Cotswold Engineering Supplies Online Store – Hydraulic Quick Release Couplings Technical Info

ISO A Series
Pull Break Hydraulic Couplings

INTRODUCTION

Holmbury ISO.A Series couplings are the ideal choice where a tough, durable product of superior quality is required. They are perfectly suited to industrial and agricultural applications. A poppet valve is used to minimise the pressure drop characteristics and provide a positive sealing arrangement.

HQ SERIES 1⁄4" – 1 1⁄4"
FULLY COMPLIANT WITH
ISO 16028:1999/AMD.1:2006(E)

APPLICATIONS

HQ Series couplings are designed for use in excavator hammer circuits and other applications involving high pressure pulses. Construction plant, mobile equipment,general industrial, nuclear, mining and agricultural.

HQ Series couplings are suitable for applications involving dusty or dirty environments and where oil loss on disconnection cannot be tolerated..

ADVANTAGES

• Flat mating faces are easily wiped clean to prevent the ingress of contaminants.

• Improved flow path minimises the pressure drop.

• Non-spill design avoids fluid loss during connection and disconnection.

• No air intrusion during connection.

• Locking sleeve prevents accidental disconnection.

• Zinc nickel surface treatment eliminates chrome 6 and exceeds 200 hour salt spray tests to white rust.

Rotary Adaptor Coupling
In-line & 90° types GGIL

INTRODUCTION

Holmbury presents a new addition to its range, Rotary Couplings. Produced in both in-line and 90° configurations, these items are normally available from stock for rapid despatch.

In-line type Ratings
Size	01	02	03	04	05	06	07	09
Max Flow (l/min)	25	45	80	120	150	200	250	300
Max Pressure (bar)	400	400	360	310	280	250	210	180
Max Rotary Speed (rev/min)	500	400	370	280	230	200	170	140

90° type Ratings
Size	01	02	03	04	05	06	07	09
Max Flow (l/min)	25	45	80	120	150	200	250	300
Max Pressure (bar)	400	400	360	310	280	250	210	180
Max Rotary Speed (rev/min)	500	400	370	280	230	200	170	140

TB Series
Trailer Brake Couplings

INTRODUCTION

Holmbury Trailer Brake Couplings are used to connect the hydraulic braking system of tractors to their trailers. The male coupling is normally panel mounted on the tractor and is available with metric and BSP threads.

VPC SERIES
Hose Burst Valves

INTRODUCTION

Holmbury Hose Burst Valves are used to prevent the uncontrolled descent of a load in the event of a hose failure. They should be screwed directly into the lifting device (normally a cylinder), or into an in-line manifold that should be mounted as close as possible to the lifting device. A flow regulator valve, set at least 50% higher than the regulated flow, should be fitted downstream from the hose burst valve at the end of the flexible hose.

CV Series
Check Valves

INTRODUCTION

One-way valve for in-line use.Suitable for any type of hydraulic system using liquids that are not highly viscous. The standard types are in zinc plated carbon steel and are therefore especially suitable for non-corrosive mineral based oils and liquids.