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HWC437D-1013 Honeywell (C437D1013) Gas Pressure Limit Switch 1/2 to 5 PSI

SKU: HWC437D-1013
RETAIL: 199.10
BASE PRICE: 181.00

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Product #: C437D1013
Product Name: Honeywell Gas Pressure Limit Switch
Description: Pressure or differential - pressure limit controls for industrial gas systems. SPST mercury switch, opens circuit on pressure rise manual reset. 1/2 to 5 PSI. Maximum sustained operating pressure 15.0 PSI

Use C437 for spst switching or C637 for spdt switching. Compensate for momentary surges in gas pressure with a restrictive orifice in inlet pressure channel on the models with pressure range of 1/2 to 5 psi. Resume operation by manually resetting when using lockout application models. Impede tampering and provide dust-resistant operation with enclosed setting. Increase strength of control diaphragm with Buna-N fiber-reinforced material. Clear glass cover allows observation of interior mechanism to aid in setting and checkout. Mercury switch provides visual indication of switch position.

Underwriters Laboratories Inc. Listed: File No. MP2168, Guide No. MFHX.
Canadian Standards Association Certified: File No. LR1620, Guide No. 380-W-1.16.
Factory Mutual Approved: Report Nos.22018,24127, J.I.IF4A3.AF.
Industrial Risk Insurers Acceptable.

32 F to 125 F (0 C to 52 C).

1/2 in. NPT female for main or high pressure.
1/8 in. NPT female for vent or low pressure.

106729 Cover Glass, 6 in. (152.5 mm) diameter.
106747 Cover Retaining Ring for C437 and C637 models manufactured before 1973.
118733-00021 Retaining Clip for C437 and C637 models manufactured since 1975.
139870A Cover Glass for rainproof enclosures.

122160 Orifice - 0.018 in. (0.46 mm) diameter.
124674 Orifice - 0.011 in. (0.28 mm) diameter.
4074BWK Mounting Brackets, for surface mounting.

Differential at midscale. Subtractive for C437D, J, G. Additive for C437E, F, H, K and C637B.

Package Type: Each
Units Per Package: 1
Product Details:


Safety Shutoff, Pressure or differential - pressure limit controls for industrial gas systems.
Pressure Range: 1/2 to 5 psi (3.0 to 35 kPa)
Differential: 1/2 psi
Pressure Surge, Maximum: 15.0 psi, 103.4 kPa
Max Sustained Operating Pressure   15.0 PSI (103.4 kPa)
Switch, Mercury: SpST, Breaks on Rise
Switch Action (Breaks): Rise
Reset, Manual (Lockout On Switch Break): Yes, Manual Reset
Minimum Order Quantity: 1
Trade Name: Honeywell
Switch Contact Rating (120 Vac)   8.0 AFL, 48.0 ALR, 10.0 resistive
Switch Contact Rating (120 Vdc)   2.4 AFL, 24.0 ALR, 5.0 resistive
Switch Contact Rating (240 Vac)   5.1 AFL, 30.6 ALR, 5.0 resistive
Switch Contact Rating (240 Vdc)   1.2 AFL, 12.0 ALR, 2.0 resistive
Trade Name Type: Registered Trademark
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