GB2141525A

GB2141525A - Pneumatic valve

Info

Publication number: GB2141525A
Application number: GB08415176A
Authority: GB
Inventors: Hans-Ulrich Jungen
Original assignee: Honeywell Lucifer SA
Current assignee: Parker Hannifin Manufacturing Switzerland SA
Priority date: 1983-06-15
Filing date: 1984-06-14
Publication date: 1984-12-19
Also published as: JPS608581A; GB8415176D0; CH654391A5; IT1180068B; IT8453455V0; JPH0450472B2; DE3422073A1; FR2548326B1; IT8467575A0; DE3422073C2; FR2548326A1; IT8467575A1

Abstract

A pneumatic valve comprises a body 1 made of synthetic material with a number of ducts 2 opening on to a face 3 of the body to which is applied a metal plate 5 provided with projections 6 containing tapped sockets 4 capable of receiving threaded connecting pipes, O-rings 10 providing a sealed path between the sockets 4 and the ducts 2. The valve body can be moulded in synthetic materials suitable for a varied range of applications, while the plate 5 of metal provides the necessary strength for connection to the connecting pipes, and plates having different threads (e.g. metric, BSP) may be interchanged to accommodate different thread standards of the connecting pipe. The plate 5 may be secured by end members 15 of the valve, by the valve mountings, or by adjacent valve bodies in a multivalve assembly. <IMAGE>

Description

SPECIFICATION Pneumatic valve The present invention relates to a fluid valve comprising a body with a number of ducts opening on to the same face of the body via orifices capable of receiving threaded connecting pipes.

These connecting orifices are normally provided with tapped sockets, for which various types of thread (metric, BSP, NPT, etc.) are in common use. If a manufacturer wishes to market such valves in different countries, he must either produce a range of models with different threads or supply the valves with a set of adapters, which increases both the cost price and the overall dimensions of the valves.

Furthermore, because of the stresses imposed when the connecting pipes are tightened, it is virtually essential to use metal threads as the synthetic materials used for valve bodies are not strong enough.

The purpose of the invention is to overcome these difficulties. Accordingly the present invention provides a fluid valve comprising a body with a number of ducts opening on to the same face of the body via orifices capable of receiving connecting pipes, characterized in that it is fitted with a metal plate which can be applied to the face and is fixed by elements forming an integral part of the valve or by the valve fastenings, this plate having tapped sockets projecting on at least one side of the plate, seals being provided between the plate and the body to ensure a sealed path between each socket and its duct.

The valve can therefore easily be adapted to different threads. Equally, the design enables the valve body to be made of synthetic material suitable for a varied range of applications while at the same time providing threaded connections of the required strength.

Three embodiments of the invention will now be described, by way of example, with reference to the drawings, in which: Figure 1 is a partly sectionalized side view of a first valve.

Figure 2 is an enlarged section of part of the valve of Fig. 1.

Figure 3 is a perspective view of one of the plates used for the valve of Fig. 1.

Figure 4 is a partial part-sectional view of a second valve.

Figure 5 shows the plate of the valve of Fig. 4.

Figure 6 is a partial part-sectional view of a multiple valve.

Figure 7 shows the plate of one of the valves of Fig. 6.

The pneumatic valve illustrated in Figs. 1 to 3 comprises a valve body 1 made of synthetic material with ducts 2 opening on to the upper and lower faces 3 of the body. Each of these two faces has a respective metal plate 5 applied to it, provided with inward projections 6 perforated by tapped holes 4. At the orifices 7 the valve body 1 is provided with ducts 2 and recesses 8 designed to receive the projections 6. Each recess 8 has an annular groove 9 housing an O-ring 10, which presses against the outside of the projection 6, thereby ensuring a sealed path between the socket 4 and the duct 2 when the plate 5 is mounted on the valve body 1.

The metal plate 5 is provided with longitudinal stiffeners 11. The two right-angled lips 1 2 continue to form lugs 13, which are substantially parallel to the main plane of the plate 5. These lugs 1 3 engage in slots 1 4 provided in the two cover plates 1 5 and 16, which are bolted to the valve body 1 and thereby fix the plate 5 to the valve body 1.

The variant illustrated in Figs. 4 and 5 has a metal plate 1 7 reinforced by a longitudinal rib 27 and held rigidly against the valve body 1 by the valve fastenings 1 8. This plate 1 7 does not require lugs 1 3 but holes 1 9 to take the fixing bolts 18, and the projections 6b face outwards.

The second variant shown in Figs. 6 and 7 relates to valves arranged side by side. This variant has a metal plate 24 with lugs 25 designed to engage in the slots 26 recessed into the bodies of other valves or terminal elements fixed on both sides of the valve body 1. In the types of assembly illustrated in Figs.

4 and 6 the valve body often comprises two parts 1a and 1b.

The valve body can be made of synthetic material. The valve body can be moulded in a variety of materials suitable for specific applications. As the connecting device can be fitted and changed as a complete unit, adaptation to the standard threads specified in the various regions of the world is greatly facilitated.

1. A fluid valve comprising a body (1) with a number of ducts (2) opening on to the same face (3) of the body via orifices capable of receiving connecting pipes, characterized in that it is fitted with a metal plate (5, 17, 24) which can be applied to the face (3) and is fixed by elements (15, 16) forming an integral part of the valve or by the value fastenings (18), this plate (5, 17, 24) having tapped sockets projecting on at least one side of the plate, seals (10) being provided between the plate (5, 17, 24) and the body (1) to ensure a sealed path between each socket (4) and its duct (2).

2. A valve in accordance with Claim 1, characterized in that the body (1) is made of synthetic material.

3. A valve in accordance with either previous claim, characterized in that the plate (5, 17) is provided with at least one stiffening rib (11, 27), the body (1) being designed to

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Pneumatic valve The present invention relates to a fluid valve comprising a body with a number of ducts opening on to the same face of the body via orifices capable of receiving threaded connecting pipes. These connecting orifices are normally provided with tapped sockets, for which various types of thread (metric, BSP, NPT, etc.) are in common use. If a manufacturer wishes to market such valves in different countries, he must either produce a range of models with different threads or supply the valves with a set of adapters, which increases both the cost price and the overall dimensions of the valves. Furthermore, because of the stresses imposed when the connecting pipes are tightened, it is virtually essential to use metal threads as the synthetic materials used for valve bodies are not strong enough. The purpose of the invention is to overcome these difficulties. Accordingly the present invention provides a fluid valve comprising a body with a number of ducts opening on to the same face of the body via orifices capable of receiving connecting pipes, characterized in that it is fitted with a metal plate which can be applied to the face and is fixed by elements forming an integral part of the valve or by the valve fastenings, this plate having tapped sockets projecting on at least one side of the plate, seals being provided between the plate and the body to ensure a sealed path between each socket and its duct. The valve can therefore easily be adapted to different threads. Equally, the design enables the valve body to be made of synthetic material suitable for a varied range of applications while at the same time providing threaded connections of the required strength. Three embodiments of the invention will now be described, by way of example, with reference to the drawings, in which: Figure 1 is a partly sectionalized side view of a first valve. Figure 2 is an enlarged section of part of the valve of Fig. 1. Figure 3 is a perspective view of one of the plates used for the valve of Fig. 1. Figure 4 is a partial part-sectional view of a second valve. Figure 5 shows the plate of the valve of Fig. 4. Figure 6 is a partial part-sectional view of a multiple valve. Figure 7 shows the plate of one of the valves of Fig. 6. The pneumatic valve illustrated in Figs. 1 to 3 comprises a valve body 1 made of synthetic material with ducts 2 opening on to the upper and lower faces 3 of the body. Each of these two faces has a respective metal plate 5 applied to it, provided with inward projections 6 perforated by tapped holes 4. At the orifices 7 the valve body 1 is provided with ducts 2 and recesses 8 designed to receive the projections 6. Each recess 8 has an annular groove 9 housing an O-ring 10, which presses against the outside of the projection 6, thereby ensuring a sealed path between the socket 4 and the duct 2 when the plate 5 is mounted on the valve body 1. The metal plate 5 is provided with longitudinal stiffeners 11. The two right-angled lips 1 2 continue to form lugs 13, which are substantially parallel to the main plane of the plate 5. These lugs 1 3 engage in slots 1 4 provided in the two cover plates 1 5 and 16, which are bolted to the valve body 1 and thereby fix the plate 5 to the valve body 1. The variant illustrated in Figs. 4 and 5 has a metal plate 1 7 reinforced by a longitudinal rib 27 and held rigidly against the valve body 1 by the valve fastenings 1 8. This plate 1 7 does not require lugs 1 3 but holes 1 9 to take the fixing bolts 18, and the projections 6b face outwards. The second variant shown in Figs. 6 and 7 relates to valves arranged side by side. This variant has a metal plate 24 with lugs 25 designed to engage in the slots 26 recessed into the bodies of other valves or terminal elements fixed on both sides of the valve body 1. In the types of assembly illustrated in Figs. 4 and 6 the valve body often comprises two parts 1a and 1b. The valve body can be made of synthetic material. The valve body can be moulded in a variety of materials suitable for specific applications. As the connecting device can be fitted and changed as a complete unit, adaptation to the standard threads specified in the various regions of the world is greatly facilitated. CLAIMS

3. A valve in accordance with either previous claim, characterized in that the plate (5, 17) is provided with at least one stiffening rib (11, 27), the body (1) being designed to accommodate the rib (11, 27).

4. A valve in accordance with any previous claim, characterized in that the plate (11, 27) is provided with lugs (1 3, 25) substantially parallel to its main plane and designed to engage in slots (14, 26) recessed into elements (15, 16) attached to the body (1) or into the bodies (1) of other valves fixed on both sides of the valve body (1) on which the plate (24) is mounted.

5. A fluid valve substantially as herein described and illustrated.