© PROCO PRODUCTS, INC. Rev. 00 1/06
Notes: Hypalon
®
and
Viton
®
are registered trademarks of DuPont Dow Elastomers.
ProFlex
™
is a trademark of PROCO Products, Inc.
All products are reinforced with polyester tire cord.
1. Check Valve "cover" can be coated with Hypalon
®
on special order.
2. Styles with Neoprene covers meet all requirements of U.S.C.G.
3. NSF61 approved material available upon request.
ProFlex
™
in-line rubber check valves
720/740
STYLES
The PROCO Series 700
ProFlex
In-Line Rubber Check Valve is a cost
effective way to control back pressures from sewage treatment plants,
outfalls and tidal operations. They are a fully passive flow device
requiring neither maintenance, outside sources of power or manual
assistance to operate.
The PROCO Series 700
ProFlex
In-Line Rubber Check Valves are of-
fered as direct replacements for ineffective and maintenance-ridden
check valves, which are commonly known to seize, rust and bind in
unwanted positions. Unlike flap type valves, the
ProFlex
In-Line Rub-
ber Check Valves will handle large obstructions without jamming or
having gates binding open. Specify the PROCO Series 700
ProFlex
In-Line Rubber Check Valves to provide backflow protection and pro-
tect pumps from: (1) Sewage slurries, (2) Outfalls to ocean fronts
from heavy rainfall activity. Our history in the manufacture of rubber
piping products dates back to 1930. When an engineered solution is
needed to solve a piping or backflow problem, call PROCO.
With current global awareness for clean water and the urgency to have all
water treatment plants operating under stricter standards, the PROCO
Series 700
ProFlex
In-Line Rubber Check Valves will also be available in
NSF61 approved Nitrile for all potable water and sewage applications.
This will include water treatment plants, direct installation on potable wa-
ter pump systems and other piping systems directly related to the potable
water industry.
The PROCO Series 700
ProFlex
In-Line Rubber Check Valves are avail-
able in a Flanged Type (Style 720), or a Slip-In Type (Style 740).
• Style 720 — Flanged Type:
Designed to bolt directly between two
existing pipe flanges. Flanges are drilled 150# standard. Other drilling
standards such as: ANSI 250/300#, British Standard BS-10, JIS, and
DIN as well as square flanges are also available upon request. The
Style 720 can be installed in either a vertical or horizontal application.
• Style 740 — Slip-In Type:
Designed to easily slip into an existing pipe
and affixed with a heavy-duty Stainless Steel expandable clamp. The
Style 740 can be installed in either a vertical or horizontal application.
Elastomers:
All of the PROCO Series 700
ProFlex
In-Line Rubber Check
Valves are available in a various selection of elastomers (see Table 1
below) and back pressure capabilities to suit most applications.
The PROCO Series 700
ProFlex
In-Line Rubber Check Valves will not
freeze or deform and function solely on inlet and back pressures which
will be present in most applications.
Each valve is carefully constructed using the finest of engineered mate-
rials and built by the most experienced rubber technicians in the indus-
try. All check valves are engineered in precise detail to ensure proper
operation and will provide years of unhindered operation and trouble-
free service.
Benefits of the PROCO Series 700
ProFlex
In-Line Rubber Check Valves:
• All rubber construction resists abrasive slurries
• NSF61 approved materials
• Very quiet operation with no water hammer
• Unique design prevents backflow
• Negligible maintenance and energy costs
• Will not warp or freeze
• Quick interchange with any type of check valve
• Available in sizes 1" to 72"
• Available to suit all type IDs
For your complete project requirement PROCO also maintains the largest
inventory of expansion joints in the world. Rubber, PTFE Lined, Plastic or
Metal Hose — PROCO can ship the products you need when you need
them! In fact, when it comes to expansion joints,
if PROCO doesn’t have
them in stock ... nobody does!
Information • Ordering • Pricing • Delivery.
Day or night, weekends and
holidays ... the PROCO phones are monitored 24 hours around the clock.
When you have a question, you can call us.
Toll-Free Phone . . . . 800 / 344-3246 USA/CANADA
International Calls . . 209 / 943-6088
Fax . . . . . . . . . . . . . . 209 / 943-0242
Email . . . . . . . . . . . . . sales@procoproducts.com
Website . . . . . . . . . . . www.procoproducts.com
Weekday office hours are 5:30 a.m. to 5:15 p.m. Pacific Time.
Table 1: Available Materials • Temperatures
PROCO
Material
Codes
For Specific Elastomer
Recommendations, See:
PROCO
™
“Chemical To Elastomer Guide”
Cover
1, 2
Elastomer
Maximum
Operating
Temp.
°
F (
°
C)
Branding
Label
Color
F.S.A.
Material
Class
Tube
Elastomer
BB
Chlorobutyl
Chlorobutyl
250
°
(121
°
)
Black
STD. III
EE
EPDM
EPDM 250
°
(121
°
)
Red
STD. III
NH
Neoprene
Hypalon
®
212
°
(100
°
)
Green STD. II
NN
Neoprene
Neoprene 225
°
(107
°
)
Blue
STD. II
PP
Nitrile
Nitrile
3
225
°
(107
°
)
Yellow STD. II
NR
Neoprene Natural Rubber 180
°
(68
°
)
White
STD. I
NV
Neoprene
Viton
®
225
°
(107
°
)
Orange STD. III