Peter Paul Turns to Lean Manufacturing for Customization, Speed

Peter Paul Electronics Co., Inc. is converting its valve and solenoid production operations to Lean manufacturing technology to help meet increasing demand for custom orders and fast delivery. The company already is seeing dramatic benefits.

Mark Mangiafico, Chief Engineer, said that with traditional methods it was becoming increasingly difficult to meet a wide range of customer requirements and stay competitive. The modern marketplace requires more custom-designed products, but simultaneously needs flexibility and option as well as fast turn-around and delivery, he said.

“We had to do something radical,” Mr. Mangiafico said. Since implementing the Lean technology to a key product line, “we have cut our lead time for that line from 3 weeks to two days, and we’ve experienced dramatic decreases in inventory levels.”

Peter Paul received assistance from Connecticut Department of Labor, Connecticut Light & Power – a division of Northeast Utilities, and CONNSTEP, Connecticut’s Manufacturing Resource Center sponsored by the Connecticut Department of Economic and Community Development. The firm also has received Connecticut’s Excellence in Lean Manufacturing award.

Peter Paul Electronics, established in 1947, provides through worldwide distribution a broad range of standard and miniature solenoid valves, Explosion-proof, high-flow and high pressure models – most UL and CSA listed; complementary manifolds and stacking bodies in stainless, brass or aluminum solenoid valve operators for OEM use; and a vast array of body, housing and coil options for standard and special applications.

For further information, contact:
Peter Paul Electronics Co., Inc.
480 John Downey Dr., P.O. Box 1180
New Britain, CT 06050-1180
Phone: 860-229-4884
Fax: 860-223-1734
E-mail: info@peterpaul.com

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This time delay coil with built-in thermistor (cutaway) is at the heart of the Peter Paul Series 30 solenoid vlaves employed on many oil burners produced by Carlin Combustion Technology Inc. The solenoid valve provides assurance that a spark is present in the burner before oil flow begins

Peter Paul Time Delay Coils Check Process Before Media Flow

Time delay coils with built-in thermistors have been developed for the Series 30 solenoid valves produced by Peter Paul Electronics Co., Inc., New Britain, Connecticut.

The thermistor circuit in the solenoid valve coil delays the pick up of the valve's plunger from 2 to 6 seconds. This allows the solenoid to be certain of the required process parameters before media flow commences.

A common example is the start-up sequence for an oilburner. It is vital that a sensor in the furnace's electrical circuit "sees" that a flame has been generated to continue the flow of fuel oil. If there is no flame, oil flow may flood the burner, often requiring maintenance or an extended period of time before a re-start can be initiated. When the call activates the burner, the solenoid valve's time delay function allows the pump and fan/motor to reach operating speed before starting fuel flow.

The Peter Paul Series 30 solenoid valve, UL recognized and CSA listed, is frequently used in these boiler and furnace applications because of its economical pricing and compact size. For instance, the Carlin Model 701 dual-rate commercial flame retention oil burner, with two Series 30 valves, operates at 3450 RPM using No.2 oil in the 4-13 gallon per hour firing range and features a unique combustion head for positive flame retention under a wide variety of operating conditions.

The nearly 50-year-old Peter Paul Electronics Co., through a worldwide distributor network, provides a broad range of Standard, Miniature solenoid valves; Explosion-Proof, High-Flow, and High Pressure models; complimentary manifolds and stacking bodies in stainless, brass, or aluminum; solenoid valve operators for OEM use; and a vast
array of body, housing, and coil options for standard and special applications.

For further information, write:
Time Delay Coil, Peter
Paul Electronics Co., Inc.
480 John Downey Drive, P.O. Box 1180
New Britain, CT 06050-1180
Phone: 860-229-4884
Fax: 860-223-1734
E-mail: info@peterpaul.com

Solenoid Valves for Portable Refirgerant Recovery - Recycling Systems

These are some typical 2-Way and 3-Way Normally Open and Closed low-power solenoid valves that are intended for portable refrigerant recover-recycling systems. Their inlet pressure ratings range up to 500 psi. They come equipped with 1/8" and 1/4" NPT pipe sorts, 3/8" copper sweat tubing, or with provisions for manifold mounting. Spade terminals, lead wires, or conduit connections for standard AC or DC voltages are available. Orifice sizes range from 1/32" to 1/4". Also available are compact stainless steel, brass, and aluminum manifolds with up to eight inlet ports. Some madels have built-in back pressure designs, to eliminate redundant check valve by stopping possible refrigerant leakage during servicing.

Series 20 with Back Pressure:
2-Way Normally Closed
Orifice size: 5/64
Voltage: Any AC or DC voltage
Inlet Pressure: 280 PSI max
Back Pressure: 150 PSI max
Power Consumption: 12 Watts AC; 9.5 Watts DC
Electrical Connections: Spade Terminals
Body Connections: 1/8 NPT pipe ports or
copper (sweat) tubing
Seals: Neoprene

Series 20 without Back Pressure:
2-Way Normally Closed
Orifice Size: 5/64
Voltage: Any AC or DC Voltage
Inlet Pressure: 300 PSI max
Back Pressure: None
Power Consumption: 12 Watts AC; 9.5 Watts DC
Electrical Connections: Spade Terminals
Body Connections: 1/8 NPT pipe ports or
copper (sweat) tubing
Seals: Neoprene

Series 50:
2-Way Normally Colsed
Orifice Size: 1/16 or 5/64
Voltage: 1/16 - AC or DC
5/64 - Any AC
Inlet Pressure: 300 PSI max
Back Pressure: None
Power Consumption: 6.6 Watts AC; 7 Watts DC
Electrical Connections: Spade Terminals
Body Connections: 1/8 NPT pipe ports or
manifold mounting
Seals: Neoprene

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The Gaymar Medi-Therm II hyperthermia/hypothermia therapy console incorporates two Peter Paul Series 20 solenoid valves (inset) with diode-rectified coils and plunger-to-end stop bumpers for smooth, noise-free, low heat rise operation. The valves provide liquid flow control at +/- 1°C for regulated heat or cold therapy.

Solenoid Valves Key To Heat/Cold Theapy System

A new hyperthermial/hypothermia system, the Medi-Therm II from Gaymar Industries in western New York, now incorporates our specialized solenoid valves to maintain precise fluid flow and temperature control.

Medi-Therm II, based on 25 years of hyper/hypothermia experience, incorporates a simple, touch panel console to program hours of regulated heat and cold therapy. Separate heating and cooling reservoirs provide rapid heat-up and cool-down rates to achieve the desired patient therapy in cases ranging from serious burns to sub-zero accidents. The therapy is applied through a series of plastic/non-woven fabric mattress blankets, which contact the patient.

Fluid flow and temperature at +/- 1°C are controlled by a pair of our Series 20, diode coil, two-watt, Normally Closed solenoid valves. Designed for quiet hospital applications, these valves incorporate a urethane bumper between the plunger and end stop, creating a rubber-to-metal contact within each valve to virtually eliminate the on/off click of the valve during operation. In addition, Nordel seals are used to handles the warm, 42°C water in the system.

Each valve’s potted coil with diode circuit converts the 120 VAC, 50/60 Hz current to DC to slow the valve down, to further enhance its quiet operation, and to lower the heat rise often encountered with fast cycling AC solenoids. These diode-rectified valves are specified for an increasingly wide range of hospital and laboratory devices.

The 55-year-old Peter Paul Electronics provides, through distributors
worldwide, a broad range of standard and miniature solenoid valves;
Explosion-Proof, high-flow, and high pressure models; complementary
manifolds and stacking bodies in stainless, brass, or aluminum; solenoid
valve operators for OEM applications; and a vast array of body, housing,
and coil options for specialty valve construction. Most Peter Paul
solenoid valves are UL and CSA listed.

For further information, write:
Peter Paul Electronics Co., Inc.
480 John Downey Drive, P.O. Box 1180
New Britain, CT 06050-1180
Phone: 860-229-4884
Fax: 860-223-1734
E-mail: info@peterpaul.com

This EDRO DX250 Tilt open pocket washer-extractor features automated tilt-to-load and door opening functions, plus six speed operation at up to 330 RPM via microprocessor control. Used by a clothing manufacturer to process stone washed jeans, it offers pneumatic brake, door lock, and drain functions which help conserve energy and water usage. The 250 pound (11 Kg.) capacity washer is also used by hotels, hospitals, commercial laundries, and similar establishments.

A series of Peter Paul solenoid valves, mounted externally on the electronics cabinet of an EDRO Model DW600PNSWE-13AER Dyna WashTM

Comparing Gear Drive, Electric, and Pneumatic Functions on Commercial / Military Laundry Washer-Extractors

The EDRO Corporation, founded in 1946 in Connecticut, introduced a new machine design for the commercial laundry market in 1954. Their combination washer-extractor eliminated the time-consuming step of transferring the water-laden laundry from washer to a separate extractor, while the patented 3D Dyna Wash^TM cylinder provided a space-saving triangular floor design for superior wash action and minimum vibration during extraction due to its evenly distributed load. This improved the productivity of the washroom while increasing the efficiency of labor usage and utility consumption. Widely employed in hospitals, hotels, nursing homes, commercial laundries, correctional facilities, and cruise ships, EDRO is the leading supplier of shipboard washer-extractors to the U.S. Navy, with units currently operating on 540 of the 600 active duty ships.

In the 1950's and early 60's, when machines of 200-300 pound capacity were considered large, many machine functions including drain, brake, and clutch were gear driven. While this technology was widespread and well understood, gear driven functions were inherently slow, somewhat inefficient, and prone to mechanical failure. Relatively low capacity washer-extractors (up to, perhaps, 100 pound capacity) could be configured with all electric drive motors, but the increasingly high capacity machines required in the marketplace, now in the 400-800 pound volume range, were not good candidates for motor drives.

As a result, suggests EDRO Director Of Sales & Marketing Edward S. Kirejczyk III, the company concluded that pneumatic or air drives for many laundry machine functions were faster, cleaner, and more responsive, especially given the availability of low cost, reliable microprocessor controls. The employment of standard solenoid valves, typically mounted external to the washer-extractor for accessibility, seemed superior to all-electric controls by eliminating the possibility of switch burn-out when contacts remain closed for extended periods.

With fully automated cycles from loading to washing, moisture removal, final conditioning, and unloading, air actuated brakes have been found to be stronger and longer lasting than their electric counterparts, providing more positive and timely stops without operator intervention. Even the drain and door lock functions on most machines over 50 pound capacity are now controlled by an air cylinder and valve for reliability and low cost operation.

According to Mr. Kirejczyk, EDRO builds about one commercial-strength washer-extractor daily year round, most of them equipped with Series 20, 3-way, multi-purpose solenoid valves from Connecticut-based Peter Paul Electronics Co., Inc. The ready availability of production quantities of these valves has, over a period of time, made the transition to air actuation a simple and profitable choice for EDRO, while providing more reliable equipment for users worldwide.

For further information, write:
Solenoid Valves
Peter Paul Electronics Co., Inc.
480 John Downey Drive, P.O. Box 1180
New Britain, CT 06050-1180
Phone: 860-229-4884
Fax: 860-223-1734
E-mail: info@peterpaul.com