公开(公告)号：US20220082174A1

公开(公告)日：2022-03-17

申请号：US17477995

申请日：2021-09-17

Applicant: Fluid Handling LLC

Inventor： Paul J. RUZICKA ,  Matthew John RUFFO ,  Kongchi LUI

IPC: F16K27/02 ,  F16K15/02 ,  F16L37/40

Abstract: A check valve assembly includes multiple components. for coupling together first and second pipes, and has multiple components, including a check valve, a check valve housing, a check valve body adapter and a locking ring. A mating surface coupling between a check valve body adapter inlet mating surface and a check valve housing outlet mating surface together with a flange coupling between a check valve body adapter inlet coupling flange and a locking ring inwardly extending and circumferentially extending flange combines to form a check valve assembly union U that allows the multiple components of the check valve assembly to freely orient and align when the check valve assembly is threaded and coupled to the first and second pipes.

公开(公告)号：US20170298948A1

公开(公告)日：2017-10-19

申请号：US15452068

申请日：2017-03-07

Applicant: FLUID HANDLING LLC.

Inventor： Paul J. RUZICKA ,  Christopher J. FELIX ,  Marcos D. ROIMICHER

IPC: F04D29/056 ,  F04D17/16 ,  F04D17/12

Abstract: A multi-stage pump featuring different stages configured to pump a fluid from a pump suction and to a pump discharge; and a center bushing configured between the different stages, having a center bushing side configured with pockets to balance axial forces between the different stages of the multistage pump. The pockets are configured as curved rib pockets, extruded circle or circular pockets, or full length rib pockets.

公开(公告)号：US20170184115A1

公开(公告)日：2017-06-29

申请号：US15371878

申请日：2016-12-07

Applicant: Fluid Handling LLC

Inventor： Paul J. RUZICKA ,  Christopher J. FELIX

IPC: F04D29/16 ,  F04D29/08

Abstract: An opposing impeller arrangement, for using in an opposed impeller pump, features a combination of a stage 1 impeller arrangement and a stage 2 impeller arrangement having opposing impellers and different impeller and wear ring arrangements. The stage 1 impeller arrangement may include a stage 1 impeller and a stage 1 wear ring, and be configured to receive an input fluid flow and a pump stage 1 fluid flow. The stage 2 impeller arrangement may include a stage 2 impeller and a stage 2 wear ring configured to receive the pump stage 1 fluid flow and provide a pump stage 2 fluid flow, and may also include a stage 2 wear ring undercut configured between the stage 2 impeller and the stage 2 wear ring to offset generated axial thrust in the opposing impeller pump, based upon the different impeller and wear ring arrangements.

公开(公告)号：US20160315463A1

公开(公告)日：2016-10-27

申请号：US15133750

申请日：2016-04-20

Applicant: FLUID HANDLING LLC.

Inventor： Matthew J. RUFFO ,  Paul J. RUZICKA

IPC: H02H7/08 ,  H02H9/00

CPC classification number: H02H9/005 ,  H02P1/26 ,  H02P1/42

Abstract: A motor control circuit is provided for connecting or disconnecting an AC voltage to an AC motor, having a switch having two switch contacts, configured to respond to a process variable and move between open and closed switch contact positions to connect or disconnect the AC voltage to the AC motor; and a snubber circuit arranged across the switch contacts in parallel with the AC motor, and configured to respond to motor inductance when the switch is moved between the open and closed switch contact positions, and provide arc suppression in the switch by dissipating energy stored in the motor inductance. The snubber circuit may include a network having a resistor connected in series with a capacitor, or a metal oxide varistor, or a transient voltage suppressor.

Abstract translation: 提供电动机控制电路，用于将交流电压连接或断开到交流电动机，具有具有两个开关触点的开关，其被配置为响应过程变量并且在打开和闭合的开关触点位置之间移动以将AC电压连接或断开 交流电机; 以及缓冲电路，其布置在与所述交流电动机并联的所述开关触点上，并且被配置为当所述开关在所述开路和闭合的开关触点位置之间移动时响应于电动机电感，并且通过将存储在所述开关触点 电机电感。 缓冲电路可以包括具有与电容器串联连接的电阻器或金属氧化物变阻器或瞬态电压抑制器的网络。