Outperforms other valves under SEVERE chemical conditions
GRINNELLSAUNDEKS DIAPHRAGM VALVES Backing Cushion
1
with TEFLON D i a p h r a g m s . . . Grinnell Teflon Diaphragms are made by a special process which produces a better product of greater density, tough ness and flex life. The four case histories cited below demonstrate that Teflon offers a very high degree of chemical inertness to some of the most difficult chemicals which industry today must handle. Yet these are only a few of many success stories in the Grinnell files. Diaphragm life depends on temperature, pressure and frequency of operation. Inquiries must include complete service data to receive prompt and careful attention.
Service Conditions ! • „ „ 1. Benzene hexachloride ( 3 0 % - 4 0 % . benzene, free chlorine)! 120 to 130 F 10 to 20 p s j j operated 3 t o * times daily Case 2.
Ο
Service l i f e Previous Teflon Valve Diaphragm
Saunders Valve Now Used Glass lined bodies; Teflon Diaphragm; 1 to 3 inches
0%·95%
operated 2 to 3 times daily Case 3. AI CI +2 cornplex; ambient to 220 F, 0-50 psi; operated 1 to 2 times daily C a s e 4. Sulphuric acid 8 5 % ; outside tempera ture; no pressure; operated 4 times daily
Durimet 20 body; Teflon Diaphragm; 1 to 3 inches
10 to 14 mos.
9 months
Still in service after 1 year
Iron bodies; Teflon Diaphragms; 21/2 inches
1 to 2 mos.
CLOSED
•
Diaphragm lifts high for streamline either direction.
•
Body, linings and diaphragm materials to suit service conditions.
•
Resilient diaphragm assures positive, leak-tight closure even w i t h grit or scale in the line.
•
Diaphragm absolutely isolates w o r k i n g parts from fluid . , . sticking, clogging, contamina t i o n , corrosion eliminated.
•
Simple maintenance. Diaphragm can be re placed easily without removing valve from the line. No packing glands to demand attention. No metal-to-metal seats to become damaged or w i r e - d r a w n .
2 months
8 months
Glass lined bodies; Teflon Diophragms; 1 to Ί inches
OPEN
Features of Grinnell-Saunders Diaphragm Valves
6 months
flow
in
3 weeks
GRINNELL WHENEVER PIPING IS INVOLVED
Grinnell Company, Inc., Providence, Rhode Island pipe and tube fittings
·
welding fittings
Grinnell-Saunders diaphragm valves industrial supplies
80 A
·
·
pipe
· ·
Coast-to-Coast Network of Branch Warehouses and Distributors engineered pipe hangers and supports prefabricated piping
·
Grinnell automatic sprinkler fire protection systems
INDUSTRIAL AND ENGINEERING CHEMISTRY
·
Thermolier unit heaters
plumbing and heating specialties *
·
·
valves
water works supplies
Amco air conditioning systems
