Section No. 3.8
Series
9311
Series 9311 Pneumatic & Electric Liquid Level Switch Application The WellMark Series 9311 is a Pneumatic Snap Acting or Electric Hi/Lo Level Switch. This switch combines the user-friendly features of our Model 2001NB with the rugged external cage of the Model 9321. Together these attributes make the 9311 a robust, reliable Level Switch for the control of liquid level in oil and gas production equipment such as Gas Compressor Scrubbers, Separators, Safety Systems, etc.
Features • Pneumatic or Electric • Weather Proof Case • Left or Right Hand Mount • Direct or Reverse Acting • 304 and 316 Stainless Steel Internals • NACE Process, Standard • Electric Option Available (Consult Factory)
Materials
Specifications Process Connection . . . . . . . . . . . . . . . . . . . . Screwed 1" NPT Butt Weld 2.00", Socket Weld 1.00", Flanged (Consult Factory) Temperature Rating . . . . . . . . . . . . . . . . . . . . . . . -20˚F-400˚F Max. Working Pressure . . . . . . . . . . . . . . . . . . . . . . . 2500 psi Pilot Action . . . . . . . . . . . . . . . . . . . Pneumatic-Snap (On/Off) Minimum Air Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 psi Minimum Specific Gravity . . . . . . . . . . . . . . . . . Pneumatic-0.5 Supply & Output Connection Size . . . . . . . . Pneumatic-1/4" NPT Electric-1/2" NPT
Level Control Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . Die Cast Aluminum Pilot . . . . . . . . . . . . . . . . . . . . . . Aluminum w/S.S. Internals Gauges . . . . . . . . . . . . . . . . . . . . . . . . Brass (S.S. Optional) Cage/Body Assembly Cage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cast Steel Body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1018 Steel Displacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S.S. Displacer Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304 S.S. Seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Viton® 15.25
Dimensional Data
7.88 1.69 (TYP.)
1.00
4.88
SUPPLY AND OUTPUT CONNECTION 1/4" NPT
8.50 R
1/8 NPT EXHAUST
CONNECTION
The
1" NPT (TYP.)
1.50
3.25
8.25
2.75
SUPPLY OUTPUT 11.25
0R 6.5
8.25
1.50
3.00
17.50 10.00
R
Company, L.L.C. • Oklahoma City, Oklahoma • Tel: (405) 672-6660 • Fax: (405) 672-6661 • wellmarkco.com
©2009 The WellMark Company, L.L.C. • Litho USA • WM9311-5/09 • All registered trademarks are the property of their respective owners.
21
Section No. 3.8
9311
Series Series 9311 Pneumatic & Electric Liquid Level Switch 31
Determining the Model Number
32
Example given: Standard Model 9311-SLD, Snap Acting, Left Hand Mounting, Direct Control Level Switch.
44
MODEL 9311- S L D
41
Control Action D • Direct R • Indirect
Series 9311 11
30
12
33 23 26 27 25 36
Pilot S • Snap T • Throttling
35 24 15
1
Mounting R • Right Hand L • Left Hand
34
3 39
4
10
2
7 37 38
42 6
23
8 43 9 28 22 21 19 29
20
5
28 16 17 13 40 18 14
Parts List Item 1 2 *3
Description CONTROL BOX, DIE CAST ALUMINUM COVER, DIE CAST ALUMINUM BOX SEAL, NEOPRENE SNAP PILOT ASSEMBLY *4 THROTTLE PILOT ASSEMBLY 5 BODY, ASTM A-108GR. 1018 6 PIVOT SHAFT, ASTM A-276 TY.316 *7 O-RING, VITON ® *8 BACK UP RING, TEFLON ® 9 SHAFT RETAINER, ASTM A-276 TY.316 *10 O-RING, VITON ® 11 SPACER, ASTM A-276 TY. 316 12 CAP SCREW, 18-8 S.S. 13 CAP SCREW, 18-8 S.S. 14 ADJUSTING BAR, ALUMINUM 15 CAP SCREW, 18-8 S.S. 16 TORQUE BAR, ALUMINUM 17 ADJUSTING SCREW, ASTM A-276 TY.316 18 JAM NUT, 18-8 S.S. 19 STUD, 18-8 S.S. 20 LOWER SPRING GUIDE, ALUMINUM 21 SPRING, ASTM A-313 22 UPPER SPRING GUIDE, ALUMINUM 23 STUD, FLAPPER BAR, ASTM A-276 TY.316 24 FLAPPER BAR *Recommended Spare Part
The 22
Qty. 1 1 1 1 1 1 1 2 2 2 2 1 2 1 1 2 1 1 1 1 1 1 1 2 1
Part No. 05012-4841 05012-4834 06000-5097 06500-5304 06500-5387 05013-1458 05013-1482 05000-0769 06000-1179 05012-9398 05000-1155 05011-4495 05000-5578 05000-5453 05011-4438 05000-2526 05011-4545 05011-4537 05000-2559 05011-4552 05011-4529 06000-4157 05011-4479 05012-9371 05011-4404
Item 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 *40 *41 42 43 44 45 46 47 48
Description TRU-ARC RING, PH 15-7 MO FULCRUM, ALUMINUM THUMB SCREW, S.S./PLASTIC NY-LOC NUT, STAINLESS STEEL ACORN NUT, STAINLESS STEEL CHAMBER W/FLOAT ARM LOCK WASHER CAP SCREW HINGE PIN, STEEL PLATED GASKET CAP SCREW PILOT CLAMP PANEL SCREW, STAINLESS STEEL PANEL SCREW RETAINER, STAINLESS STEEL SERIAL TAG, ALUMINUM THREAD SEAL, STEEL/BUNA N GASKET BEARING, STAINLESS STEEL TOLERANCE RING, STAINLESS STEEL PLUG COVER GLASS, LEXAN (NOT SHOWN) COVER GLASS PLATE, S.S. (NOT SHOWN) COVER GLASS GASKET, NEOPRENE (NOT SHOWN) COVER SCREW, PLATED STEEL (NOT SHOWN)
Qty. 1 1 1 2 1 1 1 1 2 1 4 1 1 1 1 1 1 2 2 1 2 2 2 8
Part No. 06000-1385 05011-4412 06500-5429 05000-2567 05000-2575 40299 10709 10002 06000-7537 06000-4819 05000-5313 05012-6325 06000-1153 06000-2672 06000-1922 06000-0395 10016 06000-7552 06000-7560 06000-1146 10916 10915 10917 001501-P
Company, L.L.C. • Oklahoma City, Oklahoma • Tel: (405) 672-6660 • Fax: (405) 672-6661 • wellmarkco.com ©2009 The WellMark Company, L.L.C. • Litho USA • WM9311-5/09 • All registered trademarks are the property of their respective owners.