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earth safe
Fuel Systems for Critical Power
Pipin
The cause of many pumping problems can be traced to suction piping. It should always be as
large and short as practical. Before starting layout and installation of your piping system,
consider the following points:
1. N v r us piping small r than th pump port conn ctions.
2. B sur th insid of th pip is cl an b for hooking it up.
3. Foot valv — Wh n pumping a light liquid with a suction lift, a foot valv at th nd of th
suction piping or a ch ck valv in th first horizontal run will hold th liquid in th lin and
mak it asi r for th pump to prim . B sur th foot or ch ck valv is big nough so that it
do sn’t caus xc ssiv lin loss.
4. Wh n approaching an obstacl in th suction or discharg lin , go around th obstacl
inst ad of ov r it. This minimiz s air pock ts air pock ts which mak it hard for th pump to
prim .
5. For a suction lin with a long horizontal run k p th horizontal portion b low th liquid
l v l if possibl . This k ps th pip full so th pump do s not hav to r mov so much air
wh n starting.
6. B sur allowanc is mad for xpansion and contraction of th piping. Loops, xpansion
joints, or uns cur d (this do s not m an unsupport d) runs should b us d so th pump
casing is not str ss d by th piping.
7. Strain r — Th pump inl t strain r will k p for ign obj cts from going into th pump. Th
strain r is particularly important at start up to h lp cl an th syst m of w ld b ads, pip
scal , and oth r for ign obj cts.
8. Th pump should not b us d to support th piping. Th w ight of th pip should b
carri d by hang rs, supports, stands, tc.
9. Wh n fast ning th piping to th pump it should not b n c ssary to impos any strain on
th pump casing. “Springing” or “drawing” th piping up to th pump will caus distortion,
possibl misalignm nt, and probabl rapid w ar of th pump. Do not us th pump to
corr ct rrors in piping layout or ass mbly.
10. All joints of th piping syst m should b tight; pip s al r will h lp assur l ak-fr thr ad d
joints. L aks in th suction lin r duction in capacity.
11. Provid a pr ssur r li f d vic in any part of a pump and piping syst m that can b valv d
off and, thus, compl t ly isolat d. Th ris in t mp ratur caus s th liquid to xpand; if
th r is no provision for pr ssur r li f in th clos d off s ction, th r is a chanc that th
pump or piping will ruptur .
EMERGENCY POWER FUEL SYSTEMS
Model M300
Filtration Polisher
INSTALLATION, OPERATION, AND MAINTENANCE
