*mydirectindustry

Catalogs
AMOT
4126 Crankcase Pressure Sensing Valve

4126 Crankcase Pressure Sensing Valve

Product catalog summary

Overview
AMOT Model 4126 is a crankcase pressure sensing valve designed to detect minor pressure surges that precede major crankcase explosions. It is highly sensitive to pressure buildups caused by worn packing or excessive blow-by, providing instant warnings or shutdowns to prevent major damage. The unit does not reset automatically and requires manual intervention.

Key Features and Benefits

Suitable for air, gas, or oil systems.
Adjustable pressure range of 0.017 – 0.034 bar (0.25 - 0.50 psi), with a higher range available using an auxiliary spring.
Primarily used with AMOT Safety Control Systems.

Specifications

Body Material: Cast aluminum.
Internal Parts: Plated steel and stainless steel.
Valve Seals and Diaphragm Material: Nitrile/Buna N.
Maximum Sensed Pressure: 2.1 bar (30 psi).
Maximum Valve Pressure (Port A): 8.6 bar (125 psi).
Net Weight: 1.7 kg (3.75 lb); Shipped Weight: 2.3 kg (5 lb).

Pressure Ranges

Standard Range: 0.017 - 0.034 bar (0.25 - 0.50 psi).
With Auxiliary Spring: 0.034 - 0.069 bar (0.50 - 1.0 psi).

Installation Factors
The pressure sensing port has a 2.54 cm (1 in.) female pipe tap. It is recommended to support the unit using a 2.54 cm (1 in.) pipe nipple from the engine crankcase door or frame. Install with the drain hole down to allow oil drainage. If supported horizontally, plug the drain hole to prevent oil backflow.

Ordering Information
Order by model number 4126A, specifying seal material (Buna N/Nitrile or Viton). The unit is shipped unset, so no pressure setting is required with the order.

Contact Information
AMOT has offices in Europe, Africa, the Americas, Asia, and Australasia. Contact details for each region are provided for further inquiries.

Catalog excerpts

Crankcase Pressure Sensing Valve Model 4126 Overview AMOT Model 4126 detects the minor pressure surge that usually precedes a major crankcase explosion. It will detect the smallest pressure buildup caused by worn packing or by excessive blow-by caused by a piston and liner just beginning to scuff. This high sensitivity provides instant warning or shutdown before major damage occurs as the unit will not reset itself automatically. Typical applications l This model is a 2-Way valve for use primarily with AMOT Safety Control Systems Key features and benefits l Suitable for air, gas, or oil systems Type 4126 Crankcase Pressure Sensing Valve l Adjustable range of 0.017 – 0.034 bar (0.25 - 0.50 psi) l Higher range is available with use of auxiliary spring

Open the catalog to page 1

Crankcase Pressure Sensing Valve - Model 4126 Specification Body material Cast aluminum Internal parts Plated steel and stainless steel Valve seals Diaphragm material Maximum sensed pressure (proof) Maximum valve pressure (port A) Shipped weight (appx.) Standard range With auxiliary spring Pressure ranges Auxiliary spring is furnished loose with each unit Installation factors The Pressure Sensing Port has a 2.54cm (1in.) female pipe tap. It is suggested that the unit be supported by means of a 2.54cm (1in.) pipe nipple from the engine crankcase door or frame. Install with the drain hole down...

Open the catalog to page 2

Crankcase Pressure Sensing Valve - Model 4126 Service kits 31 6 5 Body assembly Diaphragm cover Main spring Diaphragm cover Diaphragm plate Adjustment spring guild Return spring Machine screw Drive screw Thread seal Machine screw Machine screw Washer (special) Retaining ring Spring housing Pressure range Light - installed, Heavy - shipped loose

Open the catalog to page 3

AMOT USA 8824 Fallbrook Dr Houston TX 77064 USA AMOT Western Way Bury St Edmunds Suffolk, IP33 3SZ United Kingdom Asia and Australasia AMOT Shanghai Rm 4102 - 4104 United Plaza 1468 Nanjing Road West Shanghai 200040 China Tel +86 (0) 21 6279 7700 Fax +86 (0) 21 5237 8560 Email [email protected] AMOT Singapore 10 Eunos Road 8 #12-06 Singapore Post Centre Singapore 408600 Tel +65 6408 6265 Fax +65 6293 3307 Email [email protected]

Open the catalog to page 4

4126 Crankcase Pressure Sensing Valve

4126 Crankcase Pressure Sensing Valve

Catalog excerpts

All AMOT catalogs and technical brochures