type “d” pilotair valve exclusively for: r431000925 ... · grease and all metal-to-metal...

TYPE “D” PILOTAIR® VALVE

Exclusively for: R431000925 (formerly P -028996-00000) &

R431000926 (formerly P -028996-00001)

Service Information

INDEX Installation .................................................. 1 Maintenance ............................................... 1 Kit Assembly ............................................... 1-2 Operation Procedures ................................ 2-3 Drawings ..................................................... 4 Basic Valve & Repair Kits ........................... 5 Lever Operator ........................................... 6 Solenoid Operator ...................................... 7

______________________________________

WARNING - INSTALLATION AND MOUNTING

The user of these devices must conform to all applicable electrical, mechanical, piping and other codes in the installation, operation or repair of these devices.

Installation! Do not attempt to install, operate

or repair these devices without proper train-ing in the technique of working on pneumatic systems and devices, or under trained supervision.

Compressed air systems contain high levels of stored energy. Do not attempt to connect, disconnect or repair these products when a system is under pressure. Always exhaust the pressure from an air system before per-forming any service work. Failure to do so can result in serious personal injury.

Mounting! Devices should be mounted and positioned in such a manner that they cannot be accidentally operated.

INSTALLATION Mount the “D” PILOTAIR Valve on a solid flat surface by means of the mounting holes in the body. Do not support the valve by piping alone. It may be installed in any position. When installed vertically, protect the end of the valve if there is danger of dirt or moisture falling into it.

Connect the port in the body of solenoid operators to an air supply not exceeding 150 psi (10 Bar). The pilot cylinder operator contains a 1/32” choke for air operation.

Identify passages through the valve and label ports before installation. To facilitate installation, each port, each end bracket and the operator can be rotated in 90° steps around the stem by removing the tie rods and turning the section. Do not make a modification unless it is absolutely necessary. All modifications should be made on a clean bench to insure that dirt does not enter the valve.

ADJUSTMENT The “D” PILOTAIR Valve requires no adjustment.

SM-700.7502

MAINTENANCE Periodically dismantle the “D” PILOTAIR® Valve for inspection and cleaning. Wash all metal parts with a non-flammable solvent. Wash all seals with soap and water and examine them for cracks or signs of wear. Dry all parts with a low-pressure air jet. Replace worn or defective parts. Reassemble the valve, using the exploded view as reference. The valve should be reassembled using new rubber parts. As the assembly proceeds, lubricate all rubber parts with Dow Corning 55 M Grease and all metal-to-metal surfaces with Number 107 Lubriplate.

KIT ASSEMBLY At times, operators in kit form and assembled valve portions are stocked separately, and complete “D” PILOTAIR Valves are assembled as needed. The operator kits are packages containing the entire operator’s parts and all the fastenings needed to assemble the operator to the valve. The exploded illustrations accompanying the operators’ parts lists in this booklet show how the parts fit together. To assemble a complete valve from the kits, remove the stem from the valve portion. Assemble the operator portion and connect the stem to it. Cover the stem with light oil. Remove the tie rod nuts and always assemble the short threaded ends of the tie rod first to use the full thread. This will obtain full thread engagement on both ends when the long threaded end is assembled last. Insert the stem in the valve portion. Tighten the bolts evenly together.

OPERATION To operate a “D” PILOTAIR Valve a manual, mechanical, pneumatic, hydraulic or electrical force is applied to its operator. This force moves the valve’s stem which, in moving to another position, opens and/or closes internal passages in the valve. The accompanying diagrams illustrate how the valve’s stem opens and closes its passages. The valve portion of a “D” PILOTAIR Valve in addi-tion to its stem, has two end sections, a body seg-ment for each tapped port, seals between sections and seal retainers. Four tie rods, which pass through each section, hold these parts together.

This four-way valve has open exhaust ports with three tapped ports-one supply and two delivery ports. The exhaust ports are the openings in the end sections through which the stem passes. Passages between sections are the openings in the sides of sections through which the stem passes. Lands on the stem close these openings. Grooves on the stem open them. Stem position determines whether a land or a groove is in an opening. The seals in the valve portion prevent the es-cape of fluid through the joints between sec-tions and past the lands of the stem. The seal retainers keep stem drag and unbalanced in-ternal fluid pressures from forcing the seals into the path of the stem where they could be damaged. Operators are attached to the ends of valve portions by tapped bolts, which screw onto the ends of the tie rods. They are connected to the valve stems by cotter pins or roll pins. The lever operator can move a stem in both directions. The others can only push it. The solenoid operator uses local fluid pressure to move the valve’s stem.

This valve operates with a full return spring. A full return spring moves the valve to its position at the other end of its travel with the removal of an operating force that had moved it from this position.

This “D’ Pilotair has a solenoid operator with a full spring return on one end The other end of the valve has a lever operator without springs. This operator can move the stem in both directions.

This “D” Pilotair with a solenoid with a full spring has a normal stem position, which is the position to which the spring returns the stem to the solenoid end of the when the power from the solenoid is removed.

The ends of the “D” Pilotair Valve is identified with and “A” and: B” end. The “A” end of the valve is the one with the nameplate. This valve is a spring offset 4-way.

When the valve is de-energized the port on the “A” end of the valve is open.

New Part Number

Previous Part Number Description

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REPAIR KITS LIST

NEW 1/2” PT. NO. OLD 1/2” PT. NO. DESCRIPTION

R431008035 PD-040000-00001 LEVER OPERATING KIT, Complete, Less Spring (Includes items 1 thru 12)

1 PIN, Cotter 9 ROLL PIN

2 PIN, Rod End 10 LEVER

3 NUT, Mounting Adapter (4 req’d) 11 BALL, Lever

4 ADAPTER, Mounting 12 STOP and SPRING RETAINER

5 PIN, Cotter 13 SPRING

6 PIN, Rod End 14 STOP

7 LINK, (2 req’d) 15 RETAINER, Spring

8 SLEEVE, Retainer

LEVER OPERATOR

DIMENSIONS

Size 1/2”

A 3-3/4”

B 3/8”

C 6-1/32”

D 6-29/32”

E 1-15/16”

Reproduced from drawing BP50635 (1/2”). If dimensions are critical, ask for their certification.

REPAIR KITS LIST

NEW 1/2” PART NO.

OLD 1/2" PART NO.

DESCRIPTION



1 SOLENOID (12 or 24 VDC) 6 RING, Packing 2 NUT, Mounting Adapter (4 req'd) 7 STOP and SPRING RETAINER

3 BODY, Solenoid Adapter 8 SPRING

4 ROLL PIN 9 STOP

5 PISTON 10 RETAINER, Spring

* This operator is to be used only on a valve with another operator.

** Use this operator only with another operator having CENTERING Spring.

SOLENOID OPERATOR

150 psi (10 Bar) maximum, 45 psi (3 Bar) minimum with spring, 12 psi (0.8 Bar) minimum without spring.

Size A B C D E F G

1/2” 4.56 1.19 2.31 1.38 1.38 2.50 1.95

Optional Coils

New Part Number

Previous Part Number

Coil Voltage

R431005918 P -061920-00003 24 Volts DC

R431005919 P -061920-00004 12 Volts DC

Repair Parts for Solenoid Operators

New Part Number

Previous Part Number

Coil Voltage

R431005645 P -060969-00000 Kit, Minor Solenoid Repair - PD2 - and PD4 - Valves (includes Plunger, Spring, Base Gasket)

R431002035 P -049708-00215 O-ring, Pilot Piston (Standard) -PD4 - Valves

NOTICE TO PRODUCT USERS

1. WARNING: FLUID MEDIA AVENTICS pneumatic devices are designed and tested for use with filtered, clean, dry, chemical free air at pressures and temperatures within the specified limits of the device. For use with media other than air or for human life support systems, AVENTICS must be consulted. Hydraulic cylinders are de-signed for operation with filtered, clean, petroleum based hy-draulic fluid; operation using fire-resistant or other special types of fluids may require special packing and seals. Consult the factory. 2. WARNING: MATERIAL COMPATIBILITY Damage to product seals or other parts caused by the use of noncompatible lubricants, oil additives or synthetic lubricants in the air system compressor or line lubrication devices voids AVENTICS warranty and can result in product failure or other malfunction. See lubrication recommendations below. AIR LINE LUBRICANTS! In service higher than 18 cycles per minute or with continuous flow of air through the device, an air line lubricator is recommended.* (Do not use line lubrication with vacuum products.) However, the lubricator must be main-tained since the oil will wash out the grease, and lack of lubri-cation will greatly shorten the life expectancy. The oils used in the lubricator must be compatible with the elastomers in the device. The elastomers are normally BUNA-N, NEOPRENE, VITON, SILICONE and HYTREL. AVENTICS recommends the use of only petroleum based oils without synthetic addi-tives, and with an aniline point between 180° F and 210° F. COMPRESSOR LUBRICANTS! All compressors (with the exception of special "oil free" units) pass oil mist or vapor from the internal crankcase lubricating system through to the com-pressed air. Since even small amounts of non-compatible lubri-cants can cause severe seal deterioration (which could result in component and system failure) special care should be taken in selecting compatible compressor lubricants. 3. WARNING: INSTALLATION AND MOUNTING The user of these devices must conform to all applicable elec-trical, mechanical, piping and other codes in the installation, operation or repair of these devices.

INSTALLATION ! Do not attempt to install, operate or repair these devices without proper training in the technique of work-ing on pneumatic or hydraulic systems and devices, unless under trained supervision. Compressed air and hydraulic sys-tems contain high levels of stored energy. Do not attempt to connect, disconnect or repair these products when a system is under pressure. Always exhaust or drain the pressure from a system before performing any service work. Failure to do so can result in serious personal injury. MOUNTING! Devices should be mounted and positioned in such a manner that they cannot be accidentally operated. 4. WARNING: APPLICATION AND USE OF PRODUCTS The possibility does exist for any device or accessory to fail to operate properly through misuse, wear or malfunction. The user must consider these possibilities and should provide ap-propriate safe guards in the application or system design to prevent personal injury or property damage in the event of a malfunction. 5. WARNING: CONVERSION, MAINTENANCE AND REPAIR When a device is disassembled for conversion to a different configuration, maintenance or repair, the device must be tested for leakage and proper operation after being reassembled and prior to installation. MAINTENANCE AND REPAIR! Maintenance periods should be scheduled in accordance with frequency of use and working conditions. All AVENTICS products should provide a minimum of 1,000,000 cycles of maintenance free service when used and lubricated as recommended. However, these products should be visually inspected for defects and given an "in sys-tem" operating performance and leakage test once a year. Where devices require a major repair as a result of the one million cycles, one year, or routine inspection, the device must be disassembled, cleaned, inspected, parts replaced as re-quired, rebuilt and tested for leakage and proper operation prior to installation. See individual catalogs for specific cycle life estimates. 6. PRODUCT CHANGES Product changes including specifications, features, designs and availability are subject to change at any time without no-tice. For critical dimensions or specifications, contact factory. *Many AVENTICS pneumatic valves and cylinders can operate with or without air line lubrication; see individual sales catalogs for details.

LIMITATIONS OF WARRANTIES & REMEDIES AVENTICS warrants its products sold by it to be free from defects in material and workmanship to the following: For twelve months after shipment AVENTICS will repair or replace (F.O.B. our works), at its option, any equipment which under normal conditions of use and service proves to be defective in material or workmanship at no charge to the purchaser. No charge will be made for labor with respect to defects covered by this Warranty, provided that the work is done by AVENTICS or any of its authorized service facilities. However, this Warranty does not cover expenses incurred in the removal and reinstallation of any product, nor any downtime incurred, whether or not proved defective. All repairs and replacement parts provided under this Warranty policy will assume the identity, for warranty purposes, of the part re-placed, and the warranty on such replacement parts will expire when the warranty on the original part would have expired. Claims must be submitted within thirty days of the failure or be subject to rejection. This Warranty is not transferable beyond the first using purchaser. Specifically, excluded from this Warranty are failures caused by mis-use, neglect, abuse, improper operation or filtration, extreme temperatures, or unauthorized service or parts. This Warranty also ex-cludes the use of lubricants, fluids or air line additives that are not compatible with seals or diaphragms used in the products. This War-ranty sets out the purchaser's exclusive remedies with respect to products covered by it, whether for negligence or otherwise. Neither, AVENTICS nor any of its affiliates will be liable for consequential or incidental damages or other losses or expenses incurred by reason of the use or sale of such products. Our liability (except as to title) arising out of the sale, use or operation of any product or parts, whether on warranty, contract or negligence (including claims for consequential or incidental damage) shall not in any event exceed the cost of replacing the defective products and, upon expiration of the warranted period as herein provided, all such liability is terminated. THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, WHETHER FOR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR OTHERWISE. No attempt to alter, amend or extend this Warranty shall be effective unless authorized in writing by an officer of AVENTICS Corporation.

AVENTICS reserves the right to discontinue manufacture of any product, or change product materials, design or specifications without notice.

type “d” pilotair valve exclusively for: r431000925 ... · grease and all metal-to-metal...

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