Rubber Seated
Butterfly Valve
Series 100/200
S200-0504
401 S. Highland Avenue
Aurora, IL 60506
Phone: 877-436-7977
Fax: 630-844-4124
www.henrypratt.com
Construction Specifications:
Sizes:
2" through 48"
Body:
Cast Iron -- Wafer or Lug*
Disc:
Ductile Iron
Epoxy Coated Stainless Steel
Aluminum Bronze
Stem:
Stainless Steel
Resilient Seat:
EPDM
BUNA-N
Viton
Actuation Options:
Worm Gear
Lever
Pneumatic Electric
Pressure Ratings:
2"-12" -- 175 psi
14" and larger -- 150 psi
*for installation between ANSI Class 125 flanges
Features:
s
All cast body machined to high tolerances. Guaranteed
standard dimensions for interchangeability of parts and
actuators.
s
Shaft bushings are impact and corrosion resistant
materials. Protects the shaft from side thrust of actuators.
s
Special double-V-shape of stem seal self-adjusts to protect
the stem area for either vacuum or pressure use.
s
Stem and body are isolated from line media by seal
created between disc flats and flat surface of seat.
s
The special snap-in Resil-O-Seat design fixes seat in
place without bonding. The Resil-O-Seat is 100% field
replaceable -- no tools required.
s
Molded O-ring in the Resil-O-Seat forms a seal against all
standard flanges. Gasketing requirements are eliminated.
s
Disc edge is machined and buffed, providing a bubble tight
shutoff and maximum seat life.
s
All valves are factory tested at their rated pressure.
Note: Valves cannot be used on a pipe or flange with an inside diameter less than the "E" dimension.
FIGURE 101
SECTION
FIGURE 102
2"-12"
14"-20"
FIGURE 201
SECTION
FIGURE 202
General Service Rubber Seated Butterfly Valve Specifications
General
Valves shall be of the wafer (or lug wafer) design for
installation between ANSI B16.1 125# flanges. All
valves shall be capable of bi-directional, bubble tight
service to the rated pressure. Valves shall be Pratt
Series 100/200 or approved equal.
Pressure rating
2" through 12" 200 psi
14" and larger 150 psi
Body
The valve body shall be cast iron ASTM A-126 Class
B. Laying length shall conform to MSS-SP67, latest
revision.
Disc
Valve disc shall be epoxy coated ductile iron
ASTM A-536 Grade 65-45-12 (or 316 stainless steel).
Shaft
Valve shaft shall be stainless steel type 416 or 17-4.
Seat
Seat shall be EPDM (or Buna-n or Viton). Seats shall
be located in the valve body and shall be field
replaceable.
Shaft Seal
Shaft seal shall be self adjusting V-type and shall be
suitable for pressure or vacuum service.
Testing
All valve shall be leak tested in the factory at their
rated pressure.
Valve Dimensions
Size
A
B
C
D
E
F
G
H
2"
2-1/8
4-1/8
5-1/2
1-5/8
1-11/16
4
1-1/4
9/16
2.5"
2-9/16
4-7/8
6
1-3/4
2-3/16
4
1-1/4
9/16
3"
3-1/8
5-3/8
6-1/4
1-3/4
2-7/8
4
1-1/4
9/16
4"
4-1/8
6-7/8
7
2
3-7/8
4
1-1/4
5/8
5"
5-3/16
7-5/8
7-1/2
2-1/8
5
4
1-1/4
5/8
6"
6-1/8
8-3/4
8
2-1/8
6
4
1-1/4
5/8
8"
8-1/8
11
9-1/2
2-1/2
8
6
1-1/4
3/4
10"
10-1/8
13-3/8
10-3/4
2-1/2
10-1/16
6
1-1/4
7/8
12"
12-3/32
16-1/8
12-1/4
3
11-15/16
6
2
1-1/8
14"
13-1/4
17-9/16
12
3
13-1/8
6
2-1/4
1-3/8
16"
15-1/4
20-1/8
12-61/64
4
15
6
2-1/4
1-5/8
18"
17-1/4
21-1/2
14-1/2
4-1/4
16-7/8
8
3
1-7/8
20"
19-1/4
23-3/4
15-7/8
5
18-3/4
8
3
2-1/8
24" and larger -- consult factory
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