Babbitt chainwheel technical data

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SELECTION OF CHAINWHEEL OPERATORS

Valve Handwheel Outside Diamater Range, Inches (cm)
Chain Operator Number
Wheel Outside Diameter, Inches (cm)
Uses Chain Trade Size
Weight of Standard Wheel, Pounds
2 to 4 (5.08 – 10.16)
0
4 (10.16)
2
2
4-1/4 to 5-3/4
1
5-3/4 (14.61)
1/0
4
6 to 7-1/2 (15.24 – 19.05)
1-1/2
7-1/2 (19.05)
1/0
5
7-3/4 to 9 (19.69 – 22.86)
2
9 (22.86)
1/0
10
9-1/4 to 12-1/2 (23.50 – 31.75)
2-1/2
12 (30.48)
4/0
15
12-3/4 to 15-1/2 (32.39 – 39.37)
3
15-1/2 (39.37)
4/0
18
15-3/4 to 19 (40.01 – 48.26)
3-1/2
18-1/2 (46.99)
4/0
28
19-1/4 to 22 (48.90 – 55.88)
4
21-1/2 (54.61)
5/0
37
22-1/2 to 26 (57.16 – 66.04)
4-1/2
25-3/4 (64.41)
5/0
47
26-1/4 to 30 (66.68 – 76.20)
5
30 (76.20)
5/0
58
30-1/4 to 36 (76.20 – 91.44)
5**
30 (76.20)
5/0
58

**Special attachment clamps for #5 wheel will accommodate up to 36″ valve handwheel

CHAINWHEEL DIMENSIONS

Chain Wheel Size # 0 1 1-1/2 2 2-21/2 3 3-1/2 4 4-1/2 5
A – Overall height In 4-5/8 (11.75) 6-3/8 (16.19) 7-3/4 (19.69) 10-1/2 (26.67) 12-1/2 (31.75) 15-1/2 (39.37) 18-1/2 (46.99) 21/1/2 (54.61) 25-3/4 (65.41) 30-1/4 (76.84)
B – Inner Bolt Circle 1-1/2 (3.81) 2-1/2 (6.35) 3-1/2 (8.89) 4-1/2 (11.43) 5-1/2 (13.97) 8-1/2 (21.59) 11-1/2 (29.21) 11-1/2 (29.21) 14-1/2 (36.83) 18-3/4 (47.63)
C – Outer Bolt Circle 1-7/8 (4.76) 3-1/2 (8.89) 5 (12.70) 6-5/8 (16.83) 9-1/4 (23.50) 12-3/8 (31.43) 15-1/2 (39.37) 17-3/4 (49.05) 21-1/4 (53.98) 25-1/4 (65.14)
D – Hub Opening (Diameter) 1/2 (1.27) 7/8 (2.22) 7/8 (2.22) 2-1/8 (5.40) 2-1/8 (5.40) 2-1/8 (5.40) 3 (7.62) 3 (7.62) 3 (7.62) 3 (7.62)
E – Slot Size (Width) 1/4 (.25) 3/8 (.95) 7/16 (1.11) 7/16 (1.11) 7/16 (1.11) 7/16 (1.11) 7/16 (1.11) 5/8 (1.59) 5/8 (1.59) 5/8 (1.59)
F – Rear Opening 3/4 (1.91) 1-1/2 (3.81) 1-7/8 (4.76) 3-1/8 (7.94) 3-1/2 (8.89) 3-1/2 (8.89) 4-7/8 (12.38) 4-7/8 (12.38) 4-5/8 (11.75) 4-3/4 (12.07)
G – Hub Depth (Shoulder to Rear) 1-1/8 (2.86) 1-1/2 (3.81) 1-3/4 (4.45) 1-3/4 (4.45) 1-3/4 (4.45) 1-7/8 (4.76) 1-7/8 (4.76) 1-7/8 (4.76) 1-7/8 (4.76) 2 (5.08)
H – Rim Thickness 7/8 (2.22) 1-1/3 (3.39) 1-1/3 (3.39) 1-1/3 (3.39) 1-1/4 (3.18) 1-1/4 (3.18) 1-1/4 (3.18) 1-1/2 (3.81) 1-1/2 (3.81) 1-1/2 (3.81)
I – Overall Depth 1-3/4 (4.45) 2-1/4 (5.72) 2-1/2 (6.35) 2-1/2 (6.35) 2-5/8 (6.67) 3-1/8 (7.94) 3-1/8 (7.94) 3-1/8 (7.94) 3-1/8 (7.94) 3-1/8 (7.94)

LENGTH OF CHAIN REQUIRED

Chain Wheel Size # Length In Feet
0 [(DROP FROM VALVE STEM MINUS 3 FEET) X 2] PLUS 1 FOOT
1 [(DROP FROM VALVE STEM MINUS 3 FEET) X 2] PLUS 1 FOOT
1-1/2 [(DROP FROM VALVE STEM MINUS 3 FEET) X 2] PLUS 2 FEET
2 [(DROP FROM VALVE STEM MINUS 3 FEET) X 2] PLUS 2 FEET
2-1/2 [(DROP FROM VALVE STEM MINUS 3 FEET) X 2] PLUS 2 FEET
3 [(DROP FROM VALVE STEM MINUS 3 FEET) X 2] PLUS 2 FEET
3-1/2 [(DROP FROM VALVE STEM MINUS 3 FEET) X 2] PLUS 4 FEET
4 [(DROP FROM VALVE STEM MINUS 3 FEET) X 2] PLUS 4 FEET
4-1/2 [(DROP FROM VALVE STEM MINUS 3 FEET) X 2] PLUS 4 FEET
5 [(DROP FROM VALVE STEM MINUS 3 FEET) X 2] PLUS 4 FEET

HAMMER-BLOW SPECIFICATIONS

Chain Wheel Size Weight Combined Assembly, Pounds Diameter of Valve Wheels Assembly Will Fit, Inches (cm)
2 14 7-3/4 to 9 (19.7 – 22.9)
2-1/2 21 9-1/4 to 12-1/2 (23.5 – 31.8)
3 31 12-3/4 to 15-1/2 (32.4 – 39.4)
3-1/2 43 15-3/4 to 19 (40 – 48.3)
4 58 19-1/4 to 22 (48.9 – 55.9)
4-1/2 70 22-1/4 to 26 (56.5 – 66.0)
5 118 26-1/4 to 30 (66.7 – 76.2)
5** 118 30 – 36 (66.7 – 76.2)

**Special attachment clamps for #5 wheel will accommodate up to 36″ valve handwheel

TYPICAL CHAINWHEEL SPECIFICATIONS:

Approved chainwheel operators shall be manufactured by Babbitt Steam Specialty Co. and shall include chainwheel and chain guide for ___ inch diameter valve handwheel. Chainwheel shall be made of (cast iron/ductile iron/malleable iron/aluminum/bronze). Rim shall contain as an integral part of the casting a groove into which the chain guide attaches. Chain guides shall be made of (ductile iron/aluminum/bronze). Chainwheels shall be adjustable and detachable, furnished complete with (steel/stainless steel) attachment sets for attachment of chainwheel to valve handwheel. Units shall be coated with (black enamel, galvanized, Teflon, epoxy or ___) to meet manufacturer’s specifications. Operators shall also be furnished with ___ feet of lock-link (hot dipped galvanized/spark-resistant brass/stainless steel) chain. Ductile iron units (shall be/shall not be) Babbitt “Hammer-blow” configuration. Chainwheel operators (shall be/shall not be) Safety Wheel configuration.