8" 10.24 6.89 2.39 7.97 3.50 10.55 12.32 4.44 4.53 1.77 12.00 7.25 6.25 12.38 3.25 1.69 14.00 11.75


CV FACTORS AT VARIOUS DISC OPENINGS (in degrees)
VALVE SIZE 10° 20° 30° 40° 50° 60° 70° 80° 90° GEAR RATIO STEM DIA.
2" 0.119 7.170 13.46 22.44 34.00 49 57 60 62 24:1 0.500
2-1/2" 0.185 11.21 28.68 44.68 65.28 87 106 118 123 24:1 0.500
3" 0.267 16.14 41.30 64.35 94.20 135.3 172 208 239 24:1 0.500
4" 0.467 28.70 73.42 114.4 167.5 240.6 314 384 438 24:1 0.625
5" 0.744 44.84 114.7 178.7 261.7 375.9 503 654 817 24:1 0.750
6" 1.07 64.57 165.2 257.4 376.8 541.3 744 995 1320 24:1 0.750
8" 1.90 114.8 293.7 457.6 669.9 962.3 1367 1772 3019 30:1 0.875
Cast Iron Butterfly Valves Models T-335 / T-337
   WARNING: Cancer and
   Reproductive Harm -
   www.P65Warnings.ca.gov