Murphy Network Card PD8100 Series User Manual

PD-95145B  
Revised 11-03  
Catalog Section 55  
(00-02-0125)  
Pulsation Dampener  
PD8100 Series  
Used On Controllers, Instruments and  
Recorders to Dampen Pressure Pulsation  
Eliminate Gage Pointer Flutter  
Aids In Providing More Accurate  
Pressure Indication  
Decreases Wear On Gage’s  
Geared Movement  
NOT INTENDED FOR USE AS A SHUTOFF VALVE  
Eliminate pointer flutter  
like this.  
Description  
Specifications  
The PD8100 Series eliminates pointer flutter  
on pressure indicating SWICHGAGE® devices  
which are subject to pulsating pressure from  
reciprocating pumps or compressors. It also  
allows a close setting of high and low contact  
points providing for more accurate pressure  
indication and control of equipment.  
See “How to Order” section for available inlet  
and outlet connections.  
PD8183: All wetted parts are Brass. Rated to  
MURPHY SWICHGAGE  
RUN  
3,000 psi (20.68 MPa) [206.80 bar].  
START  
PD8184: All wetted parts are Carbon steel.  
Rated to 5,000 psi (34.47 MPa) [344.70  
bar].  
PD8185: All wetted parts are 303 stainless  
steel. Rated to 10,000 psi (68.95 MPa)  
[689.50 bar].  
The PD8100 Series decreases wear on geared  
movements and increases the life of pressure  
indicating instruments by eliminating exces-  
sive gage strain and unnecessary movement.  
PD8190: All wetted parts are 316 stainless  
steel. Rated to 10,000 psi (68.95 MPa)  
[689.50 bar]. Meets NACE standard MR-  
01-75 for direct exposure to H2S.  
A necessity which quickly pays for itself by  
protecting any pressure indicating and control  
instrument which is subject to pulsation.  
PD8100 SERIES NOT FOR USE ON  
OXYGEN OR LIQUID  
Operating Temperature:  
®
Make SWICHGAGE instruments  
-15 to 400°F (-26 to 204°C)  
and recorders operate like this.  
Shipping Weight (all models):  
OXYGEN APPLICATIONS.  
2 lbs.(0.9 kgs.)  
Quality built with a large diameter valve stem  
wheel for ease of adjustment with clearly printed  
operating instructions. Machined from 1-3/8 in.  
(35 mm) hex bar stock. A two degree taper on  
valve and stem assure positive dampening.  
MURPHY SWICHGAGE  
Shipping Dimensions (all models):  
RUN  
4-3/4 x 4-3/4 x 3-1/4 in. (121 x 121 x 83 mm)  
START  
Warranty  
A limited warranty on materials and workmanship  
is given with this FW Murphy product. A copy of  
the warranty may be viewed or printed by going to  
Available in brass, carbon steel, 303 stainless  
steel or 316 stainless steel to meet pressure  
and environmental requirements with either  
1/2 NPT or 1/4 NPT inlet connections.  
 

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