泵运行时介质从泵内的排出腔通过密封腔内的间隙漏回到吸入腔的泄漏量，通过螺旋型面之间的间隙的泄漏量要远大于通过螺杆衬套内孔和螺旋面外圆之间间隙的泄漏量。螺旋型面之间的啮合间隙是依据产品的排出压力和输送介质粘度来确定，通常排出压力越高和输送介质的粘度越小，要求该间隙也越小。在制作加工螺旋型面的成型铣刀时必须考虑该间隙值。对于高压三螺杆泵，该间隙尤应严格控制，这样才能达到较高的容积效率。

2GbS、2GbSR双螺杆泵进出口法兰宽度:

2GbS、2GbSR78双螺杆泵进出口法兰宽度:200mm、190mm

2GbS、2GbSR91双螺杆泵进出口法兰宽度:200mm、190mm

2GbS、2GbSR104双螺杆泵进出口法兰宽度:220mm、210mm

2GbS、2GbSR130双螺杆泵进出口法兰宽度:250mm、255mm

2GbS、2GbSR156双螺杆泵进出口法兰宽度:285mm、280mm

2GbS、2GbSR182双螺杆泵进出口法兰宽度:345mm、320mm

2GbS、2GbSR208双螺杆泵进出口法兰宽度:405mm、380mm

2GbS、2GbSR247双螺杆泵进出口法兰宽度:460mm、445mm

2GbS、2GbSR286双螺杆泵进出口法兰宽度:520mm、520mm

2GbS、2GbSR312双螺杆泵进出口法兰宽度:580mm、585mm

2GbS、2GbSR351双螺杆泵进出口法兰宽度:640mm、650mm

2GbS、2GbSR403双螺杆泵进出口法兰宽度:715mm、710mm

2GbS、2GbSR双螺杆泵具体型号说明:

2GbS78-20    2GbSR78-20

2GbS78-24    2GbSR78-24

2GbS91-24    2GbSR91-24

2GbS91-27    2GbSR91-27

2GbS104-27   2GbSR104-27

2GbS104-32   2GbSR104-32

2GbS130-26   2GbSR130-26

2GbS130-33   2GbSR130-33

2GbS130-39   2GbSR130-39

2GbS156-39   2GbSR156-39

2GbS156-47   2GbSR156-47

2GbS168-33   2GbSR168-33

2GbS168-43   2GbSR168-43

2GbS168-57   2GbSR168-57

2GbS182-46   2GbSR182-46

2GbS182-54   2GbSR182-54

2GbS208-52   2GbSR208-52

2GbS208-62   2GbSR208-62

2GbS247-62   2GbSR247-62

2GbS247-74   2GbSR247-74

2GbS286-85   2GbSR286-85

2GbS286-72   2GbSR286-72

2GbS286-86   2GbSR286-86

2GbS312-80   2GbSR312-80

2GbS312-100  2GbSR312-100

2GbS351-90   2GbSR351-90

2GbS351-115  2GbSR351-115

2GbS403-100  2GbSR403-100

2GbS403-130  2GbSR403-130