
OPTIONS & ACCESSORIES
Accessories
PRESSURE GAUGES 
Impulse Dampeners
870 Series Pressure Impulse Dampeners are designed to improve 
readability and prevent wear on delicate gauge mechanisms by 
slowing rapid pressure changes and reducing shock and chattering. 
An impulse dampener should be installed on a gauge in any application 
where pressure spikes and/or pulsations may be present.Trerice 
Impulse Dampeners are engineered for field serviceability (cleaning 
and parts replacement) and are constructed from brass or stainless 
steel for use on a variety of pressure media.
870 Series Impulse Dampeners
Item Body & Insert Connection Maximum
Service
Approximate
No. Material Size (NPT) Pressure (psig) Shipping Weight
870-1 Brass
1
/
4
1000 Air, water, steam and gases 0.5 lbs [0.23 kg]
870-2 Brass
1
/
4
1000 Gasoline and light oils 0.5 lbs [0.23 kg]
870-3 Brass
1
/
4
1000 Lubricating and heavy oils 0.5 lbs [0.23 kg]
870-7 303SS
1
/
4
5000 Includes 3 pistons for various viscosities 0.5 lbs [0.23 kg]
870-10 303SS
1
/
2
10,000 Includes 3 pistons for various viscosities 0.8 lbs [0.36 kg]
870-13 316SS
1
/
4
5000 Includes 3 pistons for various viscosities 0.5 lbs [0.23 kg]
870-16 316SS
1
/
2
10,000 Includes 3 pistons for various viscosities 0.8 lbs [0.36 kg]
Pressure Snubbers
872 Series Pressure Snubbers are designed to improve readability and prevent 
wear on delicate gauge mechanisms by slowing rapid pressure changes and 
reducing shock and chattering. A pressure snubber should be installed on a 
gauge in any application where pressure spikes and/or pulsations may be 
present. If a single snubber does not correct the oscillation, it is recommended to 
place an additional snubber in line with the first.Trerice Pressure Snubbers 
reduce the pulsation by forcing the pressure medium through a porous metal 
core and are constructed from brass or 303 stainless steel for use on a variety of 
pressure media.
872 Series Pressure Snubbers
Item  Body & Insert Connection Maximum Approximate
No. Material Size (NPT) Pressure (psig) Service Shipping Weight
872-1 Brass
1
/4 1000 Air and gases 0.1 lbs [0.05 kg]
872-2 Brass
1
/4 1000 Water, steam, gasoline and light oils 0.1 lbs [0.05 kg]
872-3 Brass
1
/4 1000 Lubricating and heavy oils 0.1 lbs [0.05 kg]
872-4 303SS
1
/4 2000 Air and gases 0.3 lbs [0.14 kg]
872-5 303SS
1
/4 2000 Water, steam, gasoline and light oils 0.3 lbs [0.14 kg]
872-6 303SS
1
/4 2000 Lubricating and heavy oils 0.3 lbs [0.14 kg]
872-7 Brass
1
/2 5000 Air and gases 0.1 lbs [0.05 kg]
872-8 Brass
1
/2 5000 Water, steam, gasoline and light oils 0.1 lbs [0.05 kg]
872-9 Brass
1
/2 5000 Lubricating and heavy oils 0.1 lbs [0.05 kg]
872-10 303SS
1
/2 10,000 Air and gases 0.3 lbs [0.14 kg]
872-11 303SS
1
/2 10,000 Water, steam, gasoline and light oils 0.3 lbs [0.14 kg]
872-12 303SS
1
/2 10,000 Lubricating and heavy oils 0.3 lbs [0.14 kg]
55
12950 W. Eight Mile Road • Oak Park, MI 48237-3288 • TEL:248/399-8000 • FAX: 248/399-7246 • www.TRERICE.com

Test Plugs & Accessories
The Trerice Test Plug provides a convenient access port for determining the pressure and/or temperature 
of process media contained in a pipe line or vessel. The test plug is designed for use in chilled or 
hot water systems and is permanently installed in the system at the desired test location. A test 
thermometer or pressure gauge with test adapter can be inserted through the plug to determine the conditions within the system. When the probe is withdrawn, the inner valve plug 
closes to seal the system. The test plug includes a removable cap to protect the inner valve 
plug and provide a secondary seal.
Nordel, otherwise known as EPDM, provides excellent service in hot or cold water. Nordel 
should not be used with hydr 
or turpentine. 
Neoprene, a synthetic rubber, provides excellent service in ammonia, high aniline point petroleum oils and 
silicate ester lubr
based lubricants
icants. Neoprene should not be used with silicone greases, silicone oils or di-ester
.
ocarbon solvents, hydrocarbon oils, chlorinated hydro carbons 
D3750  
shown
OPTIONS & ACCESSORIES
Test plugs are designed for initial startup 
and testing, not continuous or frequent use. 
If continuous or frequent use is desired or 
expected, a test well should be installed for 
temperature applications and a needle valve 
installed for pressure applications. 
Tests should be made as quickly as possible because the inner plug 
resealing time is dependent upon the length of time the probe remains 
inserted, as well as the temperature and pressure of the system. The 
test plug may take longer to reseal at lower temperatures or pressures. 
The probe used for testing should never exceed a diameter of 0.156" (4 
mm). The pressure gauge used for testing should always have a range of 
twice the system pressure.
Test Plugs
Test Plug 
Item No. Item No. Size (NPT) & Cap Core (psig) Temp. Shipping Weight
D3741 D3764
D3743 D3763
D3758 D3766
D3757 D3765
D3742 D3770
D3744 D3769
D3762 D3772
D3761 D3771
Test Plug 
with Retainer
Connection Body Max Pres. Max Approximate
1
/
4
Brass Nordel 1000 350°F 0.1 lbs [0.05 kg]
1
/
4
Brass Neoprene 1000 200°F 0.1 lbs [0.05 kg]
1
/
4
316SS Nordel 1000 350°F 0.1 lbs [0.05 kg]
1
/
4
316SS Neoprene 1000  200°F 0.1 lbs [0.05 kg]
1
/
2
Brass Nordel 1000 350°F 0.2 lbs [0.09 kg]
1
/
2
Brass Neoprene 1000 200°F 0.2 lbs [0.09 kg]
1
/
2
316SS Nordel 1000 350°F 0.2 lbs [0.09 kg]
1
/
2
316SS Neoprene 1000 200°F 0.2 lbs [0.09 kg]
Accessories
Item Approx.
No. Description Shipping
Weight
D3747 Gauge Adapter,  0.1 lbs
D3749 2" Brass Extension, 
D3753 2" Brass Extension, 0.2 lbs
1
/8" diameter [0.05 kg]
1
/4NPT [0.05 kg]
1
/2NPT [0.09 kg]
0.1 lbs
Test Kits
Item Pressure Approximate
No. Range (psi) Shipping Weight
D3750 0 to 100 1.4 lbs [0.64 kg]
D3751 0 to 200 1.4 lbs [0.64 kg]
D3752 0 to 300 1.4 lbs [0.64 kg]
D3748 0 to 600 1.4 lbs [0.64 kg]
Each test kit contains: 
(1) 700B Pressure Gauge, 
(1) B82105P03F&C Thermometer, 
(1) B82105P05F&C Thermometer, 
(1) D3747 Gauge Adapter, 
(1) Carrying Case
58
Test Kit Replacement Items
Item Description Approximate
No. Shipping Weight
700B2502LA110 700B Pressure Gauge, 21/2", 1/4 NPT, 
700B2502LA130 700B Pressure Gauge, 2
700B2502LA140 700B Pressure Gauge, 2
700B2502LA160 700B Pressure Gauge, 2
B82105P03 B82105 Bimetal Ther
B82105P05 B82105 Bimetal Thermometer, 
12950 W. Eight Mile Road • Oak Park, MI 48237-3288 • TEL:248/399-8000 • FAX: 248/399-7246 • www.TRERICE.com
lower connection, 0 to 100 psi 0.4 lbs [0.18 kg]
1
lower connection, 0 to 200 psi 0.4 lbs [0.18 kg]
lower connection, 0 to 300 psi 0.4 lbs [0.18 kg]
lower connection, 0 to 600 psi 0.4 lbs [0.18 kg]
13/4" dial size, 5" stem, 25° to 125°F & C 0.4 lbs [0.18 kg]
13/4" dial size, 5" stem, 20° to 240°F & C 0.4 lbs [0.18 kg]
/2", 1/4 NPT, 
1
/2", 1/4 NPT, 
1
/2", 1/4 NPT, 
mometer, 

OPTIONS & ACCESSORIES
Accessories
PRESSURE GAUGES
In applications where process media leakage may result in 
possible personal injury or property damage, gauge cocks 
should not be specified as they contain no packing gland and 
leakage may result. For tight shut-off and prevention of leakage, use of a Trerice Ball Valve or Needle Valve is required.
Ball Valves
866 Ball Valve is a single entry flow valve, incorporating a Teflon 
seat to shut off the flow of process media to the pressure instrument, 
thereby allowing the instrument to be isolated from the pressure media or 
removed from service.The Trerice 866 Ball Valve is constructed from brass, 
for use on air, water, oil and other noncorrosive process media. It is 
recommended to place a needle valve, ball valve or gauge cock 
in line before every pressure gauge installation. 
866 Ball Valve
Item Connection Maximum Maximum Approximate 
No. Type Size  Body Seat Ball Handle Pressure (psig) Temperature Shipping Weight
866 FXF
1
/
4 NPT
Brass Teflon Plated brass Lever 500 psig 180°F 0.1 lbs [0.05 kg]
Gauge Cocks
865/880 Series Quarter Turn Gauge Cocks provide an 
economical way to shut off the flow of air to the pressure 
instrument, thereby allowing the instrument to be isolated from 
the pressure media or removed from service.Trerice Gauge 
Cocks are constructed from brass and are intended for use on 
air lines where leakage is not of concern. It is recommended 
to place a needle valve, ball valve or gauge cock in line 
before every pressure gauge installation. 
865/880 Series Gauge Cocks
Item Connection Maximum Maximum Approximate 
No. Type Size  Body Plug Pressure (psig) Temperature Shipping Weight
865 FXF
1
/4 NPT Brass Brass 200 500°F 0.1 lbs [0.05 kg]
865MFG MXF
1
/4 NPT Brass Brass 200 500°F 0.1 lbs [0.05 kg]
865-1 FXF
1
/4 NPT Brass Brass 300 500°F 0.3 lbs [0.14 kg]
880 MXF
1
/4 Union Brass Brass 150 500°F 0.5 lbs [0.23 kg]
Pointer Jack
The D329 Pointer Jack is required for removing the pointer of a pressure gauge without 
causing damage to the dial face, pointer, pointer shaft or movement of the gauge.
Approximate Shipping Weight 
0.1 lbs [0.05 kg]
865MFG
865-1
880
865
57
12950 W. Eight Mile Road • Oak Park, MI 48237-3288 • TEL:248/399-8000 • FAX: 248/399-7246 • www.TRERICE.com

OPTIONS & ACCESSORIES
Test Plugs & Accessories
The Trerice Test Plug provides a convenient access port for determining the pressure and/or temperature 
of process media contained in a pipe line or vessel.The test plug is designed for use in chilled or 
hot water systems and is permanently installed in the system at the desired test location. A test 
thermometer or pressure gauge with test adapter can be inserted through the plug to determine the conditions within the system.When the probe is withdrawn, the inner valve plug 
closes to seal the system.The test plug includes a removable cap to protect the inner valve 
plug and provide a secondary seal.
Nordel, otherwise known as EPDM, provides excellent service in hot or cold water. Nordel 
should not be used with hydrocarbon solvents, hydrocarbon oils, chlorinated hydro carbons 
or turpentine. 
Neoprene, a synthetic rubber, provides excellent service in ammonia, high aniline point petroleum oils and 
silicate ester lubricants. Neoprene should not be used with silicone greases, silicone oils or di-ester
based lubricants
.
Tests should be made as quickly as possible because the inner plug 
resealing time is dependent upon the length of time the probe remains 
inserted, as well as the temperature and pressure of the system. The 
test plug may take longer to reseal at lower temperatures or pressures. 
The probe used for testing should never exceed a diameter of 0.156" (4 
mm). The pressure gauge used for testing should always have a range of 
twice the system pressure.
Test plugs are designed for initial startup 
and testing, not continuous or frequent use. 
If continuous or frequent use is desired or 
expected, a test well should be installed for 
temperature applications and a needle valve 
installed for pressure applications. 
Test Kits
Item Pressure Approximate
No. Range (psi) Shipping Weight
D3750 0 to 100 1.4 lbs [0.64 kg] 
D3751 0 to 200 1.4 lbs [0.64 kg] 
D3752 0 to 300 1.4 lbs [0.64 kg] 
D3748 0 to 600 1.4 lbs [0.64 kg]
Each test kit contains: 
(1) 700B Pressure Gauge, 
(1) B82105P03F&C Thermometer, 
(1) B82105P05F&C Thermometer, 
(1) D3747 Gauge Adapter, 
(1) Carrying Case
D3750  
shown
Test Kit Replacement Items
Item Description Approximate
No. Shipping Weight
700B2502LA110 700B Pressure Gauge, 21/2", 1/4 NPT, 
lower connection, 0 to 100 psi 0.4 lbs [0.18 kg]
700B2502LA130 700B Pressure Gauge, 2
1
/2", 1/4 NPT, 
lower connection, 0 to 200 psi 0.4 lbs [0.18 kg]
700B2502LA140 700B Pressure Gauge, 2
1
/2", 1/4 NPT, 
lower connection, 0 to 300 psi 0.4 lbs [0.18 kg]
700B2502LA160 700B Pressure Gauge, 2
1
/2", 1/4 NPT, 
lower connection, 0 to 600 psi 0.4 lbs [0.18 kg]
B82105P03 B82105 Bimetal Thermometer, 
13/4" dial size, 5" stem, 25° to 125°F & C 0.4 lbs [0.18 kg]
B82105P05 B82105 Bimetal Thermometer, 
13/4" dial size, 5" stem, 20° to 240°F & C 0.4 lbs [0.18 kg]
Test Plugs
Test Plug
Test Plug
with Retainer
Connection Body Max Pres. Max Approximate
Item No. Item No. Size (NPT) & Cap Core (psig) Temp. Shipping Weight
D3741 D3764
1
/
4
Brass Nordel 1000 350°F 0.1 lbs [0.05 kg]
D3743 D3763
1
/
4
Brass Neoprene 1000 200°F 0.1 lbs [0.05 kg]
D3758 D3766
1
/
4
316SS Nordel 1000 350°F 0.1 lbs [0.05 kg]
D3757 D3765
1
/
4
316SS Neoprene 1000  200°F 0.1 lbs [0.05 kg]
D3760 D3768
3
/
8
Brass Nordel 1000 350°F 0.1 lbs [0.05 kg]
D3759 D3767
3
/
8
Brass Neoprene 1000 200°F 0.1 lbs [0.05 kg]
D3742 D3770
1
/
2
Brass Nordel 1000 350°F 0.2 lbs [0.09 kg]
D3744 D3769
1
/
2
Brass Neoprene 1000 200°F 0.2 lbs [0.09 kg]
D3762 D3772
1
/
2
316SS Nordel 1000 350°F 0.2 lbs [0.09 kg]
D3761 D3771
1
/
2
316SS Neoprene 1000 200°F 0.2 lbs [0.09 kg]
Accessories
Item Approx.
No. Description Shipping
Weight
D3747 Gauge Adapter,  0.1 lbs
1
/8" diameter [0.05 kg]
D3749 2" Brass Extension, 0.1 lbs
1
/4NPT [0.05 kg]
D3753 2" Brass Extension, 0.2 lbs
1
/2NPT [0.09 kg]
12950 W. Eight Mile Road • Oak Park, MI 48237-3288 • TEL:248/399-8000 • FAX: 248/399-7246 • www.TRERICE.com
58