Sensus 243-12-1 User manual

RM-1306-1 Rev. 11
Regulator Installation and
Maintenance Instructions
243 Service
Regulators
Introduction
The 243 is a large capacity general-purpose gas pressure
regulator.
Its outstanding performance and versatility make it an excellent
choice for use on industrial meter sets, combustion equipment,
boilers, burners, unit heaters, furnaces, ovens and other appli-
cations.
Use it for natural gas, air, dry CO2,propane, butane, L.P.G.,
nitrogen, and others. Special materials are available for cer-
tain corrosive gases.
In addition to the standard models and internal relief models
covered in this bulletin, the 243 is also available with low pres-
sure cut-off, with built-in monitor, and as a pilot operated regu-
lator (outlet pressures to 35 psig), a back pressure valve, a
relief valve, a vacuum regulator and a vacuum breaker. For
information, please contact your Sensus Sales Office or
authorized industrial distributor. The 243 is manufactured in
conformance with Code B31.8.
Note: The term standard refers to Non-IRVconfigurations.
Model Specifications
243-12-1 and 243-12-2
Maximum Inlet Pressure.........................................125 psi
Outlet Pressures......................................3 1⁄2”w.c. to 3 psi
Pipe Sizes................................................ 1 1⁄4”, 1 1⁄2”and 2”
Diaphragm..................................... 12” (nominal diameter)
243-8-1 and 243-8-2
Maximum Inlet Pressure.........................................125 psi
Outlet Pressures..................................3 1⁄2” w.c. to 4 1⁄4”psi
Pipe Sizes................................................ 1 1⁄4”, 1 1⁄2”and 2”
Diaphragm....................................... 8” (nominal diameter)
243-8HP
Maximum Inlet Pressure.........................................125 psi
Outlet Pressures................................................3 to 10 psi
Pipe Sizes................................................ 1 1⁄4”, 1 1⁄2”and 2”
Diaphragm....................................... 8” (nominal diameter)
Maximum Inlet Pressures
*Applies only to 243-12 with external control line.
t
80 psi for 243-12 with external control line
Temperature Limits
The Model 243 Service Regulators can be used for flowing
temperatures from -20 F to 150 F.
Buried Service
The Model 243 Service Regulators are not recommended for
buried service.
Installation and Start Up
(See Illustrations on Page 3.)
1. Make certain that regulator and piping are free of dirt,
moisture, foreign matter and other debris.
2. Be sure all shipping screens or covers are removed and
regulator is installed with flow in correct direction.
3. Regulator may be installed in any position; right-side-up, up-
side down, vertical pipe, horizontal pipe, diagonal pipe, etc.
By loosening union bolts (16),the diaphragm case assembly
may be rotated to various positions in relation to the body.
Make certain (16) are re-tightened to hold diaphragm case
assembly in new position and to reseal.
CAUTION
The diaphragm case vent must be positioned
to protect against flooding, drain water, ice
formation, traffic, tampering, etc. The vent
must be protected against nest building
animals, bees, insects, etc. to prevent vent
blockage and minimize the chances for
foreign material from collecting in the vent
side of the regulator diaphragm.
4. Make sure there are no leaks and all connections are firm
and tight. Tighten flange bolts evenly and firmly.On screwed
connections apply pipe dope to male threads only.
5. On regulators arranged for External Control Line, run pipe
or tubing from 1⁄2”NPT connection in lower case to the con-
trol connection in the outlet piping. This control piping
should not be less than 1⁄2”in size and should be adequately
protected against breakage (regulators go wide open if the
control line is broken). In general, the control connection
should be at least 8 pipe diameters from the regulator and in
as straight a run of pipe as possible. The connection itself
must be smooth on the inside of the pipe. Pitch the control
line away from the regulator and avoid moisture pockets.
Keep inside of control line clean. Never install any type of
automatic shut-off device, which closes completely, between
the regulator outlet and the control line connection.
CAUTION
It is the user’s responsibility to assure that all
regulator vents and/or vent lines exhaust to a
non-hazardous location awayfrom any potential
sources of ignition. Where vent line are
used, it is the user’sresponsibility to assure
that eachservice regulator is individuallyvented
and that common vent lines arenot used.
6. Adjust outlet pressure (set point) by removing cap (1) or
(1e) and turning adjustment spring button (3).On 243-8 HP
remove cap (1a),loosen locknut and turn adjustment screw
(1b).Turn clockwise to increase and counter-clockwise to
decrease outlet pressure. Only adjust when gas is flowing
through regulator. When adjustment is completed, seal cap
(1) or (1e) must be securely screwed into place. The
absence of this seal cap can result in unstable operation.
243-12
15 psi
25 psi
25 psi
40 psi
40 psi
60 psi
100 psi
125 psi
125 psi
•••
243-8
•••
•••
25 psi
25 psi
40 psi
40 psi
80 psi
100 psi
125 psi
125 psi
11⁄4”-30
11⁄4”-10
1” - 30
1” - 10
3⁄4”-30
3⁄4”-10
1⁄2” - 10
3⁄8”-10
1⁄4”-10
.207” - 10
t
ORIFICE SIZE - VALVE
O
O
O
O
O
O
O
O
O
O
OO
*
*

Installation and Start Up (Continued)
7.On regulators with Internal Relief Valve, there is no
adjustment for the internal relief. It is fixed, with relief begin-
ning at approximately 9” w.c. to 20” w.c., above regulator set
point, depending on relief spring (11k) used.
Internal Relief Valves must be carefully sized. For informa-
tion, contact your Sensus Representative.
6. Regulators installed indoors must be vented outside. Run
vent pipe from regulator vent connection to safe place out-
side. Vent piping should be as short and direct as possible.
Vent piping for regulators with internal relief valve (Models
243-12-2 or 243-8-2) must be large enough to vent all relief
valve discharge to atmosphere without excessive back pres-
sure and resulting excessive pressure in regulator.
Vent pipe outlet must be protected against nest building ani-
mals, bees, insects, etc., and positioned to protect against
flooding, drain water,ice formation, etc. but must allow free
and unobstructed passage of air or gas.
CAUTION
Turn gas on very slowly. If an outlet stop valve is used, it should be opened first.
Do not overload the diaphragm with a sudden surgeof inlet pressure. Monitor
the outlet pressure during start-up to prevent an outlet pressure overload.
Servicing
1. Make sure the regulator is entirely depressured before
disassembling.
2. Carefully note location and position of all disassembled
parts to be certain reassembly is correct. Inspect each part
and replace those that are worn or damaged or otherwise
unsatisfactory.
3. For access to valve (21) and orifice (24) loosen union
bolts (16) and remove diaphragm case assembly from body.
Toremove valve (21),first remove hair pin cotter (20b).
Orifice (24) unscrews from body. Use 1-5/8” hex socket
“thinwall” type. When replacing orifice use moderate
amount of pipe dope on orifice threads.
4. Before reassembling and tightening union bolts (16),
make certain Tetraseal (17) is in position.
5. To replace diaphragm; remove spring (4),remove flange
bolts (8) and nuts (9),and disassemble diaphragm assem-
bly. Remove old diaphragm (11a) from diaphragm pan
(11b).Remove old adhesive from the diaphragm pan using
asolvent such as methyl ethyl ketone (MEK).
To reassemble, apply a thin, even layer of a rubber based
adhesive such as 3M Industrial Adhesive #EC-847 to the
cleaned, prepared side of the diaphragm pan.
Attach the diaphragm to the adhesive side of the diaphragm
pan, being careful to align the center hole of the diaphragm
with the corresponsing center hole in the diaphragm pan.
Make certain all parts are reassembled in their correct order
and bolts (8) are tightened to a torque of 150 in-lbs. Bolts
must be tight enough to prevent leakage but not too tight
that the diaphragm material is crushed or damaged.
Diaphragm must not be twisted or pinched.
6. Upon completion of servicing, make certain that regulator
installation is entirely free of leaks.
CAUTION
Regulatorsare pressure control devices with numerous moving parts subject to
wear that is dependent upon particular operating conditions. To assure continuous
satisfactoryoperation, aperiodic inspection schedule must be adhered to with
the frequency of inspection determined by the severity of service and applicable
laws and regulations.
Condensed Parts List
The following are the parts generally required in mainte-
nance and servicing. For a listing of all parts refer to Parts
List RP-1306
ILL. Part
No. Description Number
1
1e
1d
2
2a
3
4
5
8
9
10
11a
11b
11d
11e
11f
11k
11k
11s
13
16
17
18
20b
21
24
25
26
27
28
Cover Cap (IRV)
Cover Cap (STD)
Tetraseal 1 1⁄2x 1 5⁄8”
O-Ring #2-140
O-Ring #2-142
Adjustment Spring Button
Spring (See Table, 1st page)
243-12 Cover Assembly IRV (includes
vent valve and spring)
243-12 Cover Assembly STD (includes
vent valve and spring)
243-8 Cover Assembly (includes vent
valve and spring)
Flange Bolt, 5⁄16 x1” Hex Hd
Flange Nut, 5⁄16 -18 Hex S.F.
243-12 Lower Case
243-12 Lower Case (tapped for exter-
nal control line)
243-08 Lower Case
243-08 Lower Case (tapped for exter-
nal control line)
243-12 Diaphragm
243-8 Diaphragm
243-8 HP Diaphragm
243-12 Diaphragm Pan
243-8 Diaphragm Pan
243-8 HP Diaphragm Pan
Seal Washer
Emery Cloth Washer (faces against
top side of 243-8 HP diaphragm)
Spring guide
Spring guide (243-8 HP)
Internal Relief Valve Spring,
for 243-8-2 only.
(relief begins at approx. 9” w.c.
above regulator set point)
Internal Relief Valve Spring
(relief begins at approx. 9”w.c.
for 243-12-2, and approx.
20” w.c. for 243-8-2
above regulator set point)
243-8 HP Diaphragm Plate
243-12 Coupling-Lever-
Stem Assembly
243-8 Coupling-Lever-
Stem Assembly
243-8 (HP) Coupling-Lever-
Stem Assembly
Union Bolts, 3⁄16”x11⁄4”Hex
Tetraseal (or O-Ring) 2 1⁄4x 2 1⁄2”
243-8 Throat Block with O-Ring Seal
243-12 Throat Block with O-Ring Seal
Hair Pin Cotter
Valve Assembly - 10 - Buna N
Valve Assembly - 10 - Viton
Valve Assembly - 30 - Buna N
Valve Assembly - 30 - Viton
11⁄4”Orifice, Brass
1” Orifice, Brass
3⁄4”Orifice, Brass
1⁄2”Orifice, Brass
3⁄8”Orifice, Brass
1⁄4”Orifice, Brass
.207” Orifice, Brass
Travel Stop Stem
Warning Tag-Travel Stop
Warning Tag-Body Interchangeability
Clamping Plate
143-16-005-00
143-16-005-08
906534
951357
951376
143-16-009-00
143-16-503-03
143-16-503-19
143-82-503-04
910030
921002
143-16-002-00
143-16-002-01
143-82-002-00
143-82-002-01
143-16-150-00
143-82-150-00
121-10-150-50
143-16-017-00
143-82-017-00
121-10-017-50
143-16-115-00
143-82-178-00
143-16-018-00
121-10-022-53
143-82-021-03
143-16-021-02
121-10-022-52
143-16-530-00
143-82-530-00
143-82-530-02
910056
904075
143-16-508-00
143-16-508-04
143-62-118-00
143-16-511-09
143-16-511-11
143-16-511-10
143-16-511-12
143-16-023-03
143-16-023-02
143-16-023-01
143-16-023-00
143-16-023-04
143-16-023-10
143-16-023-11
143-16-060-02
143-16-136-05
143-16-136-06
143-16-102-01
Denotes recommended spare parts
2
o
o
o
o

Model 243 Regulator
Illustrations
243-12-2
I.R.V. Regulator
-as shown -
243-12-1
Same as I.R.V. Regulator
except no Internal Relief
Valve and Standard Cover
Cap as shown in inset.
PIPE SIZES
2” Flanged ANSI 125 lb FF
11⁄2”and 2” Screwed
243-8 HP
Remainder of regulator
same as 243-8-1
PIPE SIZES
2” Flanged ANSI 125 lb FF
11⁄4”, 1 1⁄2”and 2” screwed
243-8-1
Standard Regulator
-as shown -
243-8-2
Same as Standard
Regulator except
Internal Relief Valve as
shown in inset.
PIPE SIZES
2” Flanged ANSI 125 lb FF
11⁄4”, 1 1⁄2”and 2” screwed
Drilled and Tapped 1⁄2”NPT
on regulators arranged for
External Control Line
STANDARD
DIAPHRAGM
ASSEMBLY
INTERNAL
RELIEF
VALVE
Drilled and Tapped
1⁄2”NPT on regulators
arranged for External
Control Line
THROAT BLOCK
WITH O-RING SEAL
(for regulators arranged
for External Line Control)
1
2
3
4
5
8
9
10 11d 1
1f 13
11k
1
1b 1
1a 162 0b 2124
1e
2a
25
27
2625
11d
1
1a
11d 13
2817
18
10
19
21
11k
11a
1
1d
5
13
1
2
3
4
5
8
9
10
11b 1
1a 16 2 0b21 24
28 17
11d 11f 13
2
4
5
1
1e
13
10
1
1f
11b
11a
1
1s
1d
1515⁄16”
Vent
1” NPT
103⁄16” Dia.
93⁄4”
819⁄32”
7” or 10”
7” or 10”
93⁄4” (IRV COVER CAP)
10” (STD COVER CAP)
14” Dia.
1013⁄32”
Vent
1” NPT
STANDARD
CAP
3
5⁄8”
5⁄8”

Maximum Emergency Pressures
The maximum pressure the regulator inlet may be subjected
to under abnormal conditions without causing damage to the
regulator is the maximum inlet pressure (from the table
below) plus 50 psi.
The maximum pressure the diaphragm may be subjected to
without causing damage to the internal parts of the regula-
tor is:
243-12-1..................................................set-point+3 psi
243-12-2, 243-8-1 and 243-8-2...............set-point+5 psi
243-8HP...................................................set-point+5 psi
Set point is defined as the outlet pressure a regulator is
adjusted to deliver.
If any of the above pressure limits are exceeded, the regulator
must be taken out of service and inspected. Damaged or oth-
erwise unsatisfactory parts must be repaired or replaced.
The maximum pressure that can be safely contained by the
diaphragm case is:
243-12-1 and 243-12-2...............................................15 psi
243-8-1 and 243-8-2.................................................. 45 psi
243-8HP.......................................................................45 psi
Safely contained means no leakage as well as no bursting.
Before using any of the above data, make sure this entire sec-
tion is clearly understood.
Note:The use of an internal or external relief valve is rec
ommended for installations subjected to no flow
for extended periods of time such as pilotless
ignition systems. Atravel stop stem is located in
the 243-12-1 and 243-12-4 to provide over pres
surization protection to internal components dur
ing overpressurization.
Spring Ranges
Monitoring
The Model 243 Regulators make excellent monitors. They can
act as standby regulators installed in series which assumes
control if a failure in the operating regulator permits the outlet
pressure to exceed the set-point. It can be located in either the
upstream or the downstream position.
When a Model 243 Regulator is used to monitor a regulator
with an identical inner valve (another 243 Regulator), the total
maximum capacity through both regulators can be figured at
70% of the capacity of one regulator alone. This applies with
the monitor located either up or downstream.
SPRING
COLOR
Red
Red-Black
Blue
Blue-Black
Green-Black
Green
Orange-Black
Orange
Black
Cadmium
Cadmium
Cadmium
White t
PART
NUMBER
143-16-021-03
143-82-021-00
143-16-021-04
143-82-021-01
143-82-021-02
143-16-021-05
143-16-021-11
143-16-021-06
143-16-021-07
143-16-021-08
143-16-021-08
143-16-021-08
143-16-021-13
243-12
31/2” to 6 1/2” w.c.
•••
5” to 8 1/2” w.c.
•••
•••
6” to 14” w.c.
10” to 18” w.c.
12” to 28” w.c.
1to 2 psi
11/2 to 3 psi
11/2 to 3 psi
•••
•••
243-8
•••
31/2” to 6 1/2” w.c.
•••
5” to 8 1/2” w.c.
6” to 14” w.c.
12” to 28” w.c.
•••
1to 2 psi
2to 4 1/4 psi
3to 5 psi•
3to 6 1/2 psi*
6to 10 psi*
}
tWhite is nested inside Cadmium *243-8 HP only
•243-8-2 (IRV) only
Full Open Capacity
Use the following formulae for the full open capacity for 243
regulators.
Q=maximum capacity of the regulator (in SCFH of
0.6 specific gravity natural gas.)
K = the “K” factor, the regulator constant
(from the table)
PI=absolute inlet pressure (psia)
Po=absolute outlet pressure (psia)
Other Gases
243 Regulators are mainly used on natural gas. However,
they perform equally well on LP gas, nitrogen, dry CO2air
and others.
For capacities, multiply the table values on pages 8 thru 19
in Bulletin R-1306 by the following correction factors:
OTHER GASES CORRECTION FACTOR
Air (Specific Gravity 1.0) 0.77
Propane (Specific Gravity 1.53) 0.63
1350 BTU Propane-Air Mix (1.20) 0.71
Nitrogen (Specific Gravity 0.97) 0.79
Dry Carbon Dioxide
(Specific Gravity 1.52) 0.63
For other noncorrosive gases:
CORRECTION FACTOR
While used primarily for natural gas services, Model 243
regulators perform equally well on LPG vapor, air, dry CO2
nitrogen and other inert gas applications. Please contact
your Sensus representative for special construction which
may be available for certain corrosive gases.
Note: The term standard refers to Non-IRV configurations.
0.6
Specific Gravity
of the Gas
1. Q = K Po(PI-Po)..............(for less than 1.894)
2. Q = ....................(for greater than 1.894)
PI
Po
PI
Po
KPI
2
Orifice Size-in.
K
.207”
90
1⁄4”
132
3⁄8”
292
1⁄2”
520
3⁄4”
1100
1”
1800
11⁄4”
2480
4
OUTLET PRESSURE RANGE

CONDENSED CAPACITY TABLE IN SCFH OF NATURAL GAS (O.6 Specific Gravity-14.65 psia-60 F.)
o
2”
243-12
11⁄2”
243-12
11⁄2”and 2”
243-12
with External
Control Line
2” size only.
INLET
PRESSURE
psi
ORIFICE
SIZE
and
VALVE
ANGLE
OUTLET PRESSURE SER POINT and SPRING
6” w.c.
RED
SPRING
(1” w.c.
droop)
7” w.c.
BLUE
SPRING
(1” w.c.
droop)
11” w.c.
GREEN
SPRING
(2” w.c.
droop)
18” w.c.
ORANGE
SPRING
(3” w.c.
droop)
1psi
BLACK
SPRING
(0.2 psi
droop)
2psi
CADMIUM
SPRING
(0.6 psi
droop)
2
5
15
25
40
60
100
125
11⁄4”-30
11⁄4”-30
11⁄4”-30
1”-30
3⁄4”-30
3⁄4”-10
1⁄2”-10
3⁄8”-10
6,400
11,000
14,000
15,000
20,000
15,000
13,000
12,000
6,000
11,000
14,000
15,000
20,000
15,000
13,000
12,000
5,600
10,500
14,000
15,000
20,000
15,500
14,000
12,000
4,200
8,000
13,500
16,500
20,000
15,000
14,000
12,000
3,350
6,600
13,000
15,000
20,000
15,500
14,000
12,000
••••
8,200
15,500
18,000
20,000
16,500
16,000
12,000
2
5
15
25
60
100
125
11⁄4”-30
11⁄4”-30
11⁄4”-30
1”-30
3⁄4”-10
1⁄2”-10
3⁄8”-10
4,000
6,100
9,300
11,000
12,000
12,000
11,000
3,800
5,700
9,300
11,000
10,500
12,000
11,000
4,000
6,000
10,000
11,500
12,500
12,500
11,000
3,000
5,600
10,000
11,500
12,500
13,000
11,000
2,800
5,500
10,000
11,000
12,500
13,000
11,000
••••
6,000
13,000
14,500
15,000
16,000
12,000
5
5
10
10
25
25
40
80
100
125
1”-10
11⁄4”-10
1”-10
11⁄4”-10
1”-10
11⁄4”-10
1”-10
3⁄4”-10
1⁄2”-10
3⁄8”-10
8,200
10,500
12,000
15,000
20,000
22,000
24,000
30,000
19,000
15,000
6,500
7,800
10,000
13,000
17,000
20,000
21,000
21,000
19,000
15,000
7,200
8,500
11,000
13,500
17,000
20,000
24,000
27,000
19,000
15,000
5,500
6,500
8,000
11,000
15,000
18,000
21,000
22,000
19,000
15,000
5,400
7,000
8,500
10,500
14,500
18,000
20,000
22,000
19,000
15,000
6,800
8,600
10,500
13,000
20,000
25,000
25,000
25,000
19,000
15,000
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O*
O
O*
O
O*
O
O
O
O
INLET
PRESSURE
psi
ORIFICE
SIZE
AND
VALVE
ANGLE
6” w.c.
RED-BLACK
SPRING
(1” w.c.
droop)
7” w.c.
BLUE-BLACK
SPRING
(1” w.c.
droop)
18” w.c.
GREEN
SPRING
(3” w.c.
droop)
1psi
ORANGE
SPRING
(0.2 psi
droop)
3psi
BLACK
SPRING
(0.6 psi
droop)
5psi*
CADMIUM
SPRING
(1 psi
droop)
10 psi*
CADMIUM and
WHITE SPRING
(2 psi
droop)
11⁄2”
243-8
11⁄4”
243-8
2”
243-8
2
10
25
40
80
100
125
1”-30
1”-30
1”-30
3⁄4”-10
1⁄2”-10
3⁄8”-10
1⁄4”-10
3,200
7,400
12,500
10,500
11,500
11,000
8,000
2,700
7,000
12,500
10,500
11,500
11,000
8,000
2,100
6,600
11,500
11,000
12,000
11,000
8,000
2,100
6,500
11,000
11,000
11,500
11,000
8,000
••••
7,100
12,500
13,000
13,500
12,000
8,000
••••
6,000
12,000
12,000
11,000
11,000
8,000
••••
••••
12,000
15,000
17,000
15,000
9,000
2
10
25
40
80
100
125
3⁄4”-10
3⁄4”-10
3⁄4”-10
3⁄4”-10
1⁄2”-10
3⁄8”-10
1⁄4”-10
2,250
3,100
4,200
4,200
5,600
6,000
6,000
1,700
2,900
4,200
4,800
5,600
6,000
6,000
1,900
2,950
4,400
5,300
4,850
6,000
8,000
1,850
2,700
4,150
5,300
4,650
6,000
8,000
••••
3,600
5,000
6,300
5,500
6,550
8,000
••••
3,300
4,400
5,800
4,500
6,000
8,000
••••
••••
9,000
12,000
13,000
13,000
8,800
5
10
25
40
80
100
125
1”-30
1”-30
1”-30
3⁄4”-30
1⁄2”-10
3⁄8”-10
1⁄4”-10
5,500
9,400
14,500
20,000
14,000
12,000
8,000
4,000
7,000
14,500
17,500
13,500
11,000
8,000
4,400
7,600
15,000
17,500
15,000
12,000
8,000
••••
6,000
13,000
12,000
11,500
11,000
8,000
••••
••••
15,500
22,000
18,500
16,000
9,000
Refer to Bulletin R-1306 for detailed capacity tables and curves. *243-8HP only.
OUTLET PRESSURE SET POINT and SPRING
4
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O

Sensus Metering Systems, 805 Liberty Boulevard, DuBois, PA 15801
[phone]
FAX [phone]
Representatives in all principal cities.
Distributors throughout the world.
805 Liberty Boulevard
DuBois, PA15801
Authorized Distributor:
Printed in USA
NUPP 1/07-5M
LIMITED WARRANTY Seller warrants the Goods to be free from defects in materials manufac-
tured by Seller and in Seller’sworkmanship for a period of [one (1) year] after tender of deliv-
ery (the “Warranty Period”). THIS LIMITED WARRANTY (a) IS IN LIEU OF, AND SELLER DIS-
CLAIMS AND EXCLUDES, ALL OTHER WARRANTIES, STATUTORY, EXPRESS OR
IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE, OR OF CONFORMITY TO MODELS OR
SAMPLES; (b) does not apply to any Goods which have been (i) repaired, altered or improper-
ly installed; (ii) subjected to improper use or storage; (iii) used or incorporated with other mate-
rials or equipment, after Buyer or anyone using the Goods has, or reasonably should have,
knowledge of any defect or nonconformance of the Goods; or (iv) manufactured, fabricated or
assembled by anyone other than Seller; (c) shall not be effective unless Buyer notifies Seller in
writing of any purported defect or nonconformance within [thirty (30) days] after Buyer discov-
ers or should have reasonably discovered such purported defect or nonconformance; and (d)
shall only extend to Buyer and not to any subsequent buyers or users of the Goods. Buyer shall
provide Seller access to the Goods as to which Buyer claims a purported defect or nonconfor-
mance; upon request by Seller, Buyer shall, at its own risk and expense, promptly return the
Goods in question to Seller’s plant.
NSF
QUALITY SYSTEM
REGISTERED TO
ISO 9001