ELIMINATOR Adjustable Drop Nipple
Merit Eliminator Adjustable Drop Nipples provide the user with the
ability to adjust fire sprinkler assemblies (concealed, recessed, or
pendent) to fit flush to the finished ceiling without having to cut a
drop nipple or drain the system.
• Available in two models, female or male thread inlet, with three
standard lengths with adjustment up to 3" (7.62 cm)
• UL Listed, FM Approved, and BSA-NYC Approved for installation to NFPA Bulletin 13 requirements. VdS Approved for the
European market.
• Cold formed from steel conforming to ASTM Grade.
• Inner nipples employ two (2) “O-Rings” to provide added
assurance of sealing. The “F” Model is designed to keep “ORings” from impinging upon the one inch (1") inlet threads when
fully retracted.
• The bore of the outer nipple is precision formed to a close
tolerance while held to a microfinish of 50 to provide for
positive sealing of the “O-Rings”.
• Each unit is hydrostatically tested to insure “O-Ring” integrity
prior to shipment.
• Each unit is marked with a lot number to insure full traceability.
• Qualifying tests on all models are performed at 1500 PSI, while
the various models are rated for 300 PSI operation.
• Threads are cut to be better than or equal to the requirements of
ANSI B1.20.1, NPT or ISO-7-1 threads.
VdS
For Listings/Approval Details and Limitations,
visit our website at www.anvilintl.com
or contact an Anvil® Sales Representative.
PRODUCT APPROVALS
Eliminator Adjustable Drop Nipple :
(UL VGSQ – EX3829, FM Approval Guide Chapter 1 -
Adjustable Sprinkler Fittings VdS Certificate #G4930033 BSA: 886-86-SA)
Adjustable
Drop Model
M1.150
M3.150
ME3.150
F1.150
F2.150
F3.150
F3.175
Inlet x Outlet
NPT In./mm In./mm Ft./M psig F/C
1 x
25 x 13 25.4 0.3
1 x
25 x 13 76.2 0.3
1 x
25 x 13 76.2 0.3
1 x
25 x 13 25.4 1.3
1 x
25 x 13 50.8 0.4
1 x
25 x 13 76.2 0.5
1 x
25 x 19 76.2 0.9
Adjustment
Size
1
⁄2 1 1
1
⁄2 3 1
1
⁄2 3 1
1
⁄2 1 4.2
1
⁄2 2 1.3
1
⁄2 3 1.5
3
⁄4 3 2.9
Equivalent
Length
Rated
Pressure
300
Max. Ceiling
Ambient
Temperature
300˚
148˚
ELIMINATOR ADJUSTABLE DROP NIPPLE
Model
Number
M1.150* 531150 1" Male
M3.150 533150 1" Male
ME3.150* 543150 1" Male
F1.150 501150 1" Female
F2.150* 502150 1" Female
F3.150 503150 1" Female
F3.175 503175 1" Female
* Special Order
Length Tolerance ± 1⁄4"
Part # Inlet Outlet
NPT/ISO NPT/ISO NPT/ISO In./mm In./mm In./mm In./mm Lbs./kg
551150 25mm Male 13mm Female 104.8 130.2 25.4 13.5 0.45
553150 25mm Male 13mm Female 155.6 231.8 76.2 13.5 0.57
563150 25mm Male 13mm Female 200.0 276.2 76.2 13.5 0.68
511150 25mm Female 13mm Female 88.9 114.3 25.4 15.9 0.36
512150 25mm Female 13mm Female 114.3 165.1 50.8 15.9 0.45
513150 25mm Female 13mm Female 139.7 215.9 76.2 13.5 0.57
513175 25mm Female 19mm Female 186.7 262.9 76.2 15.9 0.64
1
⁄2" Female 4.125 5.125 1.00 0.531 1.00
1
⁄2" Female 6.125 9.125 3.00 0.531 1.25
1
⁄2" Female 7.875 10.875 3.00 0.531 1.50
1
⁄2" Female 3.500 4.500 1.00 0.625 0.80
1
⁄2" Female 4.500 6.500 2.00 0.625 1.00
1
⁄2" Female 5.500 8.500 3.00 0.531 1.25
3
⁄4" Female 7.350 10.350 3.00 0.625 1.40
PROJECT INFORMATION APPROVAL STAMP
Project:
Address:
Contractor:
Engineer: Remarks:
Submittal Date:
Notes 1:
Notes 2:
FP-9.14
Minimum
Length
Maximum
Length
Maximum
Adjustment
Approved
q
Approved as noted
q
Not approved
q
Maximum Sprinkler
Orifice
Weight
ELIMINATOR Adjustable Drop Nipple
INSTALLATION
A) For use in wet and dry pipe automatic sprinkler systems installed in accordance with all
• MODEL ‘F’ INSTALLATION
MIN.
MAX.
LENGTH
CEILING TILE
SPRINKLER HEAD
MODEL ‘F’
• MODEL ‘M’ INSTA LLATION
BRANCH PIPE
MIN.
MAX.
LENGTH
CEILING TILE
SPRINKLER HEAD
MODEL ‘M’
• DRAWING OF MODEL ‘M’ & ‘F’
1" NPT OR ISO
MALE THRD
INLET
1" NPT OR ISO
FEMALE THRD
INLET
applicable standards or codes. (See item 4)
B) Before starting the job of making sprinklers into steel threads of the above fittings, count
the number of fully developed male threads on the brand of sprinkler to be installed into
the fittings. If seven (7) perfect threads are counted, the sprinkler should thread into the
3
⁄4" thread from three (3) to four (4) threads hand tight. If five (5) to six (6) threads
or
are counted, the sprinkler should thread into the
(3) threads hand tight.
C) The use of an anaerobic pipe thread sealant is preferred for thread make up when con
necting to another pipe fitting or nipple. If attaching a sprinkler head, please refer to
the manufacturer’s installation instructions and apply pipe thread sealant only to male
threads of the sprinkler.
D) If either of the above fails to allow the sprinkler to make-up to a minimum of from five
(5) to six (6) full threads, do not overtighten the sprinkler. Instead back the sprinkler out
of the fitting. Clean any debris and/or pipe sealant from both the male and female
threads. Gauge both the male threads of the sprinkler and the female threads of the
Adjustable Drop Nipple for compliance with ANSI B1.2.1. Specification for Tapered
Pipe Threads. The same procedure would apply if a leak has been detected.
If within tolerance, reapply the anaerobic pipe sealant and make-on to the required
length. Allow twenty-four hours for setting.
E) Connect the Adjustable Drop Nipple assembly to the sprinkler system by wrenching on the
make-up area on the Drop Nipple. DO NOT WRENCH ON THE BARREL PORTION OF
THE UNIT OR SPRINKLER. Damage to the Adjustable Drop Nipple or Sprinkler may result.
F) After the ceiling has been installed adjust the sprinkler to its final position by using the
sprinkler wrench and assemble the escutcheon plate to the inner support ring. It is rec
ommended that the system pressure be relieved when adjusting, however it is not necessary to drain the system.
1) GENERAL DESCRIPTION
Merit Eliminator Adjustable Drop Nipples Models “M” and “F” are the screw type consisting of an outer case which has one (1) inch N.P.T. or ISO-7 male or female thread on the
inlet, and an inner case which has either a one-half inch (
N.P.T. sprinkler connection. The inner case employs 0-Ring Seals and adjusts either in or
out over the range of the adjustment.
Merit Eliminator Adjustable Drop Nipples are designed for use in automatic fire sprinkler
systems installed in accordance with all applicable standards or codes. (See item 4).
The purpose of these fittings is to allow for the final adjustment of the drop nipple between
a branch line and a pendant sprinkler by eliminating the need to re-cut the existing drop
nipple in order to fit-up flush to the ceiling. Merit Eliminator Adjustable Drop Nipples do not
require any secondary locking following final adjustment and they will not extend as a
result of vibrations or pressure surges in the system.
2) APPROVALS AND STANDARDS
Merit Eliminator Adjustable Drop Nipples are listed by the Underwriters Laboratories, Inc.
(UL Listing Number 57SO) and approved by the Factory Mutual Research Corporation (FM).
In addition, Model “M” and “F” Adjustable Drop Nipples are approved by the New York
Board of Materials and Equipment Standard (BSA-886-86-5A) and verband der
Schadenversicherer e.V., (Vds).
1
⁄2" or 3⁄4" thread from two (2) to three
1
⁄2") or a three-quarter inch (3⁄4")
1
⁄2"
-
-
FP-4.12
MIN.,
MAX.
LENGTH
1
⁄2" NPT
FEMALE THRD
OUTLET
MIN.,
MAX.
LENGTH
1
⁄2" or 3⁄4" NPT
FEMALE THRD
OUTLET
3) TECHNICAL DATA
Merit Adjustable Drop Nipples are rated for use at a maximum temperature of 300° F, and
a maximum service pressure of 300 psi.
The approximate friction loss based on the Hazen and Williams Formula expressed in equiv
alent length of one (1) inch, schedule 40 pipe (where C= 120) is 1' for
3
⁄4" outlet Model “M”, 4.2' for F1, 1.3' for F2, 1.5' for F3.150, and 2.9' for F3.175.
2.6' for
Merit Eliminator Drop nipples maximum sprinkler orifice size for Models M3.150, ME3.150,
M1.150, and F3.150 is
17
⁄32" and Models F1.150, F2.150 and F3.175 is 5/8".
1
⁄2" outlet Model “M”,
The inlet and outlet threads conform to ANSI B1.20.1 / ISO-7R/RC.
The O-Ring seals used in the manufacture are an ethylene propylene elastomer (EPDM).
The outer and inner casings are manufactured from high strength carbon Steel.
All Model “M” and “F” Adjustable Drop Nipples are hydrostatically tested for O-ring
integrity prior to shipment.
4) WARNING
Adjustable Drop Nipples described herein must be installed and maintained in compliance
with this document as well as the applicable standards of the National Fire Protection
Association in addition to the standards for any other authorities having jurisdiction. DO
NOT USE ANY PETROLEUM BASED LUBRICANTS ON THE O-RING SEALS. Petroleum
based lubricants are incompatible with EPDM and will impair serviceability of the unit.
-
Loading...