Instruction Manual for F1300/1600 Mud Pump
15
1.6.6. Valve Cover
Install valve cover seal ring (18) into bore, and after grease the valve cover seal area and threads
area, tighten the valve covers into place using a sledge hammer and bar.
1.6.7 Discharge Manifold
API 5"（127mm）5000psi flanges are provided on the discharge manifold. Remove discharge flange and
seal gasket area before welding (customer's option for the welding methods) flange on the discharge
piping. Tighten flange connection bolts with 1625-2165 N.m (1200~1600ft.lbs.) torque. Tighten nuts
in a cross-criss order.
1.6.8 Suction Manifold Flange
The suction flange has 3 12" (305mm）connection flanges. Generally they are installed as per oilfield
condition: one is connected with suction manifold inlet, one with suction dampener, and one is
plugged by blankoff flange. An O-ring seals off the connection. Thoroughly clean O-ring groove and
face of flanges before making up connection. Tighten flange bolts with 490~665N.m (360~490ft.lbs).
1.6.9 Auxiliary Manifold
An auxiliary manifold is shown in Fig.9. It can be installed on the discharge manifold opposite the
discharge end. The manifold can connect with KB-75 pulsation dampener (1), shear relief pin (3) and
pressure gauge (2).
Fig. 9
(1) Pulsation dampener (2) pressure gauge (3) shear relief valve (4) Seal washer (5) flange bolt (6)
Discharge four-way joint (7) Seal washer (8)nut (9) Seal washer
An auxiliary manifold connects with discharge manifold by flange. Before assembly thoroughly clean
joint groove of flange, install seal washer (4) and tighten the flange bolts (5) with 1625-2165N.m.
(1200-1600ft.lbs) torque. To assure uniform make-up of seal washer connection, the clearance
between flange end faces should be even, tighten the nuts in a criss-cross order.
The shear relief valve (3) is installed on the auxiliary manifold for the purpose of protecting the pump
from excessively high-pressure overloads. The relief valve must be installed correctly so that is will be
directly contacted with the mud pump. DO NOT PUT ANY TYPE OF SHUT OFF VALAE between the
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