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What are the replacement part numbers for old IR400/IR401/IR402/IR412 series precision regulators?

For the IR400-02/03/04□□: IR3000-02/03/04□□-A
For the IR401-02/03/04□□: IR3010-02/03/04□□-A
For the IR402-02/03/04□□: IR3020-02/03/04□□-A
For the IR412-02/03/04□□: IR3120-02/03/04□□ (IR-A series air operated regulators will be available at a later date.)
Note) Select option “H” when panel mounting the product.

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://smccatalog.partbuilder.smcpneumatics.com/support/faq/en-jp/?ca_id=vacuum-regulators&fa_id=11160

ARP40K-N04G-1YZ

Size: 40, Backflow Function: K (Backflow Function), Thread: N (NPT), Port Size: 04 (1/2), Accessory: G (Round Pressure Gauge w/Limit Indicator), Specifications: 1Y (1 + Y), Pressure Unit: Z (Name plate & Pressure Gauge in Imperial Units: psi)

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/ARP40K-N04G-1YZ

ARP40K-N04H-Z

Size: 40, Backflow Function: K (Backflow Function), Thread: N (NPT), Port Size: 04 (1/2), Accessory: H (Set Nut for Panel Mount), Specifications: 0.005 to 0.4MPa Setting, Pressure Unit: Z (Name plate & Pressure Gauge in Imperial Units: psi)

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/ARP40K-N04H-Z

ARP40-N04H-1Z

Size: 40, Backflow Function: None, Thread: N (NPT), Port Size: 04 (1/2), Accessory: H (Set Nut for Panel Mount), Specifications: 1 (0.005 to 0.2 MPa Setting), Pressure Unit: Z (Name plate & Pressure Gauge in Imperial Units: psi)

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/ARP40-N04H-1Z

ARP40-N04E3-Z

Size: 40, Backflow Function: None, Thread: N (NPT), Port Size: 04 (1/2), Accessory: E3 (PNP Output, Electrical Entry: Wiring Bottom Entry), Specifications: 0.005 to 0.4MPa Setting, Pressure Unit: Z (Name plate & Pressure Gauge in Imperial Units: psi)

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/ARP40-N04E3-Z

ARP40-N04E-Z

Size: 40, Backflow Function: None, Thread: N (NPT), Port Size: 04 (1/2), Accessory: E (Square Embedded Pressure Gauge w/Limit Indicator), Specifications: 0.005 to 0.4MPa Setting, Pressure Unit: Z (Name plate & Pressure Gauge in Imperial Units: psi)

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/ARP40-N04E-Z

ARP40-N04H-3Z

Size: 40, Backflow Function: None, Thread: N (NPT), Port Size: 04 (1/2), Accessory: H (Set Nut for Panel Mount), Specifications: 3 (0.008 to 0.6 MPa Setting), Pressure Unit: Z (Name plate & Pressure Gauge in Imperial Units: psi)

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/ARP40-N04H-3Z

ARP40K-N04G-3YZ

Size: 40, Backflow Function: K (Backflow Function), Thread: N (NPT), Port Size: 04 (1/2), Accessory: G (Round Pressure Gauge w/Limit Indicator), Specifications: 3Y (3+Y), Pressure Unit: Z (Name plate & Pressure Gauge in Imperial Units: psi)

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/ARP40K-N04G-3YZ

56-PA5210-N04

Atex: 56- (ATEX category 3 - II 3GD), Body Size: 5 (1/2 Standard), Body Material: 2 (SCS14, Stainless Steel), Diaphragm Material: 1 [PTFE (Fluororesin)], Switching Type: 0 (Automatically Operated), Thread: N (NPT), Port Size: 04 [1/2 (15A)]

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/56-PA5210-N04

55-PA5213-N04

Atex: 55- (ATEX category 2 - II 2GDc), Body Size: 5 (1/2 Standard), Body Material: 2 (SCS14, Stainless Steel), Diaphragm Material: 1 [PTFE (Fluororesin)], Switching Type: 3 (Air Operated), Thread: N (NPT), Port Size: 04 [1/2 (15A)]

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/55-PA5213-N04

IS10T-40-N04-L-D

Style: Pressure Switch w/ T-Spacer, Body Size: 40 (AC40), Thread Type: N (NPT), Port Size: 04 (1/2), Set Pressure Range: 0.1 to 0.4 MPa, Lead Wire Length: L (3m), Pressure Unit of the Scale Plate: MPa

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/IS10T-40-N04-L-D

IS10T-40-N04-Z-D

Style: Pressure Switch w/ T-Spacer, Body Size: 40 (AC40), Thread Type: N (NPT), Port Size: 04 (1/2), Set Pressure Range: 0.1 to 0.4 MPa, Lead Wire Length: Z (5m), Pressure Unit of the Scale Plate: MPa

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/IS10T-40-N04-Z-D

IS10T-40-N04-6-D

Style: Pressure Switch w/ T-Spacer, Body Size: 40 (AC40), Thread Type: N (NPT), Port Size: 04 (1/2), Set Pressure Range: 6 (0.1 to 0.6 MPa), Lead Wire Length: 0.5m, Pressure Unit of the Scale Plate: MPa

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/IS10T-40-N04-6-D

Y44M-N04E-Z-D

Body Size: 44 (AC40), Thread Type: N (NPT), Port Size: 04 (1/2), Pressure Gauge: E (Square Embedded Type Pressure Gauge, w/Limit Indicator), Mounting Direction: Front to Back Mounting, Unit: Z (Pressure Gauge: MPa/psi Dual Scale)

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/Y44M-N04E-Z-D

JSXZ41-CF04N-5WN

Size: 4 (40), Body Material: C (Brass), Seal Material: F (FKM), Port Size: 04 (1/2), Thread Type: N (NPT), Rated Voltage: 5 (24 VDC), Electrical Entry: WN (M12 Connector w/o Connector Cable, w/Surge Voltage Suppressor)

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/JSXZ41-CF04N-5WN

JSXZ41-CF04N-3DN

Size: 4 (40), Body Material: C (Brass), Seal Material: F (FKM), Port Size: 04 (1/2), Thread Type: N (NPT), Rated Voltage: 3 [120 (110) VAC], Electrical Entry: DN (DIN Terminal w/o Connector, w/Surge Voltage Suppressor)

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/JSXZ41-CF04N-3DN

JSXZ41-CE04N-5WN

Size: 4 (40), Body Material: C (Brass), Seal Material: E (EPDM), Port Size: 04 (1/2), Thread Type: N (NPT), Rated Voltage: 5 (24 VDC), Electrical Entry: WN (M12 Connector w/o Connector Cable, w/Surge Voltage Suppressor)

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/JSXZ41-CE04N-5WN

JSXZ41-SE04N-3DZ

Size: 4 (40), Body Material: S (Stainless Steel), Seal Material: E (EPDM), Port Size: 04 (1/2), Thread Type: N (NPT), Rated Voltage: 3 [120 (110) VAC], Electrical Entry: DZ (DIN Terminal w/Light, w/Surge Voltage Suppressor)

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/JSXZ41-SE04N-3DZ

JSXZ41-SF04N-5DN

Size: 4 (40), Body Material: S (Stainless Steel), Seal Material: F (FKM), Port Size: 04 (1/2), Thread Type: N (NPT), Rated Voltage: 5 (24 VDC), Electrical Entry: DN (DIN Terminal w/o Connector, w/Surge Voltage Suppressor)

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/JSXZ41-SF04N-5DN

JSXZ41-CN04F-5WN

Size: 4 (40), Body Material: C (Brass), Seal Material: N (NBR), Port Size: 04 (1/2), Thread Type: F (G), Rated Voltage: 5 (24 VDC), Electrical Entry: WN (M12 Connector w/o Connector Cable, w/Surge Voltage Suppressor)

https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://partbuilder.smcpneumatics.com/product-search-results/JSXZ41-CN04F-5WN