|
09/17/1997 08:43 562-427-5806 UPE PYKE PAGE 04
<br />0 Q
<br />THE XLP ... 3 STEP LEAK TEST
<br />The Red Jacket XLP leak detector is
<br />a Dross u re -sensing. piston -operated
<br />v,jIvP
<br />designed to indicate a leak in the
<br />piping bgjwqqm the Teak del or and
<br />rhe dispenser.
<br />When the line pressure is at approxi-
<br />r-j,,jtoiy iqss than I psi and the sub-
<br />od Dump is turned on, a controlled
<br />,.4r,oumI of product (three gallons per
<br />Ll
<br />1p TOO
<br />P,essu- n.iw
<br />Apo,*. 25 PSI
<br />Lost thi I I
<br />I psi V
<br />4Th 0mcriflo9" L-9
<br />The TrIp or Related Position. Under
<br />normal operaiing conditions, it is
<br />,ISSUmed that the lines are filled With
<br />gasoline When the system pressure is
<br />less thin I Psi. the piston and poppet are
<br />in "down- or 'tnpped' Position The
<br />C)o.conon of the vilve poppet is Such as to
<br />"Illow approximately 1. 112 to 3 GPM fic,
<br />into the delivery line through a bypass
<br />opening in the XLP valve poppet when
<br />the subrmarsible Pump il;tans Since the
<br />,ty7le
<br />,m q; full, pressure builds rapidly and
<br />poppet moves to the leak sensing
<br />ot),otion assuming thore is no leak
<br />pro,,ent. The pressure relief valve
<br />Dmvorits any build UP of Pressure Under
<br />vision when in trip position by allowing
<br />ir,,Irl of travved product
<br />as is metered in through the XLP.
<br />Under this condition pressure cannot
<br />build up in the piping system. When a
<br />2022if
<br />sr
<br />PSI
<br />FullI I
<br />PrMule
<br />App'... 25 PSI
<br />4— rrom Piji
<br />IT., Dschw9v Line
<br />P,"
<br />flow to apprOXIMPtli 1- 112 to 3 G P14—
<br />a leak is present."
<br />0 there are no leaks. pressure rapidly
<br />builft in the system forcing the XLP to
<br />open to the f ull-f low position Ina
<br />system with no leaks, 0 iakor apprnxi-
<br />mataly two seconds for a complete to,' t
<br />No funher line testing takes place until
<br />the line pressure drops below
<br />2. Leak Sensing Position. As the
<br />pressure builds to approximately 20 to 22
<br />psi (rapidly) the Piston
<br />has moved the
<br />poppet to Such a position as to almost
<br />stop the flow into the piping through the
<br />XLP valve Poppet In this Position, all
<br />Crave are
<br />metering gin Which limits it to approxi- --1
<br />m 1 3 PH 'ate if a iiimult
<br />approxi-
<br />mately 3 GPM ii&W If a simultaneous
<br />ss from IN site
<br />this amoun &Sure will not
<br />build beyond this point and the val%'Q will 3 -
<br />remain in the leak sensing position with
<br />the main Now blocked. it them is an
<br />attempt to dispense while the valve is In
<br />this position, the line pressure will drop.
<br />the piston will respond. and the Poppet
<br />will rCtUm to Position I where the 1^112
<br />to 3 GPM will now to the dispensers '
<br />If there is no leakage in the system. the
<br />Small flow around the metering pin
<br />increases the line pressure to 22 Vi" in
<br />approximately two seconds at which
<br />point the piston will snap the poppol 10
<br />Position 3, allowing lull flow- Any product
<br />ral oved through pros 5vre rollof valve
<br />during trip position will be vented JhFQ(jgh
<br />vent tube to lank This allows piston to
<br />move freely with no back pr"surr, to
<br />hamper its movement
<br />Non -Look Position, This position allows
<br />full Now The Poppet will fornlin in this
<br />position as long as the sylom Pro—Irr
<br />remains above 1 psi At losii, than I psi.
<br />the poppet will return to Position I n"d
<br />the next time the pump is aCtiv-111od the
<br />XLP will perform a line tort
<br />,It ttir ri,spe nsv,g system (the solenoid valve and the rigt1ti is opened pr9wous to the completion of the line test. the XLP will detect this opening
<br />'I. I lo'll, ;and restricted flow will result_ Closing or the mozZlia(s) for & period of time, adequate to allow completion of the lime test, will allow then XLP
<br />to oo(an This_ in turn, will allow full Now providing there is no additional escape for IU91 in the system
<br />1�� per the above process, this product Is designed and sold to detect looks of approximately 3GPH or
<br />greater only. For leeks of less than approximately 3GPH, Please consult witty your Marley Pump Company
<br />reoresentetive.
<br />XLP-31®1 o142
<br />r
<br />Fipll PISK&Ufft
<br />Aop,ox 7's PSI
<br />4—teem
<br />All PPeSfuro1
<br />E us'
<br />47v 0,itchn,90 ti
<br />If there is no leakage in the system. the
<br />Small flow around the metering pin
<br />increases the line pressure to 22 Vi" in
<br />approximately two seconds at which
<br />point the piston will snap the poppol 10
<br />Position 3, allowing lull flow- Any product
<br />ral oved through pros 5vre rollof valve
<br />during trip position will be vented JhFQ(jgh
<br />vent tube to lank This allows piston to
<br />move freely with no back pr"surr, to
<br />hamper its movement
<br />Non -Look Position, This position allows
<br />full Now The Poppet will fornlin in this
<br />position as long as the sylom Pro—Irr
<br />remains above 1 psi At losii, than I psi.
<br />the poppet will return to Position I n"d
<br />the next time the pump is aCtiv-111od the
<br />XLP will perform a line tort
<br />,It ttir ri,spe nsv,g system (the solenoid valve and the rigt1ti is opened pr9wous to the completion of the line test. the XLP will detect this opening
<br />'I. I lo'll, ;and restricted flow will result_ Closing or the mozZlia(s) for & period of time, adequate to allow completion of the lime test, will allow then XLP
<br />to oo(an This_ in turn, will allow full Now providing there is no additional escape for IU91 in the system
<br />1�� per the above process, this product Is designed and sold to detect looks of approximately 3GPH or
<br />greater only. For leeks of less than approximately 3GPH, Please consult witty your Marley Pump Company
<br />reoresentetive.
<br />XLP-31®1 o142
<br />
|