PH3 MK I Valve Only

Overview

Pacbrake's PH3 PowerHalt Air Intake Emergency Shut-Off Valves provide a reliable and safe method of shutting down the engine. PowerHalt's PH3 offers one of the safest control options on the market - providing a hands-free operation with an automatic reset function as well as various control options.

PLEASE NOTE:
PH3 PowerHalt Shut-Off Valve Custom Kits must be ordered in conjunction with:
Valve + Control Option + Mounting Group

View our PowerHalt Selection Guide for more information

Product Description

Pacbrake's PH3 MK I PowerHalt Valves are an electronically controlled emergency engine shut down system which forces engine shut down by blocking an engine’s air intake path.

It is available in an automatic engine speed sensing model where shutdown occurs if engine speed exceeds a trip speed (or by manual override).

Alternatively, a manual activation-only configuration is available where an operator (or external input) will activate emergency engine shut-down.

The valves electronically return to open position after emergency engine shutdown, all while providing feedback to the operator that the valve is held closed via illuminated toggle switch or panel indicator light.

PH3 MK I Highlights

12 & 24 VDC system compatible
Reliable and safe emergency shut down for diesel engines
Operator friendly fully automatic operation with manual override
Enclosed drive system is debris and corrosion resistant
Aluminum flap and housing for durable seal
IP 66 rated valve motor
Supports multiple trip input sources
Auxiliary trip inputs available (PowerGuard Automatic and Manual)
Compatible with hall effect and VR sensors (PowerGuard Automatic)
Secondary pre-set speed for Power Take Off (PTO) applications (PowerGuard Automatic)
Low power consumption with smart control
High temperature design for challenging thermal applications
Corrosion tested to ASTM B117 – 96 hours Salt Fog
Rated for 18.6𝐺𝑅𝑀𝑆 vibration (7.7𝐺𝑅𝑀𝑆 for 5” bore)

Vehicle Application

Universal

Application Notes

PH3 MK I Valve Only
Custom kits must be ordered in conjunction with:
Valve + Control Option + Mounting Group

Features

1.75" to 4.0" Valve Sizes Available

Multiple Activation Options

A Complete Installation — All in One Box
Maintenance Free, Smart System
Electronic Reset for In-Cab Control/Comfort when Testing the Valve — No more lifting the hood to manually reset!
Compact & Lightweight
Low Power Consumption
Designed to withstand large temperature ranges
Rigorous Vibration, Corrosion & Endurance Testing
CSA B621-14 and B622-14 compliance available

MANUALS, GUIDES & DOWNLOADS

PH3 MKI Valves — Data Sheet

Auto Activation with Auto Reset Kits
Auto Activation with Manual Reset Kits

Manual Activation with Auto Reset Kits

Installation Manual

PH3 MK I POWERHALT SHUT-OFF VALVES
SPECIFICATIONS
Mamimum Intake Boost Air Pressure*	50 psi [3.45 bar]
Continuous Intake Air Temperature	-70°F to 350°F [-56°C to +175°C]
Ambient Temperature Range	-40°F to 248°F [-40°C to +120°C]
Resting Position	Valve Open
Activated Position	Valve Closed
Standard Mounting Flanges	Hose to Hose
Pipe Size Supported	Ø 1.75" to Ø 4.5" [Ø 44.5 mm to Ø 114 mm]

PH3 MK I POWERHALT SHUT-OFF VALVE — VALVE SIZE OPTIONS
	C50087 — 1.75"	C50088 — 2.0"
	A: 1.75" [45mm] B: 1.40" [36mm] C: 5.87" [149mm] Weight: 1.7lb [0.75kg]	A: 2.00" [51mm] B: 1.65" [42mm] C: 5.87" [149mm] Weight: 1.6lb [0.73 kg]
	C50089 — 2.25"	C50097 — 2.5"
	A: 2.25" [57mm] B: 1.89" [48mm] C: 5.87" [149mm] Weight: 1.56lb [0.71kg]	A: 2.50" [64mm] B: 2.17" [55mm] C: 6.69" [170mm] Weight: 2.0lb [0.90 kg]
	C50096 — 2.75"	C50090 — 3.0"
	A: 2.75" [70mm] B: 2.40" [61mm] C: 6.69" [170mm] Weight: 1.9lb [0.87kg]	A: 3.00" [76mm] B: 2.64" [67mm] C: 6.69" [170mm] Weight: 1.8lb [0.84kg]
	C50098 — 3.5"	C50086 — 4.0"
	A: 3.50" [89mm] B: 3.15" [80mm] C: 7.87" [200mm] Weight: 2.4lb [1.1kg]	A: 4.00" [102mm] B: 3.66" [93mm] C: 7.87" [200mm] Weight: 2.2lb [1.0kg]

APPLICATIONS
Bulk Haulers	Tankers	Power Generators	Drilling Rigs	Grain Processing Plants
Cranes	Forklifts	Work Boats	Refinery Processing	Light Duty Trucks
Underground Equipment	Barges	Fueling Vehicles	Tow Vehicles	Support Vehicles
Welders	Pump Trucks	Fire Trucks	Vacuum Trucks	Lighting Trucks