Norriseal Flow-Lift 7100 Series User manual

Series 7100 Flow-Lift®
Piston Check Valve
Award-Winning Design:
Feature-packed valve provides solutions
for gas, air or liquid systems
Features
No-slam closing
No special tool required
to change seat
Low pressure drop
High Cv values
Smooth opening
Special trims for abrasive and
corrosive services
Built-in lifting device for piston
removal and inspection
PTFE self-lubricating piston seal
Low maintenance costs
Contents
2 Assemblies
2 Operation &
Installation
4 Special Features
5 Materials
6 Flow Characteristics
7 Specifications
8 How to Order
Engineered
Performance
The Norriseal Series 7100 Piston Check Valve*
is designed for the prevention of backflow in gas, air
or liquid systems. Norriseal’s expertise in the design
of piston balanced control valves has introduced new
concepts to the piston check valve industry.
The piston check valve, with its award-winning
design, has been installed in critical services around
the world.
Working Pressures
ANSI Class 150 thru 2,500
API 5,000 and 10,000
Applications
Air and gas compressor service
Gas or liquid pipe lines
Oil and gas production leases
Pulsating flows
Safety systems
* Received the Special Meritorious Award for
engineering innovation at the 1981 Offshore Technology Conference
in Houston, Texas.

2Assemblies
Valve Assembly
Valve Assembly

3
Operation
Normal. Flow is directed under the valve piston
and lifts it upward. When flow is stopped, the
piston descends, closing the valve to prevent
flow reversal.
Stabilized/non-slam piston. Pulsating flow
through the valve, if unrestricted, would cause the
piston to follow the rapidly cycling line pressure,
resulting in vibration, chattering and possibly
slamming of the piston. The ball check and orifice
plug built into the piston are to prevent this from
happening. (Fig. 1)
As the piston rises, the pressure in the PTFE
sealed cavity above the piston increases, forcing
open the ball check. This reduces the cavity pres-
sure and allows the piston to rise smoothly. As
the pressure and flow decrease, the piston moves
downward. The ball check closes, and descent of
the piston is restricted by fluid flowing through the
orifice plug. This equalizes the pressure in the cav-
ity above and below the piston and gives stability
to the valve.
Installation
Valves 4.00” and smaller may be installed in a
vertical position.
Warning: 6.00” and larger valves should NOT
be installed in a vertical plane. If a vertical plane
is required, please consult factory for special
accessories.
Application
Compressible fluids. Valves come with ball-
check and orifice plug in piston.
Non-compressible fluids. Valves furnished
same as for compressible fluids; however, some
applications where heavy, viscous liquids are
present, the ball check should be removed so
piston can stabilize quicker.
Operation & Installation
Figure 1
BALL
CHECK
ORIFICE
PLUG

4
PTFE Piston Seal Ring
Norriseal’s use of a PTFE spring energized seal
ring adds a new dimension to the piston check
valve. By use of a full circle ring, leakage between
piston and guide/cage is zero. Using a low friction,
self-lubricating material allows the piston to move
freely and quietly without seizing to the seal.
Guide/Cage
This feature by Norriseal provides positive piston
and seat alignment which helps prevent piston
vibration and assures stability for proper flow
control.
Valve Spring
Furnished on all valves. This gives an added safety
feature for shut-off in all pressure ranges.
Seat – Cage Retained Type
Held in position by guide/cage requiring no
special tools for removal and can be easily
removed by hand.
Optional Trim
For applications where a positive seal with a zero
leakage is required, composition seating material
is available. This style piston has the feature of a
metal back-up in case of wash-out of the composi-
tion trim. (Fig. 3)
Abrasive resistant metal trim sets are available for
special applications. Please consult factory. (Fig. 3)
NACE
Optional trim available that meets MR0175 recom-
mended practice. (See Materials of Construction)
Easy Maintenance
Norriseal’s valve piston comes with a built-in lift-
ing device. No special fittings or tools are required
to remove the piston from the valve body.
Special Features
Figure 3
2A
2D
2C
2B
2E
12
20
8
13
9
3
18
7
16
4
17
6
15
12
11
5
10
14
19
Figure 2
Note: Figure 3 shows piston with replaceable
inserted material
Item No Description
1
2
SEAT Valve
PISTON Valve Solid
2A
2B
BUTT Piston Valve
RETAINER Piston Valve
INSERT Piston Valve
SCREW Retainer Piston
O-Ring Insert
3
4
5
6
7
CAGE Piston Valve
GUIDE Piston Valve
SPRING Valve
PLUG Orifice
SEAT Ball Check
8
9
10
11
12
CAGE Ball Check
SPRING Ball Check
BONNET
GASKET Bonnet
GASKET Guide
13
14
15
16
17
GASKET Seat
STUD Bonnet w/Nut
SCREW Lifting
NUT Hex Ring
SEAL Piston Guide
18
19
20
BALL Check
PLUG Pipe
BODY

5
Materials
Items Valve Size
(inches)
Material
Standard NACE MR0175 Optional
Body 1.00 - 12.00 ASTM A216, GR. WCC ASTM A216, GR. WCC
ASTM A351, GR CF8A
ASTM A352, GR. LCC
Bonnet 1.00 - 12.00 ASTM A516, GR 70 or
ASTM A216, GR. WCC
ASTM A516, GR 70 or
ASTM A216, GR. WCC
Valve Piston 1.00 - 4.00 17-4PH SST/H900 316 SST 316 SST
6.00 - 12.00 17-4PH SST/H1150-M
Valve Seat 1.00 - 12.00 17-4PH SST/H1150-M 316 SST 316 SST
Piston Insert
(Optional) 1.00 - 12.00 Glass-Filled PTFE Glass-Filled PTFE Alloy 6
Valve Cage
1.00, 2.00, 3.00, 4.00 17-4PH SST/H1150-M 17-4PH SST/H1150-M 316 SST
1.50 316 SST 316 SST 17-4PH SST/H1150-M
6.00, 8.00 316 SST 316 SST 17-4PH SST/H1150-M
10.00, 12.00 17-4PH SST/H1150-M 17-4PH SST/H1150-M 316 SST
Piston Guide
1.00 17-4PH SST/H1150-M 17-4PH SST/H1150-M 316 SST
1.50 - 8.00 316 SST 316 SST Consult Factory
10.00, 12.00 N/A N/A N/A
Piston Seal
1.00 None None None
1.50 - 8.00 TFE/ELG Ring TFE/ELG Ring Fluor.-K/ELG Ring
10.00, 12.00 C.G Filled Ring
w/Buna-N O-ring
C.G Filled Ring
w/Viton O-ring Consult Factory
Ball Check
Assembly
Seat 1.00 None None None
1.50 - 12.00
316 SST 316 SST
Consult Factory
Cage 316 SST 316 SST
Ball 302 SST 302 SST
Spring Inconel 600 Inconel 600
Valve Spring 1.00, 5.00 Inconel 600 Inconel 600 Consult Factory
2.00 - 12.00 316 SST Inconel 600
Bonnet Studs 1.00 - 12.00 ASTM A193, GR. B7 ASTM A193, GR. B7 Consult Factory
Hex Nuts 1.00 - 12.00 ASTM A194, GR. 2H ASTM A194, GR. 2H Consult Factory
Spiral Wound Gaskets 1.00 - 12.00 316L SST
w/Graphite Filler
Inconel 600
w/Graphite Filler Consult Factory
Solid Metal Gaskets
(ANSI 2500 and up) 1.00 - 12.00 316 SST 316 SST Consult Factory
Composition Gaskets
(Non-ASB)
10.00
(ANSI 150-600)
Synthetic Fiber
w/Nitrile Binder
Synthetic Fiber
w/Nitrile Binder Graphite/Fiberglass
Orifice Plug 1.00 None None None
1.50 - 12.00 316 SST 316 SST Consult Factory
Piston Lifting
Attachment
1.00 None None None
1.50 - 4.00 304 SST 304 SST
316 SST6.00, 8.00 302/304 SST 302/304 SST
10.00, 12.00 304/316 SST 304/316 SST
Nameplate 1.00 - 12.00 316 SST 316 SST Consult Factory
Bonnet Vent Plug 1.00 - 12.00 CSTL/ASTM A105 CSTL/ASTM A105 316 SST
Lifting Attachments
(Eye Bolts)
1.00 - 2.00 None None None
1.00 - 12.00 Forged Alloy Steel Forged Alloy Steel Consult Factory
MATERIALS OF CONSTRUCTION

6Flow Characteristics
Pressure Drop vs Flow for Norriseal Series 7100 Piston Check Valves
DIFFERENTIAL PRESSURE (PSI)
WATER FLOW (GPM) AT 60°F
Note: Dotted potion of curves indicates flow with valve spring removed.
1.00” Valve
1.50” Valve
2.00” Valve
3.00” Valve
4.00” Valve
6.00” Valve
8.00” Valve
10.00” Valve
12.00” Valve
10 20 30 40 50 60 70 80 90
100 200 300 400 500 600 700 800 900
1000 2000 3000 4000 5000 6000 7000 8000 9000
10000 20000
100
90
80
70
60
50
40
30
20
10
9
8
7
6
5
4
3
2
1
Flow (Water – S.G. = 1.0)
vs.
Pressure Drop (psi)
For liquids other
than water multiply
by 1/ S.G.
For barrels per day
multiply gpm by 34.3
The following formulas may be
used to determine the actual
flow coefficient (Cv) required by
a given condition of flow.
1. Liquid
Cv= Q
Q = Cv
2. Gas
Cv=
Q = 963Cv
Glossary of Terms
Q= Flow Liquids – GPM
Gas – SCFH
Cv= Flow Coefficient
P1= Inlet Pressure (PSIA)
P2= Outlet Pressure (PSIA)
P = P1– P2, Pressure Drop
[Critical flow (gas) use
1⁄2P1for P2if P2is less
than 1⁄2P1]
T= Absolute Temperature
(°F + 460)
G= Specific Gravity
Flow Coefficients (Cv)
for Fully Open Valves
Valve Size Cv
1.00 16
1.50 34
2.00 70
3.00 128
4.00 198
6.00 440
8.00 880
10.00 1200
12.00 1900
G
P
G
P
GT
( P) (P
1+ P2)
Q
963
( P) (P
1+ P2)
GT

7
Specications
End Connection Type
Body
Size NPT+Butt-
Weld+
Socket
-weld+
ANSI Flanged
Flange Type 150 300 600 900 1500 2500
1.00 8.25 8.25 8.25 RF 7.25 7.75 8.25 9.38 9.38 N/A
RTJ 7.75 8.25 8.25 9.38 9.38 N/A
1.50 13.00 13.00 13.00 RF 8.75 9.25 9.88 12.25 12.25 N/A
RTJ 9.25 9.75 9.88 12.25 12.25 N/A
2.00 11.25 11.25 11.25 RF 10.00 10.00 11.25 14.75 14.75 16.88
RTJ 10.50 11.12 11.38 14.88 14.88 17.00
3.00 CF CF RF 11.75 12.50 13.25 15.50 18.12 22.75
RTJ 12.25 13.12 13.38 15.62 18.25 23.00
4.00 CF CF RF 13.38 14.50 15.50 17.00 20.88 26.50
RTJ 14.38 15.12 15.62 17.12 21.00 26.88
6.00 CF RF 17.75 18.62 20.00 24.00 27.75 36.00
RTJ 18.25 19.25 20.12 24.12 28.00 36.50
8.00 CF RF 21.38 22.38 24.00 29.00 32.75 40.25
RTJ 21.88 23.00 24.12 29.12 33.12 40.88
10.00 CF RF 24.50 24.50 31.00 33.00 39.12 C/F
RTJ 25.00 25.12 31.12 33.12 39.38 C/F
12.00 CF RF 29.00 30.50 32.25 40.00 44.50 C/F
RTJ 29.38 31.00 32.38 40.12 45.12 C/F
DIMENSIONS (inches)
Valve Size ANSI Class “D” “E”
1.00 150-1500 7.75 3.06
1.50 150-600 9.75 3.50
900-1500 10.50 4.00
2.00 150-1500 12.12 4.38
2500 15.12 5.25
3.00
150-900 13.50 5.50
1500 16.88 6.25
2500 23.12 7.62
4.00
150-900 18.38 7.00
1500 19.38 7.50
2500 23.12 7.62
6.00
150-600 20.75 7.50
900-1500 25.00 8.62
2500 30.00 10.50
8.00
150-600 26.50 9.00
900 27.88 10.38
1500 & 2500 39.00 12.75
10.00
150-600 34.00 11.63
900 36.25 11.94
1500 39.75 13.00
12.00
150-300 37.12 12.00
600 38.50 12.75
900 40.12 13.50
1500 43.59 14.75
BODY HEIGHT DIMENSIONS
Body Size NPT Butt Weld Socket Weld Flanged
(ANSI Ratings)
1.00 * * * 150-1500
1.50 * * * 150-1500
2.00 * * * 150-2500
3.00 * * 150-2500
4.00 * * 150-2500
6.00 * 150-2500
8.00 * 150-2500
10.00 * 150-2500
12.00 * 150-2500
STANDARD BODY END CONNECTIONS**
* For face-to-face dimensions other than those listed above, ie. API 6D, please consult factory
+ ANSI 1500 C.L. Pressure Rating
* For 10.00” and 12.0” ANSI 2500 Class C/F **For valve body end connections other than those listed and higher
pressure ratings, please consult factory.
D
E
F
4
F/2

8How to Order
S - 36RGS - AEA
1. Determine required body size.
2. Use model number code below as
illustrated to select proper valve
type to suit operating conditions.
Please note: not all available
options are shown.
1Limited Availability
2Specify schedule
3NACE MR0175 Suitable
4Consult factory for non-standard F-F applications
5NACE MR0175 Suitable
For specific trim combinations per size, refer to Materials of
Construction chart on page 5.
BODY RATING
BODY CONNECTIONS
SERVICE CODE
BODY CONFIGURATION
VALVE SPRING MATERIAL
ANSI Code
150 02
300 07
400 09
600 14
900 21
1500 36
2500 60
5000 501
10,000 1001
Type Code
Screwed (Female) NPT S
ANSI Flanged Raised Face RF
ANSI Flanged Ring Type Joint RJ
Beveled Buttweld B2
Socketweld W2
API Flanged Ring Type Joint AJ
Body, Bonney Code
WCC Standard (General Serv.) -
WCC NACE Spec. (MR0175) N
316 SST S
Configuration Code
Norriseal F-F (ISA) -
Non-Std. F-F (Not ISA or API) C4
Type Code
316 SST (Horizontal) R
Inconel (Horizontal) L3
316 SST (Vertical) V
Inconel (Vertical) W3
BODY STYLE
GASKETS (SPIRAL WOUND)
FLUID TYPE
PISTON SEAL MATERIAL
TRIM MATERIAL
Code Flow Pattern
DGlobe w/Bottom Drain
(Standard 10” and larger)
GGlobe w/o Bottom Drain
(Standard 8” and smaller)
Code Fluid
S 316 SST/Grafoil
N Inconel 600/Grafoil
Code Fluid
A Gas or Air
B Liquid
Code Material
E PTFE/Elgiloy
F Buna w/TFE Rider (>8.00”)
G Viton w/TFE Rider (>8.00”)
K Fluoroloy K (>8.00”)
J Carbon-Graphite
O No Seal (1.00”)
Code Piston Seat Cage Guide
A 17-4PH 17-4PH 17-4PH 316 SST
B5316 SST 17-4PH 17-4PH 316 SST
C5316 SST 316 SST 316 SST 316 SST
E5316/STEL 316/STEL 316 SST 316 SST
J5316/TFE 17-4PH 17-4PH 17-4PH
L5316/TFE 316 SST 316 SST 316 SST
T 17-4/TFE 17-4PH 17-4PH 316 SST
Z 17-4/UHMW 17-4PH 17-4PH 316 SST
Tel: 713·466·3552
Fax: 713·896·7386
www.norriseal.com
Tel: [phone]
Fax: [phone]
www.albertaoiltool.com
Engineered Performance
©2015 Dover Corporation/Norriseal and its affiliates. This manual, including all text and
images, is a copyrighted work of Dover Corporation/Norriseal and its affiliates. It may
not be, in whole or in part, photocopied, scanned, or otherwise reproduced, revised,
or publicly displayed, without prior written permission from Norriseal. This manual is
for use only with the new Norriseal valves and/or controllers listed in the manual. It
may not be distributed with, and is not for use with, any remanufactured products.
Due to the continuous improvement program at Norriseal, specifications and/or prices are
subject to change without notice or obligation.
All trademarks contained herein are the property of their respective owners.
7100-0615T
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